claim string | dimensions dict | evidence unknown | fixes list | id string | kind string | provenance dict | service string | signal unknown | status string | target dict | url string |
|---|---|---|---|---|---|---|---|---|---|---|---|
Anonymous GET /repos/{owner}/{repo} responses are shared-cacheable for 60 s (public, s-maxage=60) and Vary does not list X-GitHub-Api-Version, so by HTTP caching rules a cache may serve a body of another API version. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 54,
"first_seen": "2026-10-20T09:01:23+00:00",
"last_confirmed": "2026-10-30T22:16:19+00:00",
"probe": "af:github:probe:repo-cache-headers",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "cb",
"value_source": "new_uuid_per_request"
},
{
"action": "request_scope",
"scope": "public_repo"
}
] | af:github:anonymous-cache-ignores-api-version | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/anonymous-cache-ignores-api-version |
Anonymous REST requests count against the core resource with x-ratelimit-limit 60 per hour, shared by every client behind the same originating IP address. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 56,
"first_seen": "2026-10-20T09:01:22+00:00",
"last_confirmed": "2026-10-31T01:00:19+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api#primary-rate-limit-for-unauthenticated-users",
"probe": "af:github:probe:repo-anonymous",
"stale_c... | [
{
"action": "request_scope",
"scope": "public_repo"
}
] | af:github:anonymous-core-rate-limit | rate_limit | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/anonymous-core-rate-limit |
An anonymous GET /repos/{owner}/{repo} returns the repository object without a permissions field. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 56,
"first_seen": "2026-10-20T09:01:22+00:00",
"last_confirmed": "2026-10-31T01:00:19+00:00",
"probe": "af:github:probe:repo-anonymous",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "request_scope",
"scope": "public_repo"
}
] | af:github:anonymous-repo-has-no-permissions | auth_quirk | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/anonymous-repo-has-no-permissions |
Anonymous calls to the search endpoints count against a separate search resource with x-ratelimit-limit 10 (documented as 10 requests per minute), not against core. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 172,
"first_seen": "2026-10-20T09:01:24+00:00",
"last_confirmed": "2026-10-31T01:46:23+00:00",
"official_url": "https://docs.github.com/en/rest/search/search#rate-limit",
"probe": "af:github:probe:search-query-too-long",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
... | [
{
"action": "backoff_exponential",
"base_ms": 6000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 60000
}
] | af:github:anonymous-search-rate-limit | rate_limit | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/search/repositories",
"surface": "http"
} | https://apifacts.dev/github/anonymous-search-rate-limit |
With X-GitHub-Api-Version 2026-03-10, GET /repos/{owner}/{repo} no longer returns has_downloads, which the default version 2022-11-28 still includes. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 55,
"first_seen": "2026-10-20T09:01:22+00:00",
"last_confirmed": "2026-10-31T01:46:19+00:00",
"official_url": "https://docs.github.com/en/rest/about-the-rest-api/breaking-changes",
"probe": "af:github:probe:repo-api-version-2026",
"stale_counter": 0,
"vantages": [
"mac-dev",
"il... | [
{
"action": "set_header",
"name": "X-GitHub-Api-Version",
"value_source": "literal:2022-11-28"
}
] | af:github:api-version-2026-drops-has-downloads | breaking_change | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/api-version-2026-drops-has-downloads |
Requests without X-GitHub-Api-Version use version 2022-11-28, supported until 2028-03-10; after that, unversioned requests move to the next oldest supported version. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/about-the-rest-api/api-versions#supported-api-versions"
} | [
{
"action": "set_header",
"name": "X-GitHub-Api-Version",
"value_source": "literal:2026-03-10"
}
] | af:github:default-api-version-end-of-support | deprecation | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | null | official | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/default-api-version-end-of-support |
REST error bodies carry a status field holding the HTTP code as a JSON string, such as "404", not as a number. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 55,
"first_seen": "2026-10-20T09:01:23+00:00",
"last_confirmed": "2026-10-30T23:01:03+00:00",
"probe": "af:github:probe:repo-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:github:error-status-is-a-string | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/error-status-is-a-string |
For anonymous callers GET /rate_limit reports a graphql resource limit of 0, so the GraphQL API has no anonymous quota, while REST core allows 60 requests per hour. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 363,
"first_seen": "2026-10-20T09:01:22+00:00",
"last_confirmed": "2026-10-31T01:46:24+00:00",
"official_url": "https://docs.github.com/en/rest/rate-limit/rate-limit",
"probe": "af:github:probe:rate-limit",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "request_scope",
"scope": "public_repo"
}
] | af:github:graphql-anonymous-limit-zero | auth_quirk | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/rate_limit",
"surface": "http"
} | https://apifacts.dev/github/graphql-anonymous-limit-zero |
An anonymous GET /repos/{owner}/{repo} for a repository that does not exist returns HTTP 404 with message Not Found. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 55,
"first_seen": "2026-10-20T09:01:23+00:00",
"last_confirmed": "2026-10-30T23:01:03+00:00",
"probe": "af:github:probe:repo-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:github:missing-repo-404 | error_meaning | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"error_string": "Not Found",
"normalized": "not found",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/missing-repo-404 |
List endpoints such as GET /users/{username}/followers return a bare JSON array and give the next and last page URLs only in the Link header (rel="next", rel="last"). | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 363,
"first_seen": "2026-10-20T09:01:21+00:00",
"last_confirmed": "2026-10-31T01:46:24+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/using-pagination-in-the-rest-api#using-link-headers",
"probe": "af:github:probe:followers-per-page-cap",
"stale_counter": 0,
... | [
{
"action": "paginate_with",
"cursor_field": "link",
"page_size_max": 100,
"param_name": "page"
}
] | af:github:pagination-in-link-header | pagination | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/users/{username}/followers",
"surface": "http"
} | https://apifacts.dev/github/pagination-in-link-header |
A per_page above 100 on GET /users/{username}/followers is silently reduced to 100: HTTP 200 with 100 items, no error, and Link URLs that repeat the requested per_page. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 363,
"first_seen": "2026-10-20T09:01:21+00:00",
"last_confirmed": "2026-10-31T01:46:24+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/using-pagination-in-the-rest-api#changing-the-number-of-items-per-page",
"probe": "af:github:probe:followers-per-page-cap",
"s... | [
{
"action": "paginate_with",
"cursor_field": "link",
"page_size_max": 100,
"param_name": "page"
}
] | af:github:per-page-silently-capped-at-100 | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/users/{username}/followers",
"surface": "http"
} | https://apifacts.dev/github/per-page-silently-capped-at-100 |
A request for a private resource without proper authentication returns 404 Not Found, not 403 Forbidden, so that the existence of private repositories is not confirmed. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/troubleshooting-the-rest-api#404-not-found-for-an-existing-resource"
} | [
{
"action": "request_scope",
"scope": "repo"
}
] | af:github:private-repo-404-not-403 | auth_quirk | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | {
"error_string": "Not Found",
"normalized": "not found",
"status": 404
} | official | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/private-repo-404-not-403 |
The rate object of GET /rate_limit is closing down; the resources.core object carries the same information. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/rate-limit/rate-limit"
} | [
{
"action": "set_header",
"name": "X-GitHub-Api-Version",
"value_source": "literal:2022-11-28"
}
] | af:github:rate-object-closing-down | deprecation | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | null | official | {
"method": "GET",
"path_template": "/rate_limit",
"surface": "http"
} | https://apifacts.dev/github/rate-object-closing-down |
