csoai/a2a-census

A2A agent census

DISCOVERED — read-only census of A2A (Agent2Agent) agent cards. Keyless crawl of /.well-known/agent-card.json + A2A v1.0 conformance + ONE controlled deterministic capability probe per agent. No real task was ever sent to a stranger agent; nothing published. The live board is GET https://councilof.ai/api/gspc.

Defensible seed list: the agent domains discovered genuinely on-chain-live in the ERC-8004 live-filter (their declared service endpoints), plus a curated set of well-known A2A domains. We fetched /.well-known/agent-card.json (legacy agent.json fallback), checked it against the A2A v1.0 AgentCard shape (frozen Mar 2026), and ran one probe.

Result (a2a_census.json)

• 18 seeds crawled. Only 5 serve a conformant AgentCard; 13 serve no card (many return an HTML lander at the well-known path). Most on-chain-"live" agents do not publish a conformant A2A card.
• Capability-honesty axis — ONE deterministic probe I control: a JSON-RPC tasks/get with a random nonexistent id (read-only; asks the agent to do no real work, triggers no payment). Graded declared-vs-actual transport:
  • TRANSPORT_HONEST — declares A2A JSON-RPC and answered with a well-formed JSON-RPC envelope (e.g. A-Identity Trust Oracle, Brain On BNB).
  • TRANSPORT_MISMATCH — declares an A2A card but the transport did not answer JSON-RPC correctly (a real declared-vs-actual gap).

Reported context (cited, not endorsed, not A2A-specific)

Carnegie Mellon TheAgentCompany benchmark (arXiv:2412.14161, May 2025) reported the worst model (Llama-3.1-405b) failed 92.6% of real-world office tasks; the best (Gemini 2.5 Pro) still failed 70%. This is a general agent-task-completion benchmark, not an A2A-protocol measurement — cited to motivate measuring declared-vs-actual capability. https://arxiv.org/abs/2412.14161

Files

• a2a_census.jsonl — flat viewer table, one row per crawled seed (18): agent_name, domain, seed, card_state (CONFORMANT/NO_CARD), capability_honesty_verdict, skill_count, as_of. Field-presence lists live in a2a_census.json, not this table.
• a2a_census.json — per-seed card URL, conformance, field presence, honesty probe verdict.
• a2a_atoms.json — the unique conformant agents with their honesty verdict.
• ledger-card-a2a-agent-unsigned.json — the a2a.agent card-v0 atom (sig_ed25519=null — NO_LAPTOP_SIGN, queued for GHA OIDC signing).

What this is not

• No real A2A task was sent — only one controlled protocol-level probe per agent.
• Skill execution correctness is unmeasured[]. Streaming/push actuals unmeasured.
• Not a GSPC axis. No GSPC measure fields on any card.

Measurement, not certification. Verify a card (free, no account): https://councilof.ai/gspc-verify

The live board is the authority

GET https://councilof.ai/api/gspc — quote totals.public_count. This Hub card is a printer of that GET, never a second engine. If the fetch fails the honest answer is UNCHECKABLE — never a fabricated 0.000. Status words: LOADING / UNREACHABLE / UNMEASURED / UNCHECKABLE.

Lid: 22 axes measured · 14 model fleets · 3 public leader scores · 8 fact runs · TIE is TIE · not a certificate.

Capability + living GET (TUI7 distribution 2026-09-14)

SUPERSEDED: typed Hub triples LIVE (re-GET /api/hub-cards → counts.*) (and prior 885/900/937/1113/1182/1185) — do not re-paste. Hub cite = live GET only.

Live board: GET https://councilof.ai/api/gspc → quote totals.public_count / totals.lid (22·22·0 derived, never typed as a frozen paste)
Hub cards: GET https://councilof.ai/api/hub-cards → quote counts.cells / counts.measured / counts.unmeasured LIVE (no typed Hub triple)
Hub bank: https://huggingface.co/datasets/csoai/gspc-hub-cards
Free verify: https://councilof.ai/gspc-verify
Discovery: GET https://councilof.ai/.well-known/x402.json (live · Base · USDC)
OX discovery resources: councilof 0/60 honest — do not invent rows
Measurement, never certification. Printer only — no axis mine on ZeroGPU. A100 COLD.

Council of AI — GSPC + Hub printer

• Living board: https://councilof.ai/api/gspc — quote totals.public_count / totals.lid (never invent MEASURED)
• Hub cite: https://councilof.ai/api/hub-cards — re-GET; quote counts.* (typed LIVE (re-GET /api/hub-cards → counts.*) SUPERSEDED 2026-09-14)
• Hub dataset bank: https://huggingface.co/datasets/csoai/gspc-hub-cards
• Verify free: https://councilof.ai/gspc-verify
• x402 discovery: https://councilof.ai/.well-known/x402.json
• Catalog: https://councilof.ai/api/x402
• Free door (amount 0): https://councilof.ai/api/free-door
• Jail goldbank: https://huggingface.co/datasets/csoai/gspc-jail-goldbank
• Human: free + x402 PAYG · Coming—Paddle not live · never Stripe
• Agents: payTo is merchant receive — never the signer
• Self-settle proves the rail; stranger revenue is separate (do not invent buyers)
• Measurement, not certification. Never sell a rank. Never certify.

