{
  "name": "Council of AI Measurement Agent",
  "description": "Independent AI-governance measurement body. Publishes frozen benchmark harnesses, measures models and agent systems under deterministic conditions, and signs results (Ed25519) so evidence is recompute-able by any third party. No certification, accreditation, or enforcement authority — we measure, we publish harnesses, others recompute.",
  "url": "https://csoai.org",
  "provider": {
    "organization": "Council of AI (CSOAI LTD, UK #16939677)",
    "url": "https://csoai.org"
  },
  "version": "0.1.0",
  "documentationUrl": "https://csoai.org",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extensions": [
      {
        "uri": "https://councilof.ai/a2a/extensions/signed-receipts/v1/",
        "required": false,
        "description": "A DRAFT WE PUBLISH AND DO NOT YET EMIT: this agent attaches no receipt to a response today. Declared because we author the specification, not because the door implements it. Ed25519-signed task-outcome receipts plus a did:web key-trust convention for AgentCard signing (A2A v1.0 §8.4). A receipt is evidence of what was claimed, not a certification, and a signature over it is an integrity claim rather than a truth claim."
      },
      {
        "uri": "https://councilof.ai/.well-known/x402.json",
        "required": false,
        "description": "x402 discovery index for the agent pay rail (also GET /api/x402). Free door amount 0 at /api/free-door. Verification stays free. payTo is merchant not payer. Self-settle is not revenue. Settlement is PROVEN on Base mainnet: transaction hashes are published in docs/product/SETTLED-DOORS and verifiable on chain by anyone, independently of this server. Measurement credential, never a grade."
      },
      {
        "uri": "https://github.com/x402-foundation/x402/blob/69652a69798f0b08f95bef33318896e36e210f7e/specs/extensions/extension-offer-and-receipt.md",
        "required": false,
        "description": "x402 Offer & Receipt extension (v0.6), JWS profile — CONDITIONALLY EMITTED. A signed offer is attached only when BOARD_SIGN_KEY_PKCS8_B64 is provisioned and an accepts[] entry can be committed; otherwise the 402 carries csoai.offer_receipt with the gap and no offer-receipt extension block. A signed receipt is attached only after facilitator-confirmed settlement when the facilitator names a payer and the board key is available; otherwise the paid artefact still delivers and receiptGap states why no signed receipt was attached. When emitted, the format is jws, alg EdDSA, kid did:web:csoai.org#board-attestation-1, resolvable at https://csoai.org/.well-known/did.json (an authorization mechanism the extension names in section 4.5.1). eip712 is NOT emitted: the edge has no secp256k1 signer; when the optional Ed25519 board key is provisioned it signs JWS. A format we cannot produce is better declared missing than faked. A receipt proves this server signed those bytes; it is not by itself proof that money moved, and the transaction field, when present, is a claim to check against the chain."
      }
    ]
  },
  "skills": [
    {
      "id": "measured-leaderboard",
      "name": "Measured results readout",
      "description": "Returns measured benchmark results only — official lm-eval-harness format runs on frozen splits with confidence intervals. No fabricated baselines."
    },
    {
      "id": "health",
      "name": "Liveness probe",
      "description": "Honest liveness signal. No invented metrics."
    }
  ],
  "identity": {
    "did": "did:web:csoai.org",
    "didDocument": "https://csoai.org/.well-known/did.json",
    "signedWith": "did:web:csoai.org#site-release-1"
  },
  "verification": {
    "canon": "json.dumps(payload without 'signatures', sort_keys=True, separators=(',',':'), ensure_ascii=False)",
    "contentId": "sha256(canonical utf-8) as lowercase hex",
    "signature": "Ed25519 over contentId.encode(); public keys published in the DID document",
    "verifyUrl": "https://councilof.ai/verify"
  },
  "signatures": [
    {
      "protected": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6Y3NvYWkub3JnI3NpdGUtcmVsZWFzZS0xIiwidHlwIjoiSldUIn0",
      "signature": "hPajCdbgeyHNck1nZYjSJ6_8SOPm4AKF6y-dnhitfXgWiHBp-KpXhs8AinUw_3Bu3tHk_KGtjH2Z0LJIOH-_CA",
      "header": {
        "typ": "JWT"
      }
    }
  ]
}