GET /repos/{owner}/{repo} on a renamed or transferred repository returns HTTP 301 Moved Permanently with Location /repositories/{id} instead of the repository object. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 55,
"first_seen": "2026-10-20T09:01:23+00:00",
"last_confirmed": "2026-10-30T23:31:19+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/best-practices-for-using-the-rest-api#follow-redirects",
"probe": "af:github:probe:repo-renamed",
"stale_counter": 0,
"vantag... | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/repositories/{id}"
}
] | af:github:renamed-repo-301 | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"error_string": "Moved Permanently",
"normalized": "moved permanently",
"status": 301
} | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/renamed-repo-301 |
On 2026-10-20 the repository object of GET /repos/{owner}/{repo} at API version 2022-11-28 had 84 top-level keys, schema fingerprint 4ca5975282230619. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 54,
"first_seen": "2026-10-20T09:01:23+00:00",
"last_confirmed": "2026-10-31T00:16:19+00:00",
"probe": "af:github:probe:repo-schema-fingerprint",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_header",
"name": "X-GitHub-Api-Version",
"value_source": "literal:2022-11-28"
}
] | af:github:repository-object-fingerprint | schema_drift | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | null | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/repository-object-fingerprint |
Search returns at most 1,000 results per query: a page past them (per_page 100, page 11) returns HTTP 422 Only the first 1000 search results are available. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 169,
"first_seen": "2026-10-20T09:01:23+00:00",
"last_confirmed": "2026-10-31T01:00:21+00:00",
"official_url": "https://docs.github.com/en/rest/search/search#about-search",
"probe": "af:github:probe:search-beyond-1000",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
... | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:github:search-first-1000-results | pagination | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"error_string": "Only the first 1000 search results are available",
"normalized": "only the first #### search results are available",
"status": 422
} | verified:server:prod | {
"method": "GET",
"path_template": "/search/repositories",
"surface": "http"
} | https://apifacts.dev/github/search-first-1000-results |
A search q parameter longer than 256 characters returns HTTP 422 Validation Failed with errors[0] code invalid, field q and message The search is longer than 256 characters. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 172,
"first_seen": "2026-10-20T09:01:24+00:00",
"last_confirmed": "2026-10-31T01:46:23+00:00",
"probe": "af:github:probe:search-query-too-long",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "reduce_payload",
"field": "q",
"max_bytes": 256
}
] | af:github:search-query-longer-than-256 | error_meaning | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"error_code": "invalid",
"error_string": "The search is longer than 256 characters.",
"normalized": "the search is longer than ### characters.",
"status": 422
} | verified:server:prod | {
"method": "GET",
"path_template": "/search/repositories",
"surface": "http"
} | https://apifacts.dev/github/search-query-longer-than-256 |
Exceeding a secondary rate limit returns HTTP 403 or 429 with a message saying so; retry-after, when present, gives the seconds to wait, otherwise the wait is at least one minute. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api#exceeding-the-rate-limit"
} | [
{
"action": "retry_after_header",
"max_attempts": 3,
"unit": "s"
},
{
"action": "backoff_exponential",
"base_ms": 60000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 960000
}
] | af:github:secondary-rate-limit-429 | rate_limit | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | {
"status": 429
} | official | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/secondary-rate-limit-429 |
Exceeding a secondary rate limit returns HTTP 403 or 429 with a message saying so; retry-after, when present, gives the seconds to wait, otherwise the wait is at least one minute. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/rate-limits-for-the-rest-api#exceeding-the-rate-limit"
} | [
{
"action": "retry_after_header",
"max_attempts": 3,
"unit": "s"
},
{
"action": "backoff_exponential",
"base_ms": 60000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 960000
}
] | af:github:secondary-rate-limit | rate_limit | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | {
"status": 403
} | official | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/secondary-rate-limit |
A REST path with a trailing slash, such as /rate_limit/, returns HTTP 404 with the plain-text body 404 Not Found instead of the endpoint's JSON. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 363,
"first_seen": "2026-10-20T09:01:24+00:00",
"last_confirmed": "2026-10-31T01:46:24+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/troubleshooting-the-rest-api#404-not-found-for-an-existing-resource",
"probe": "af:github:probe:trailing-slash",
"stale_counte... | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/rate_limit"
}
] | af:github:trailing-slash-404 | error_meaning | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"error_string": "404 Not Found",
"normalized": "### not found",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/rate_limit/",
"surface": "http"
} | https://apifacts.dev/github/trailing-slash-404 |
An X-GitHub-Api-Version that is not a supported version, such as 2021-01-01, returns HTTP 400 Bad Request whose errors field is a string naming the supported versions. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 55,
"first_seen": "2026-10-20T09:01:22+00:00",
"last_confirmed": "2026-10-30T21:31:20+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/troubleshooting-the-rest-api#not-a-supported-version",
"probe": "af:github:probe:repo-api-version-unsupported",
"stale_counter"... | [
{
"action": "set_header",
"name": "X-GitHub-Api-Version",
"value_source": "literal:2026-03-10"
}
] | af:github:unsupported-api-version-400 | error_meaning | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | github | {
"error_string": "The version you specified in the \"X-GitHub-API-Version\" request header, \"2021-01-01\", is not a supported version. The following versions are currently supported: \"2026-03-10\" (most recent) and \"2022-11-28\".",
"normalized": "the version you specified in the \"x-github-api-version\" request... | verified:server:prod | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/unsupported-api-version-400 |
A request with an HTTP method the endpoint does not support, such as DELETE on a GET-only endpoint, returns HTTP 404 Not Found instead of 405 Method Not Allowed. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/troubleshooting-the-rest-api#404-not-found-for-an-existing-resource"
} | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/rate_limit"
}
] | af:github:unsupported-method-404 | error_meaning | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | {
"status": 404
} | official | {
"method": "DELETE",
"path_template": "/rate_limit",
"surface": "http"
} | https://apifacts.dev/github/unsupported-method-404 |
REST API requests without a User-Agent header are rejected, and a request with an invalid User-Agent header receives HTTP 403 Forbidden. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T08:50:00+00:00",
"official_url": "https://docs.github.com/en/rest/using-the-rest-api/getting-started-with-the-rest-api#user-agent"
} | [
{
"action": "set_header",
"name": "User-Agent",
"value_source": "account_setting:github_username"
}
] | af:github:user-agent-required | auth_quirk | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | github | {
"status": 403
} | official | {
"method": "GET",
"path_template": "/repos/{owner}/{repo}",
"surface": "http"
} | https://apifacts.dev/github/user-agent-required |
The API key that lists a public calendar's events gets HTTP 401 UNAUTHENTICATED ("API keys are not supported by this API") on calendars.get and users/me/calendarList. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 637,
"first_seen": "2026-10-24T08:41:03+00:00",
"last_confirmed": "2026-10-31T01:46:25+00:00",
"probe": "af:google-calendar:probe:calendar-get-needs-oauth",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "request_scope",
"scope": "https://www.googleapis.com/auth/calendar.readonly"
}
] | af:google-calendar:calendar-get-rejects-api-keys | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_code": "UNAUTHENTICATED",
"error_string": "API keys are not supported by this API. Expected OAuth2 access token or other authentication credentials that assert a principal. See https://cloud.google.com/docs/authentication",
