date timestamp[s]date 2026-09-27 00:00:00 2026-10-05 00:00:00 | events int64 11.7k 19.7k | feed_commit stringclasses 9
values | files int64 109k 213k | generator dict | manifest_format stringclasses 1
value | manifest_sha256 stringclasses 9
values |
|---|---|---|---|---|---|---|
2026-09-27T00:00:00 | 11,707 | eeb1bba0d972287d4acd0885b9a102a7b66a7a1f | 109,474 | {
"heldfast": "0.2.0",
"main_commit": "dfea0fddf92a260a1524c044f49738a4c1e6bec7"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | 8f6218e610db3f842dabc8de10c4b26080ddfb81499914df43e720c9ab2460aa |
2026-09-28T00:00:00 | 12,366 | df335660dd1c1e8111a40a1844b159e0c1bf268b | 136,626 | {
"heldfast": "0.2.2",
"main_commit": "69b042ccbb758c896cbaf28b00615e7aee7d7c18"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | f895a0737057cd5b96ba559ffee5bca61a938a4f687571b7eaad012ebd1fb526 |
2026-09-29T00:00:00 | 13,021 | 08a6e310855f6facb9d3bf6e4203db59733bd1ca | 171,308 | {
"heldfast": "0.2.2",
"main_commit": "bcd56c7ce948763b632af07cdee886aca9b46aa1"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | c16aa7cc35e5e04fd65fe2a86d664cb22f102704e0529b0a4a17c3e5e4693e00 |
2026-09-30T00:00:00 | 13,631 | 67dbcf5b669fcd570561fe3d3d913964a3b22480 | 174,986 | {
"heldfast": "0.2.2",
"main_commit": "5bb2a0bdd4ab7af7145022a1bb0560c653159e2b"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | 36a644d370e5841cf519f4b44f96218978b52a31fc7ffa2cedbd260048aed3d7 |
2026-10-01T00:00:00 | 15,868 | 398441983a31e9264da9c77c89e130f95cbd22de | 188,880 | {
"heldfast": "0.2.2",
"main_commit": "2ad47f3d881ad42de8394e13412ec28b744d4ad0"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | 05f6f1e0a6abf7144d0dde084c4b846297900b8a5d6c02cf47f244a435d92872 |
2026-10-02T00:00:00 | 16,462 | 0d571ebc863216d6518f00ac26c7049abdf66307 | 195,842 | {
"heldfast": "0.2.3",
"main_commit": "b5f6e4860aa7f4a9cf2b70e55f8399008c701b08"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | 22c3fe2d821d7e009ecd52aa0cdbf2bf6d735655c7d5f53647d3c20be3335761 |
2026-10-03T00:00:00 | 18,784 | d63515d881dde4639ceb683102d7f37b698ab618 | 206,479 | {
"heldfast": "0.2.3",
"main_commit": "92fe2c77b5183c4ac87cc3c464695cf9cc3be463"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | 97c44859467162057584c8e1924aee19f1fee7b324d6a6ab695c059ad4a0ded9 |
2026-10-04T00:00:00 | 19,220 | 364b0b5668085b2164b2974539fa5e6cef2bd759 | 210,503 | {
"heldfast": "0.2.3",
"main_commit": "d4f019576785dbd1753bded713eb78649fbfe045"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | 05a552421c49fd763d4197237af709cab42babfdf24619a6e67981710f8f4c2d |
2026-10-05T00:00:00 | 19,691 | f27804141caac13b24382c8eafcd5fcc31d4bde7 | 212,655 | {
"heldfast": "0.2.3",
"main_commit": "5a9a769ef362ff59b9f8b1baad5773f628ef84e3"
} | one line per file in feed_commit outside checkpoints/: the SHA-256 of its bytes in lowercase hex, two spaces, its path, a line feed; sorted by path as UTF-8 bytes | bb95a73249da323e6f6a8a22a5838de32604f0ab869a1f7b10b5468e7fc554c7 |
heldfast drift feed
A running record of what MCP servers tell AI agents about their tools, and when it changes: every npm stdio server and every hosted endpoint in the official MCP registry that answers without credentials, read by heldfast. This dataset is a copy of rufat325/heldfast-feed, kept outside GitHub.
What is here
snapshot-YYYY-MM.tar.gz-- the whole feed at the month's first checkpoint, with its SHA-256 insnapshot-YYYY-MM.tar.gz.sha256daily/YYYY-MM-DD.tar.gz-- what changed since the previous archive: the files added or changed, and.heldfast-archive/deletedcheckpoints/-- each day's checkpoint, its OpenTimestamps proof and its Sigstore bundle, as they are in the feedMIRRORED_FROM-- the feed commit this copy is current to, and its day
The dataset viewer shows the checkpoints, one row a day: the feed commit, how many files and events it held, and the digest that was anchored. The records themselves are in the archives, which the viewer does not open.
Unpack a snapshot, then each daily archive after it in order, deleting the
paths each lists, and you have the feed at that day's checkpoint. Every
archive is deterministic, so it can be rebuilt from the feed repository and
compared byte for byte. The feed holds paths that differ only in letter case,
which Windows and macOS disks fold into one: there, check a copy with
python research/feed/archive.py verify --checkpoint checkpoints/<day>.json snapshot-<month>.tar.gz daily/... from the heldfast repository, which
rebuilds it in memory.
How it is collected
One vantage point, in GitHub Actions. Every npm server is checked for a new release, the most-downloaded daily and the rest weekly; a new release is started in a container with no network, no capabilities and no credentials. Hosted servers are read daily, and every four hours while they keep changing, by a client that identifies itself as heldfast. Hosted history starts on 23 September 2026. What each file holds, and why the collection runs continuously: TRANSPARENCY.md.
Verifying it
Each day's commit is described by checkpoints/YYYY-MM-DD.json, a digest of
every file in it, anchored in Bitcoin with OpenTimestamps and signed with
Sigstore. Rebuild the tree, compute the manifest the checkpoint describes,
compare the digest, then verify the proof. From a clone of the feed
repository, on Linux:
day=2026-09-28
commit=$(python3 -c "import json; print(json.load(open('checkpoints/$day.json'))['feed_commit'])")
mkdir ../at && git -c core.autocrlf=false archive "$commit" | tar -x -C ../at
(cd ../at && find . -type f ! -path './checkpoints/*' -printf '%P\0' \
| LC_ALL=C sort -z | xargs -0 sha256sum | sha256sum) # = manifest_sha256
pip install opentimestamps-client && ots verify checkpoints/$day.json.ots
The Sigstore check, and what each step trusts: TRANSPARENCY.md. A checkpoint proves the data existed no later than its anchor; it does not prove the data is accurate.
Caveats
- One anonymous reader. A hosted server can recognise it and show it what it shows everyone, change between readings, or show signed-in clients tools this never sees.
- A few operators account for most of the changes, many of them only a
number ticking.
stats.jsoncounts every event by operator and kind. - The tool descriptions are the servers' own text, recorded as they were sent. They belong to their authors.
Licence
This project's own data -- the measurements, dates, grades, counts, digests, checkpoints and the archives' structure -- is licensed under Creative Commons Attribution 4.0. Credit it as "heldfast drift feed (rufat325/heldfast-feed)".
The tool names, descriptions and schemas recorded in it are the MCP servers' own text, written by their authors, and are not licensed by this project. They are included as a record of what each server published, and remain their authors'. To ask for something to be removed, open an issue at rufat325/heldfast-feed.
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