Any Hub x402.json in a CSOAI printer is a byte-mirror of the living well-known GET — not a second authority.

OpenAPI / CDP discovery (apex · Wave E)

OpenAPI (canonical): GET https://councilof.ai/openapi.json  → version 0.2+6c709613dc31 · 97 paths
NOT: https://councilof.ai/public/openapi.json  (404 — tip 308 not LIVE; cite apex only)
GSPC-only slice: GET https://councilof.ai/api/openapi.json  (7 paths — not CDP paid catalog)
x402 discovery: GET https://councilof.ai/.well-known/x402.json  (mode live · Base eip155:8453 · USDC)
Catalog: GET https://councilof.ai/api/x402
Living board: GET https://councilof.ai/api/gspc → 22 axis · 22 measured (22·22·0)
Verify free: https://councilof.ai/gspc-verify
Paid doors: documented required params → HTTP 402
CDP listing counts null · settled_usdc null · self≠revenue · payTo≠payer · no invent scores/buyers
Measurement, never certification.

This repository: NOT A BOARD MEASUREMENT — this repository is a corpus, mirror or door published by CSOAI. It carries no axis score. The measured slots live on the board GET below.

Live board (authority)	https://councilof.ai/api/gspc
Verify a card — free, no account	https://councilof.ai/gspc-verify
How to verify, by hand	https://councilof.ai/signed/HOW-TO-VERIFY.md
Transparency root (Merkle)	https://councilof.ai/root.json
Every CSOAI repo on the Hub	https://huggingface.co/csoai
Methodology DOI	https://doi.org/10.5281/zenodo.21991104
MCP endpoint — 12 tools, verified 2026-09-04T04:33:29Z	POST https://councilof.ai/mcp
MCP Registry	io.github.CSOAI-ORG/gspc — version not pinned here; the registry is the authority
npm — MCP server	csoai-gspc-mcp — npx -y csoai-gspc-mcp. No version is pinned here: ask the registry for the current one rather than trusting a number written on a card.
Python reader + card verifier	pip install "csoai-gspc[verify]" then csoai-gspc check — re-derives the board totals from the axis array and exits non-zero if they disagree
This board as a dated, citable snapshot	https://doi.org/10.5281/zenodo.22293341

What is in this repository

file	bytes	rows	what
a2a_census.json	7658		JSON document
README.md	4217		card
a2a_census.jsonl	4034	18	data (one JSON object per line)
ledger-card-a2a-agent-unsigned.json	2218		JSON document
a2a_atoms.json	2116		JSON document
manifest.jsonl		6	derived at 2026-09-04T04:33:29Z

manifest.jsonl is derived from this repository's own file tree at 2026-09-04T04:33:29Z; it lists every file with its size, its blob hash and a direct URL, so an agent can enumerate the repo without cloning it.

Citation

@misc{csoai_gspc_a2a_census,
  title        = {A2A agent census},
  author       = {{CSOAI Ltd}},
  year         = {2026},
  doi          = {10.5281/zenodo.21991104},
  howpublished = {Hugging Face Hub, \url{https://huggingface.co/datasets/csoai/a2a-census}},
  note         = {Live board: https://councilof.ai/api/gspc. Measurement, not certification.}
}

---

Measurement, not certification. No slot is for sale and no empty slot is filled by payment. Issued by CSOAI Ltd (England & Wales, Companies House 16939677), 3rd Floor, 86–90 Paul Street, London EC2A 4NE. Card refreshed 2026-09-04T04:33:29Z; every number above is either fetched live or carries the timestamp at which it was read.

Signed measurement archive (free cite · never a grade)

Living board: GET https://councilof.ai/api/gspc → 22 axis · 22 measured · lid: 22 axes measured · 14 model fleets · 3 public leader scores · 8 fact runs · TIE is TIE · not a certificate.
Signed card index: GET https://councilof.ai/signed/card_index.json → n_cards=335 · schema csoai.gspc-card-index/0.1
How to verify (stranger): https://councilof.ai/signed/HOW-TO-VERIFY.md
Free verify UI: https://councilof.ai/gspc-verify/
Example SIGNED card: https://councilof.ai/signed/cards/cff1aaf070acb97c224177809856bc20310f4958eb44bdffab7d4b04836535f4.json
Hub census (≠ board ≠ card_index): GET https://councilof.ai/api/hub-cards → 131/131/0
HF printers: https://huggingface.co/datasets/csoai/gspc-hub-cards · https://huggingface.co/datasets/csoai/gspc-jail-goldbank
Supply-led: CSOAI measures public systems independently first; sells delivery/freshness/monitoring/integration/replay/extra compute — never grades or favourable results.
Measurement credential, never certification. Free refresh only.

Owner: N-Sites — free paste onto HF/Kaggle printers. Hub LIVE 131 (kill 1191/1196). card_index n=335. Never invent VC/revenue. Stamp 2026-09-14T10:37Z.