"normalized": "api keys are not supported by this api. expected oauth# access tok... | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}",
"surface": "http"
} | https://apifacts.dev/google-calendar/calendar-get-rejects-api-keys |
events.list on a calendar id that does not exist returns HTTP 404 "Not Found" with error.errors[0].reason notFound and no error.status. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"probe": "af:google-calendar:probe:calendar-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-calendar:calendar-not-found-404 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Not Found",
"normalized": "not found",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/calendar-not-found-404 |
events.list returns at most 250 events per page by default and never more than 2500; further pages need pageToken. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://developers.google.com/workspace/calendar/api/v3/reference/events/list"
} | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 2500,
"param_name": "pageToken"
}
] | af:google-calendar:events-page-default-250 | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-calendar | null | official | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/events-page-default-250 |
A pageToken the API did not issue returns HTTP 400 "Invalid page token value.". | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T01:46:21+00:00",
"probe": "af:google-calendar:probe:invalid-page-token",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 2500,
"param_name": "pageToken"
}
] | af:google-calendar:invalid-page-token-400 | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Invalid page token value.",
"normalized": "invalid page token value.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/invalid-page-token-400 |
maxResults=5000, above the documented page maximum of 2500, is accepted with HTTP 200 rather than refused (the error message for 0 even gives the range as [1, ∞)). | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T00:01:21+00:00",
"official_url": "https://developers.google.com/workspace/calendar/api/v3/reference/events/list",
"probe": "af:google-calendar:probe:max-results-bounds",
"stale_counter": 0,
"vantages": [
"m... | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 2500,
"param_name": "pageToken"
}
] | af:google-calendar:max-results-above-2500-accepted | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/max-results-above-2500-accepted |
maxResults=0 returns HTTP 400 "Invalid value '0'. Values must be within the range: [1, ∞)" (reason invalidParameter). | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T00:01:21+00:00",
"probe": "af:google-calendar:probe:max-results-bounds",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "maxResults",
"value_source": "literal:250"
}
] | af:google-calendar:max-results-zero-refused | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Invalid value '0'. Values must be within the range: [1, ∞)",
"normalized": "invalid value '#'. values must be within the range: [#, ∞)",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/max-results-zero-refused |
events.list on a public calendar with no API key or token returns HTTP 403 ("Method doesn't allow unregistered callers"). | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T00:16:21+00:00",
"probe": "af:google-calendar:probe:no-api-key",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "key",
"value_source": "account_setting:api_key"
}
] | af:google-calendar:missing-api-key-403 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Method doesn't allow unregistered callers (callers without established identity). Please use API Key or other form of API consumer identity to call this API.",
"normalized": "method doesn't allow unregistered callers (callers without established identity). please use api key or other form of api ... | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/missing-api-key-403 |
orderBy=startTime without singleEvents=true returns HTTP 400 "The requested ordering is not available for the particular query."; with singleEvents=true it succeeds. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T00:31:20+00:00",
"probe": "af:google-calendar:probe:order-by-start-time",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "singleEvents",
"value_source": "literal:true"
}
] | af:google-calendar:order-by-start-time-needs-single-events | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "The requested ordering is not available for the particular query.",
"normalized": "the requested ordering is not available for the particular query.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/order-by-start-time-needs-single-events |
events.list with only an API key works on a calendar shared publicly as free/busy: HTTP 200 with accessRole freeBusyReader, items and a nextSyncToken. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T01:30:20+00:00",
"probe": "af:google-calendar:probe:events-free-busy-reader",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-calendar:public-free-busy-calendar-via-api-key | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/public-free-busy-calendar-via-api-key |
Rate limiting shows up as HTTP 403 with reason rateLimitExceeded or userRateLimitExceeded (domain usageLimits) or as HTTP 429 rateLimitExceeded; a 403 is not always a permission problem. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://developers.google.com/workspace/calendar/api/guides/errors"
} | [
{
"action": "backoff_exponential",
"base_ms": 1000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 64000
}
] | af:google-calendar:rate-limit-403-or-429 | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-calendar | {
"status": 403
} | official | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/rate-limit-403-or-429 |
A syncToken combined with timeMin returns HTTP 400 "Sync token cannot be used with other request restrictions.". | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T00:46:20+00:00",
"probe": "af:google-calendar:probe:sync-token-errors",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "remove_param",
"location": "query",
"name": "timeMin"
}
] | af:google-calendar:sync-token-with-time-min-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Sync token cannot be used with other request restrictions.",
"normalized": "sync token cannot be used with other request restrictions.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/sync-token-with-time-min-400 |
timeMin is an exclusive lower bound on an event's end time, not its start time; timeMax is an exclusive upper bound on the start time. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://developers.google.com/workspace/calendar/api/v3/reference/events/list"
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-calendar:time-min-filters-on-end-time | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-calendar | null | official | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/time-min-filters-on-end-time |
timeMin as a date (2026-10-24) or a time without offset (2026-10-24T00:00:00) returns HTTP 400 with only "Bad Request" (reason badRequest); a timestamp with Z is accepted. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T01:00:20+00:00",
"official_url": "https://developers.google.com/workspace/calendar/api/v3/reference/events/list",
"probe": "af:google-calendar:probe:time-min-needs-offset",
"stale_counter": 0,
"vantages": [
... | [
{
"action": "encode_as",
"encoding": "rfc3339",
"field": "timeMin"
}
] | af:google-calendar:time-min-without-offset-bad-request | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Bad Request",
"normalized": "bad request",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/time-min-without-offset-bad-request |
A syncToken the server does not know, even a made-up string, returns HTTP 410 Gone (reason fullSyncRequired), not 400. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:41:04+00:00",
"last_confirmed": "2026-10-31T00:46:20+00:00",
"probe": "af:google-calendar:probe:sync-token-errors",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "remove_param",
"location": "query",
"name": "syncToken"
}
] | af:google-calendar:unknown-sync-token-410 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-calendar | {
"error_string": "Sync token is no longer valid, a full sync is required.",
"normalized": "sync token is no longer valid, a full sync is required.",
"status": 410
} | verified:server:prod | {
"method": "GET",
"path_template": "/calendar/v3/calendars/{calendar_id}/events",
"surface": "http"
} | https://apifacts.dev/google-calendar/unknown-sync-token-410 |
Arrays and maps are wrapped twice: an array is arrayValue.values[] of typed values (stringValue: "a"), a map is mapValue.fields.<key> holding a typed value. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 107,
"first_seen": "2026-10-24T09:44:52+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"probe": "af:google-firestore:probe:typed-document",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:array-and-map-values-are-wrapped | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/array-and-map-values-are-wrapped |
A REST document has exactly four top-level keys: name (the full resource path), fields, createTime and updateTime. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 107,
"first_seen": "2026-10-24T09:44:52+00:00",
"last_confirmed": "2026-10-31T01:00:20+00:00",
"probe": "af:google-firestore:probe:document-schema-fingerprint",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:document-envelope-keys | schema_drift | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/document-envelope-keys |
Getting a document that does not exist returns HTTP 404 NOT_FOUND with the full document name in the message (Document "projects/…/documents/<path>" not found.). | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 109,
"first_seen": "2026-10-24T08:46:01+00:00",
"last_confirmed": "2026-10-31T00:46:22+00:00",
"probe": "af:google-firestore:probe:document-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:document-not-found-404 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "NOT_FOUND",
"error_string": "Document \"projects/agent-facts-probes/databases/(default)/documents/agent_facts/nosuch\" not found.",
"normalized": "document \"projects/agent-facts-probes/databases/(default)/documents/agent_facts/nosuch\" not found.",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/document-not-found-404 |
A document is at most 1 MiB (1,048,576 bytes), an API request at most 10 MiB, and subcollections nest at most 100 levels deep. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://firebase.google.com/docs/firestore/quotas"
} | [
{
"action": "reduce_payload",
"field": "fields",
"max_bytes": 1048576
}
] | af:google-firestore:document-size-limit-1mib | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-firestore | null | official | {
"method": "PATCH",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/document-size-limit-1mib |
Listing a collection that has no documents returns HTTP 200 with an empty object {}: no documents field (not documents: []) and no nextPageToken. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 180,
"first_seen": "2026-10-24T08:46:01+00:00",
"last_confirmed": "2026-10-31T01:46:23+00:00",
"probe": "af:google-firestore:probe:empty-collection-empty-object",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:empty-collection-returns-empty-object | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}",
"surface": "http"
} | https://apifacts.dev/google-firestore/empty-collection-returns-empty-object |
The free quota is 50,000 document reads and 20,000 writes and 20,000 deletes per day, reset around midnight Pacific time. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://firebase.google.com/docs/firestore/quotas"
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:free-quota-resets-midnight-pacific | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-firestore | null | official | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/free-quota-resets-midnight-pacific |
In REST documents an integer field comes back as a JSON string (integerValue: "42", int64 format), while a double is a JSON number (doubleValue: 3.5). | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 107,
"first_seen": "2026-10-24T09:44:52+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"official_url": "https://firebase.google.com/docs/firestore/reference/rest/v1/Value",
"probe": "af:google-firestore:probe:typed-document",
"stale_counter": 0,
"vantages": [
"mac-dev",
... | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:integer-value-is-a-string | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/integer-value-is-a-string |
A mask.fieldPaths entry with a space or other character outside [a-zA-Z_][a-zA-Z_0-9]* returns HTTP 400 "Invalid property path" unless the path is quoted in backticks. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 179,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:00:22+00:00",
"probe": "af:google-firestore:probe:list-parameter-errors",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:invalid-field-path-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Invalid property path \"a b\". Unquoted property paths must match regex ([a-zA-Z_][a-zA-Z_0-9]*), and quoted property paths must match regex (`(?:[^`\\\\]|(?:\\\\.))+`)",
"normalized": "invalid property path \"a b\". unquoted property paths must match regex ([a... | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}",
"surface": "http"
} | https://apifacts.dev/google-firestore/invalid-field-path-400 |
A pageToken the API did not issue returns HTTP 400 "invalid page token" (lowercase, no period). | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 179,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:00:22+00:00",
"probe": "af:google-firestore:probe:list-parameter-errors",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 300,
"param_name": "pageToken"
}
] | af:google-firestore:invalid-page-token-400 | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "INVALID_ARGUMENT",
"error_string": "invalid page token",
"normalized": "invalid page token",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}",
"surface": "http"
} | https://apifacts.dev/google-firestore/invalid-page-token-400 |
A negative pageSize returns HTTP 400 "Page size must be nonnegative.". | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 179,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:00:22+00:00",
"probe": "af:google-firestore:probe:list-parameter-errors",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "remove_param",
"location": "query",
"name": "pageSize"
}
] | af:google-firestore:negative-page-size-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Page size must be nonnegative.",
"normalized": "page size must be nonnegative.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}",
"surface": "http"
} | https://apifacts.dev/google-firestore/negative-page-size-400 |
A null field comes back as {nullValue: null}: the type key is present and its value is JSON null, so a field set to null is not the same as a missing field. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 107,
"first_seen": "2026-10-24T09:44:52+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"probe": "af:google-firestore:probe:typed-document",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:null-value-is-json-null | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/null-value-is-json-null |
orderBy on a field that no document has is accepted with HTTP 200 instead of being refused. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 179,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:16:24+00:00",
"probe": "af:google-firestore:probe:order-by-unknown-field",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:order-by-unknown-field-accepted | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}",
"surface": "http"
} | https://apifacts.dev/google-firestore/order-by-unknown-field-accepted |
Server client libraries bypass all Firestore security rules and authenticate with Application Default Credentials, so their access is decided by IAM, not by the rules. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://firebase.google.com/docs/firestore/security/get-started"
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:server-access-bypasses-security-rules | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-firestore | null | official | {
"method": "POST",
"path_template": "/v1/projects/{project}/databases/{database}/documents:runQuery",
"surface": "http"
} | https://apifacts.dev/google-firestore/server-access-bypasses-security-rules |
Listing a subcollection under a parent document that does not exist returns HTTP 200 {} rather than 404: the parent's absence is not reported. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 638,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:46:26+00:00",
"probe": "af:google-firestore:probe:subcollection-of-missing-document",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:subcollection-of-missing-document-is-empty | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}/{subcollection}",
"surface": "http"
} | https://apifacts.dev/google-firestore/subcollection-of-missing-document-is-empty |
A timestamp field comes back as timestampValue, an RFC 3339 string in UTC with a Z suffix ("2026-10-24T00:00:00Z"). | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 107,
"first_seen": "2026-10-24T09:44:52+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"probe": "af:google-firestore:probe:typed-document",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "encode_as",
"encoding": "rfc3339",
"field": "timestampValue"
}
] | af:google-firestore:timestamp-value-rfc3339-utc | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/timestamp-value-rfc3339-utc |
While a database runs on test-mode security rules, REST reads with no credentials at all are allowed: a missing document is 404 NOT_FOUND and a list is HTTP 200, rather than 401 or 403. | {
"account_state": "test_mode_rules",
"env": "prod"
} | {
"confirmations": 109,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:30:20+00:00",
"probe": "af:google-firestore:probe:unauthenticated-test-mode",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:unauthenticated-read-under-test-mode | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "NOT_FOUND",
"error_string": "Document \"projects/agent-facts-probes/databases/(default)/documents/agent_facts/nosuch\" not found.",
"normalized": "document \"projects/agent-facts-probes/databases/(default)/documents/agent_facts/nosuch\" not found.",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/unauthenticated-read-under-test-mode |
A database id the project does not have returns HTTP 404 NOT_FOUND "The database <id> does not exist for project <project>" with a console link to create one. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 109,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T01:46:21+00:00",
"probe": "af:google-firestore:probe:unknown-database",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:unknown-database-404 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "NOT_FOUND",
"error_string": "The database agentfacts-nosuch-db does not exist for project agent-facts-probes Please visit https://console.cloud.google.com/datastore/setup?project=agent-facts-probes to add a Cloud Datastore or Cloud Firestore database.",
"normalized": "the database agentfacts-nosu... | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/unknown-database-404 |
A project id that does not exist returns HTTP 403 PERMISSION_DENIED "Permission denied on resource project <id>.", the same status as missing IAM rights, not 404. | {
"account_state": "service_account",
"env": "prod"
} | {
"confirmations": 108,
"first_seen": "2026-10-24T08:46:02+00:00",
"last_confirmed": "2026-10-31T00:31:21+00:00",
"probe": "af:google-firestore:probe:unknown-project",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-firestore:unknown-project-403 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-firestore | {
"error_code": "PERMISSION_DENIED",
"error_string": "Permission denied on resource project agent-facts-nosuch-project-x.",
"normalized": "permission denied on resource project agent-facts-nosuch-project-x.",
"status": 403
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/projects/{project}/databases/{database}/documents/{collection}/{document}",
"surface": "http"
} | https://apifacts.dev/google-firestore/unknown-project-403 |
Requests-per-day quotas reset at midnight Pacific time, not at midnight UTC. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://ai.google.dev/gemini-api/docs/rate-limits"
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-gemini:daily-quota-resets-midnight-pacific | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-gemini | null | official | {
"method": "POST",
"path_template": "/v1beta/models/{model_and_method}",
"surface": "http"
} | https://apifacts.dev/google-gemini/daily-quota-resets-midnight-pacific |
Errors carry the google.rpc envelope: error.code is the HTTP status as a number, error.status a name such as INVALID_ARGUMENT, and error.details[] holds objects typed by @type (e.g. google.rpc.BadRequest). | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T00:31:20+00:00",
"probe": "af:google-gemini:probe:error-envelope",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-gemini:errors-use-google-rpc-envelope | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/errors-use-google-rpc-envelope |
The model names gemini-1.5-flash, gemini-1.5-pro and gemini-pro return HTTP 404 NOT_FOUND on GET /v1beta/models/<name>. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 130,
"first_seen": "2026-10-24T08:03:53+00:00",
"last_confirmed": "2026-10-31T01:16:23+00:00",
"probe": "af:google-gemini:probe:gemini-1-5-retired",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/v1beta/models"
}
] | af:google-gemini:gemini-1-5-models-retired | deprecation | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "NOT_FOUND",
"error_string": "Model is not found: models/gemini-1.5-flash for api version v1beta",
"normalized": "model is not found: models/gemini-#.#-flash for api version v#beta",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models/{model}",
"surface": "http"
} | https://apifacts.dev/google-gemini/gemini-1-5-models-retired |
gemini-2.0-flash, whose earliest shutdown date on the deprecations page is June 1, 2026, still answers GET /v1beta/models/gemini-2.0-flash with HTTP 200 and version 2.0. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 130,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:30:21+00:00",
"official_url": "https://ai.google.dev/gemini-api/docs/deprecations",
"probe": "af:google-gemini:probe:gemini-2-0-flash-served",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminu... | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-gemini:gemini-2-0-flash-served-past-shutdown-date | deprecation | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models/{model}",
"surface": "http"
} | https://apifacts.dev/google-gemini/gemini-2-0-flash-served-past-shutdown-date |
An API key that does not exist returns HTTP 400 INVALID_ARGUMENT, not 401 or 403; error.details[0].reason is API_KEY_INVALID. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:00:20+00:00",
"probe": "af:google-gemini:probe:models-invalid-key",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_header",
"name": "x-goog-api-key",
"value_source": "account_setting:api_key"
}
] | af:google-gemini:invalid-api-key-400 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "INVALID_ARGUMENT",
"error_string": "API key not valid. Please pass a valid API key.",
"normalized": "api key not valid. please pass a valid api key.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/invalid-api-key-400 |
A pageToken that the API did not issue returns HTTP 400 INVALID_ARGUMENT "Invalid page_token.". | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"probe": "af:google-gemini:probe:models-invalid-page-token",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 1000,
"param_name": "pageToken"
}
] | af:google-gemini:invalid-page-token-400 | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Invalid page_token.",
"normalized": "invalid page_token.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/invalid-page-token-400 |
The alias gemini-flash-latest and preview models such as gemini-3-flash-preview answer on v1beta but return HTTP 404 NOT_FOUND on v1. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 130,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:46:23+00:00",
"probe": "af:google-gemini:probe:latest-alias-v1beta-only",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/v1beta/models/{model}"
}
] | af:google-gemini:latest-aliases-v1beta-only | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "NOT_FOUND",
"error_string": "Model is not found: models/gemini-flash-latest for api version v1",
"normalized": "model is not found: models/gemini-flash-latest for api version v#",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1/models/{model}",
"surface": "http"
} | https://apifacts.dev/google-gemini/latest-aliases-v1beta-only |
A key that Google has detected as leaked is blocked: requests return HTTP 403 PERMISSION_DENIED "Your API key was reported as leaked. Please use another API key.". | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://ai.google.dev/gemini-api/docs/troubleshooting"
} | [
{
"action": "enable_in_dashboard",
"setting_key": "new_api_key",
"vendor_doc_url": "https://ai.google.dev/gemini-api/docs/troubleshooting"
}
] | af:google-gemini:leaked-key-403 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-gemini | {
"error_code": "PERMISSION_DENIED",
"error_string": "Your API key was reported as leaked. Please use another API key.",
"normalized": "your api key was reported as leaked. please use another api key.",
"status": 403
} | official | {
"method": "POST",
"path_template": "/v1beta/models/{model_and_method}",
"surface": "http"
} | https://apifacts.dev/google-gemini/leaked-key-403 |
A request with no API key returns HTTP 403 PERMISSION_DENIED ("Method doesn't allow unregistered callers"), not 401. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:30:20+00:00",
"probe": "af:google-gemini:probe:models-no-key",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_header",
"name": "x-goog-api-key",
"value_source": "account_setting:api_key"
}
] | af:google-gemini:missing-api-key-403 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "PERMISSION_DENIED",
"error_string": "Method doesn't allow unregistered callers (callers without established identity). Please use API Key or other form of API consumer identity to call this API.",
"normalized": "method doesn't allow unregistered callers (callers without established identity). ple... | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/missing-api-key-403 |
An unknown model name returns HTTP 404 NOT_FOUND with the message "Model is not found: models/<name> for api version v1beta". | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 129,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T00:46:22+00:00",
"probe": "af:google-gemini:probe:model-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/v1beta/models"
}
] | af:google-gemini:model-not-found-404 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "NOT_FOUND",
"error_string": "Model is not found: models/gemini-agent-facts-nosuch for api version v1beta",
"normalized": "model is not found: models/gemini-agent-facts-nosuch for api version v#beta",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models/{model}",
"surface": "http"
} | https://apifacts.dev/google-gemini/model-not-found-404 |
A model object from GET /v1beta/models/{model} has 12 top-level keys (description, displayName, inputTokenLimit, maxTemperature, name, outputTokenLimit, supportedGenerationMethods, temperature, thinking, topK, topP, version). | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 129,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:00:22+00:00",
"probe": "af:google-gemini:probe:model-schema-fingerprint",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-gemini:model-object-fingerprint | schema_drift | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models/{model}",
"surface": "http"
} | https://apifacts.dev/google-gemini/model-object-fingerprint |
GET /v1beta/models without pageSize returns 50 models and a nextPageToken; the rest of the list is only reachable with pageToken. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T00:46:20+00:00",
"probe": "af:google-gemini:probe:models-default-page",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 1000,
"param_name": "pageToken"
}
] | af:google-gemini:models-list-default-page-50 | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/models-list-default-page-50 |
A negative pageSize returns HTTP 400 INVALID_ARGUMENT "* ListModelsRequest.page_size: page_size must be positive". | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 82,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T01:46:21+00:00",
"probe": "af:google-gemini:probe:models-page-size-negative",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "remove_param",
"location": "query",
"name": "pageSize"
}
] | af:google-gemini:page-size-negative-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "INVALID_ARGUMENT",
"error_string": "* ListModelsRequest.page_size: page_size must be positive",
"normalized": "* listmodelsrequest.page_size: page_size must be positive",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/page-size-negative-400 |
pageSize=0 on GET /v1beta/models is not refused: it returns the default page of 50 models with a nextPageToken. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T00:01:21+00:00",
"probe": "af:google-gemini:probe:models-page-size-zero",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "paginate_with",
"cursor_field": "nextPageToken",
"page_size_max": 1000,
"param_name": "pageToken"
}
] | af:google-gemini:page-size-zero-means-default | pagination | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/page-size-zero-means-default |
Rate limits (requests per minute, input tokens per minute, requests per day) apply per Google Cloud project, not per API key: several keys of one project share them. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://ai.google.dev/gemini-api/docs/rate-limits"
} | [
{
"action": "backoff_exponential",
"base_ms": 1000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 60000
}
] | af:google-gemini:rate-limits-per-project | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-gemini | null | official | {
"method": "POST",
"path_template": "/v1beta/models/{model_and_method}",
"surface": "http"
} | https://apifacts.dev/google-gemini/rate-limits-per-project |
Exceeding a rate limit or quota returns HTTP 429 RESOURCE_EXHAUSTED, a transient error, like 503 UNAVAILABLE; 400, 402 and 403 are client errors that a retry does not fix. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://ai.google.dev/gemini-api/docs/troubleshooting"
} | [
{
"action": "backoff_exponential",
"base_ms": 1000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 60000
}
] | af:google-gemini:resource-exhausted-429 | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-gemini | {
"error_code": "RESOURCE_EXHAUSTED",
"status": 429
} | official | {
"method": "POST",
"path_template": "/v1beta/models/{model_and_method}",
"surface": "http"
} | https://apifacts.dev/google-gemini/resource-exhausted-429 |
An unknown query parameter returns HTTP 400 INVALID_ARGUMENT ("Cannot bind query parameter") instead of being ignored. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 81,
"first_seen": "2026-10-24T08:03:54+00:00",
"last_confirmed": "2026-10-31T00:16:21+00:00",
"probe": "af:google-gemini:probe:unknown-query-parameter",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-gemini:unknown-query-parameter-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-gemini | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Invalid JSON payload received. Unknown name \"agent_facts_unknown\": Cannot bind query parameter. Field 'agent_facts_unknown' could not be found in request message.",
"normalized": "invalid json payload received. unknown name \"agent_facts_unknown\": cannot bin... | verified:server:prod | {
"method": "GET",
"path_template": "/v1beta/models",
"surface": "http"
} | https://apifacts.dev/google-gemini/unknown-query-parameter-400 |
values:batchGet with an unparsable range fails as a whole with HTTP 400 "Unable to parse range"; without any ranges it returns 200 and no valueRanges field. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 638,
"first_seen": "2026-10-24T08:32:29+00:00",
"last_confirmed": "2026-10-31T01:46:26+00:00",
"probe": "af:google-sheets:probe:batch-get-one-bad-range",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:batch-get-fails-whole | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Unable to parse range: AgentFactsNoSuchSheet!A1",
"normalized": "unable to parse range: apifactsnosuchsheet!a#",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values:batchGet",
"surface": "http"
} | https://apifacts.dev/google-sheets/batch-get-fails-whole |
With majorDimension=COLUMNS an empty cell before a column's last value comes back as "" and the empty cells after it are dropped. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 50,
"first_seen": "2026-10-24T09:42:07+00:00",
"last_confirmed": "2026-10-30T23:46:19+00:00",
"probe": "af:google-sheets:probe:fixture-columns-major",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:columns-major-inner-empty-cells | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/columns-major-inner-empty-cells |
UNFORMATTED_VALUE with dateTimeRenderOption=FORMATTED_STRING returns dates as locale-formatted strings ("24/10/2026") while numbers stay JSON numbers. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 50,
"first_seen": "2026-10-24T09:42:08+00:00",
"last_confirmed": "2026-10-31T00:01:20+00:00",
"probe": "af:google-sheets:probe:fixture-date-formatted-string",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:date-time-formatted-string | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/date-time-formatted-string |
The first sheet is not always Sheet1: on this French-locale spreadsheet it is Feuille 1, and Sheet1!A1 returns HTTP 400 "Unable to parse range: Sheet1!A1"; a range without a sheet name reads the first sheet. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 51,
"first_seen": "2026-10-24T08:32:29+00:00",
"last_confirmed": "2026-10-30T23:15:19+00:00",
"probe": "af:google-sheets:probe:default-sheet-name-localized",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:default-sheet-name-follows-locale | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Unable to parse range: Sheet1!A1",
"normalized": "unable to parse range: sheet#!a#",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/default-sheet-name-follows-locale |
values.get on a range with no data returns HTTP 200 with range and majorDimension but no values field at all, not values: []. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 52,
"first_seen": "2026-10-24T08:32:30+00:00",
"last_confirmed": "2026-10-30T23:31:19+00:00",
"probe": "af:google-sheets:probe:empty-range-has-no-values",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:empty-range-omits-values | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/empty-range-omits-values |
By default values.get returns every cell as a string formatted in the spreadsheet's locale: on a fr_FR file 3.14159 comes back as "3,14159", a date as "24/10/2026" and a boolean as "TRUE". | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 50,
"first_seen": "2026-10-24T09:42:08+00:00",
"last_confirmed": "2026-10-31T00:16:20+00:00",
"probe": "af:google-sheets:probe:fixture-formatted-values",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "valueRenderOption",
"value_source": "literal:UNFORMATTED_VALUE"
}
] | af:google-sheets:formatted-values-follow-locale | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/formatted-values-follow-locale |
With valueRenderOption=FORMULA formulas come back as text in the spreadsheet locale's syntax: =DATE(2026;10;24) with semicolons on a fr_FR file, while plain numbers and booleans stay typed. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 50,
"first_seen": "2026-10-24T09:42:08+00:00",
"last_confirmed": "2026-10-31T00:31:19+00:00",
"probe": "af:google-sheets:probe:fixture-formula-values",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:formulas-in-locale-syntax | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/formulas-in-locale-syntax |
An API key that does not exist returns HTTP 400 INVALID_ARGUMENT with error.details[0].reason API_KEY_INVALID, not 401 or 403. | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 52,
"first_seen": "2026-10-24T08:32:30+00:00",
"last_confirmed": "2026-10-31T01:00:19+00:00",
"probe": "af:google-sheets:probe:invalid-api-key",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "key",
"value_source": "account_setting:api_key"
}
] | af:google-sheets:invalid-api-key-400 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "INVALID_ARGUMENT",
"error_string": "API key not valid. Please pass a valid API key.",
"normalized": "api key not valid. please pass a valid api key.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/invalid-api-key-400 |
A fields mask naming a field that does not exist returns HTTP 400 with the generic "Request contains an invalid argument.", without naming the field. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 321,
"first_seen": "2026-10-24T08:32:30+00:00",
"last_confirmed": "2026-10-31T01:46:25+00:00",
"probe": "af:google-sheets:probe:invalid-fields-mask",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "remove_param",
"location": "query",
"name": "fields"
}
] | af:google-sheets:invalid-fields-mask-generic-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Request contains an invalid argument.",
"normalized": "request contains an invalid argument.",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}",
"surface": "http"
} | https://apifacts.dev/google-sheets/invalid-fields-mask-generic-400 |
An unknown valueRenderOption returns HTTP 400 INVALID_ARGUMENT naming the field in snake_case (value_render_option) and the rejected value. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 52,
"first_seen": "2026-10-24T08:32:30+00:00",
"last_confirmed": "2026-10-31T01:16:20+00:00",
"probe": "af:google-sheets:probe:invalid-value-render-option",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "valueRenderOption",
"value_source": "literal:FORMATTED_VALUE"
}
] | af:google-sheets:invalid-value-render-option-400 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Invalid value at 'value_render_option' (type.googleapis.com/google.apps.sheets.v4.ValueRenderOption), \"PRETTY\"",
"normalized": "invalid value at 'value_render_option' (type.googleapis.com/google.apps.sheets.v#.valuerenderoption), \"pretty\"",
"status": 400
... | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/invalid-value-render-option-400 |
Reading even a public spreadsheet with no API key or token returns HTTP 403 PERMISSION_DENIED ("Method doesn't allow unregistered callers"). | {
"account_state": "any",
"env": "prod"
} | {
"confirmations": 52,
"first_seen": "2026-10-24T08:32:31+00:00",
"last_confirmed": "2026-10-31T01:30:19+00:00",
"probe": "af:google-sheets:probe:no-api-key",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "key",
"value_source": "account_setting:api_key"
}
] | af:google-sheets:missing-api-key-403 | auth_quirk | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "PERMISSION_DENIED",
"error_string": "Method doesn't allow unregistered callers (callers without established identity). Please use API Key or other form of API consumer identity to call this API.",
"normalized": "method doesn't allow unregistered callers (callers without established identity). ple... | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/missing-api-key-403 |
The untouched first sheet of a new spreadsheet has a grid of 1000 rows by 26 columns (gridProperties.rowCount and columnCount), the bounds ranges are clipped to. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 320,
"first_seen": "2026-10-24T08:32:31+00:00",
"last_confirmed": "2026-10-31T01:30:21+00:00",
"probe": "af:google-sheets:probe:new-sheet-grid",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:new-sheet-grid-1000x26 | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}",
"surface": "http"
} | https://apifacts.dev/google-sheets/new-sheet-grid-1000x26 |
Read and write requests are each limited to 300 per minute per project and 60 per minute per user per project, refilled every minute; going over returns HTTP 429. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://developers.google.com/workspace/sheets/api/limits"
} | [
{
"action": "backoff_exponential",
"base_ms": 1000,
"factor": 2,
"jitter": true,
"max_attempts": 5,
"max_ms": 64000
}
] | af:google-sheets:quota-per-project-and-user | rate_limit | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-sheets | {
"status": 429
} | official | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/quota-per-project-and-user |
A range that runs past the sheet's grid is clipped instead of refused: A1:ZZZ1 comes back as A1:Z1 and A1:B2000 as A1:B1000 on a 1000x26 sheet, with HTTP 200. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 51,
"first_seen": "2026-10-24T08:32:31+00:00",
"last_confirmed": "2026-10-31T01:46:19+00:00",
"probe": "af:google-sheets:probe:range-clipped-to-grid",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:range-clipped-to-grid | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/range-clipped-to-grid |
A request that Sheets processes for more than 180 seconds returns a timeout error; a 2 MB payload is the recommended maximum. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-24T08:00:00+00:00",
"official_url": "https://developers.google.com/workspace/sheets/api/limits"
} | [
{
"action": "reduce_payload",
"field": "values",
"max_bytes": 2000000
}
] | af:google-sheets:request-timeout-180s | latency_profile | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "manual"
} | google-sheets | null | official | {
"method": "PUT",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/request-timeout-180s |
A spreadsheet id that does not exist returns HTTP 404 NOT_FOUND "Requested entity was not found.". | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 51,
"first_seen": "2026-10-24T08:32:32+00:00",
"last_confirmed": "2026-10-30T22:46:20+00:00",
"probe": "af:google-sheets:probe:spreadsheet-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:spreadsheet-not-found-404 | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "NOT_FOUND",
"error_string": "Requested entity was not found.",
"normalized": "requested entity was not found.",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/spreadsheet-not-found-404 |
With valueRenderOption=UNFORMATTED_VALUE numbers and booleans are JSON numbers and booleans, and a date is its serial number: 2026-10-24 comes back as 46319. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 50,
"first_seen": "2026-10-24T09:42:08+00:00",
"last_confirmed": "2026-10-31T00:46:19+00:00",
"probe": "af:google-sheets:probe:fixture-unformatted-values",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "set_param",
"location": "query",
"name": "dateTimeRenderOption",
"value_source": "literal:FORMATTED_STRING"
}
] | af:google-sheets:unformatted-dates-are-serial-numbers | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/unformatted-dates-are-serial-numbers |
A range naming a sheet that does not exist returns HTTP 400 INVALID_ARGUMENT "Unable to parse range: <range>". | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 51,
"first_seen": "2026-10-24T08:32:32+00:00",
"last_confirmed": "2026-10-30T23:01:03+00:00",
"probe": "af:google-sheets:probe:unknown-sheet-range",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:unknown-sheet-unable-to-parse | error_meaning | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"error_code": "INVALID_ARGUMENT",
"error_string": "Unable to parse range: AgentFactsNoSuchSheet!A1",
"normalized": "unable to parse range: apifactsnosuchsheet!a#",
"status": 400
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/unknown-sheet-unable-to-parse |
values is a ragged array: each row ends at its last non-empty cell (a two-cell row of A1:E5 has two items) and an empty row between filled ones comes back as []. | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 50,
"first_seen": "2026-10-24T09:42:08+00:00",
"last_confirmed": "2026-10-31T00:16:20+00:00",
"probe": "af:google-sheets:probe:fixture-formatted-values",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:value-rows-not-padded | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/value-rows-not-padded |
An open range such as A:A is answered with explicit bounds, A1:A1000 on a 1000-row sheet, and the first sheet's quoted name ('Feuille 1'!A1:A1000). | {
"account_state": "api_key",
"env": "prod"
} | {
"confirmations": 51,
"first_seen": "2026-10-24T08:32:31+00:00",
"last_confirmed": "2026-10-31T01:46:19+00:00",
"probe": "af:google-sheets:probe:range-clipped-to-grid",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:google-sheets:whole-column-range-expanded | silent_behavior | {
"author": "bot",
"created": "2026-10-24T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-24T00:00:00"
}
],
"source": "probe"
} | google-sheets | {
"status": 200
} | verified:server:prod | {
"method": "GET",
"path_template": "/v4/spreadsheets/{spreadsheet_id}/values/{range}",
"surface": "http"
} | https://apifacts.dev/google-sheets/whole-column-range-expanded |
info.downloads in the JSON API is deprecated: last_day, last_week and last_month are always -1, and bugtrack_url is always null. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 146,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"official_url": "https://docs.pypi.org/api/json/#get-a-project",
"probe": "af:pypi:probe:json-project",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:pypi:downloads-always-minus-one | deprecation | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | null | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/json",
"surface": "http"
} | https://apifacts.dev/pypi/downloads-always-minus-one |
GET /pypi/{project}/json with a non-normalized name such as Typing_Extensions returns HTTP 200 directly, without a redirect, and info.name is typing-extensions. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 145,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T01:00:20+00:00",
"probe": "af:pypi:probe:json-unnormalized-name",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:pypi:json-api-accepts-unnormalized-name | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | null | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/json",
"surface": "http"
} | https://apifacts.dev/pypi/json-api-accepts-unnormalized-name |
JSON API responses are CDN-cached with Cache-Control max-age=900 and carry ETag and X-PyPI-Last-Serial. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 146,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T01:16:21+00:00",
"official_url": "https://docs.pypi.org/api/#caching",
"probe": "af:pypi:probe:json-project",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:pypi:json-api-cdn-cache | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | null | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/json",
"surface": "http"
} | https://apifacts.dev/pypi/json-api-cdn-cache |
GET /pypi/{project}/json/ with a trailing slash returns HTTP 301 with a relative Location /pypi/{project}/json and an HTML body, not JSON. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 566,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T01:46:25+00:00",
"probe": "af:pypi:probe:json-trailing-slash",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/pypi/{project}/json"
}
] | af:pypi:json-trailing-slash-301 | silent_behavior | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | {
"status": 301
} | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/json/",
"surface": "http"
} | https://apifacts.dev/pypi/json-trailing-slash-301 |
PyPI's JSON, RSS and Index APIs are not rate limited at the edge because of heavy CDN caching, but PyPI may prohibit a consumer for irresponsible activity. | {
"account_state": "any",
"env": "prod"
} | {
"first_seen": "2026-10-20T09:15:00+00:00",
"official_url": "https://docs.pypi.org/api/#rate-limiting"
} | [
{
"action": "set_header",
"name": "User-Agent",
"value_source": "account_setting:contact_identifying_user_agent"
}
] | af:pypi:no-edge-rate-limit | rate_limit | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "manual"
} | pypi | null | official | {
"method": "GET",
"path_template": "/pypi/{project}/json",
"surface": "http"
} | https://apifacts.dev/pypi/no-edge-rate-limit |
On 2026-10-20 /pypi/{project}/json had the top-level keys info, last_serial, ownership, releases, urls and vulnerabilities, schema fingerprint f2ea8b7e27a470cf. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 142,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T00:31:21+00:00",
"probe": "af:pypi:probe:json-project-fingerprint",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:pypi:project-json-fingerprint | schema_drift | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | null | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/json",
"surface": "http"
} | https://apifacts.dev/pypi/project-json-fingerprint |
GET /pypi/{project}/json for a project that does not exist returns HTTP 404 with the JSON body {"message": "Not Found"}. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 142,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T01:46:21+00:00",
"probe": "af:pypi:probe:json-not-found",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "none_known",
"reason_kind": "by_design"
}
] | af:pypi:project-not-found-404 | error_meaning | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | {
"error_string": "Not Found",
"normalized": "not found",
"status": 404
} | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/json",
"surface": "http"
} | https://apifacts.dev/pypi/project-not-found-404 |
GET /pypi/{project}/{version}/json no longer has the releases key; the files of every release are only on /pypi/{project}/json and the Index API. | {
"account_state": "anonymous",
"env": "prod"
} | {
"confirmations": 427,
"first_seen": "2026-10-20T09:06:07+00:00",
"last_confirmed": "2026-10-31T01:16:24+00:00",
"official_url": "https://docs.pypi.org/api/json/#get-a-release",
"probe": "af:pypi:probe:json-release",
"stale_counter": 0,
"vantages": [
"mac-dev",
"illouminus"
]
} | [
{
"action": "use_endpoint",
"method": "GET",
"path_template": "/simple/{project}/"
}
] | af:pypi:release-json-has-no-releases-key | breaking_change | {
"author": "bot",
"created": "2026-10-20T00:00:00",
"history": [
{
"by": "bot",
"change": "created",
"date": "2026-10-20T00:00:00"
}
],
"source": "probe"
} | pypi | null | verified:server:prod | {
"method": "GET",
"path_template": "/pypi/{project}/{version}/json",
"surface": "http"
} | https://apifacts.dev/pypi/release-json-has-no-releases-key |
End of preview. Expand in Data Studio
apifacts
Verified, dated facts about what third-party HTTP APIs actually return — error strings, status codes, limits, silent behaviour changes — each with typed fixes. Every fact comes from a deterministic probe run against the live API; no language model is in the verification path.
- Live registry and API: https://apifacts.dev (
POST /v0/checkwith a failing request → matching facts) - Source, probes and schema: https://github.com/Illouminus/apifacts
- Python:
pip install apifacts(CLI, MCP serverapifacts mcp),pip install apifacts-pytest
Fields
One JSON object per fact (data/facts.jsonl):
| field | meaning |
|---|---|
id |
stable id, af:<service>:<slug> |
service, target |
service key; surface, HTTP method and path template |
signal |
status, vendor error_code, the real error_string and its normalized match form |
claim |
the fact in one sentence |
fixes |
typed fixes (vocabulary: spec 02 in the repo) |
status |
e.g. verified:server:prod, official |
evidence |
probe id, first seen, last confirmed, confirmations, vantages |
url |
the fact's page on apifacts.dev |
Facts change: a fact is re-confirmed by probes daily and goes stale or retracted when the API changes. Prefer the live API for current answers; this dataset is a snapshot.
License
Data CC BY 4.0 (attribution: apifacts, https://apifacts.dev). Code in the repository is MIT.
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