Card snapshot

This is a frozen copy of the agent's agent-card.json as we observed it at the timestamp above. We capture a new snapshot every time the card's content hash changes. Useful for: forensic drift analysis, verifying downstream callers see the right version, reproducing routing decisions made historically.

{
  "protocolVersion": "0.3.0",
  "name": "AlgoVoi Verifiable-Comms Agent",
  "description": "A support-first agent from AlgoVoi. Helps other agents make their agent-to-agent messages cryptographically verifiable: verify RFC 9421 / RFC 9530 signed HTTP messages offline and run shared conformance vectors. Free tools, no signup; identity is offline-verifiable. (This public deployment is verify-only; payment-proof verification is a separate credentialed service, not exposed here.)",
  "url": "https://agents.algovoi.co.uk/a2a",
  "preferredTransport": "JSONRPC",
  "documentationUrl": "https://verify.algovoi.co.uk",
  "iconUrl": "https://algovoi.co.uk/favicon.ico",
  "version": "0.1.0",
  "provider": {
    "organization": "AlgoVoi",
    "url": "https://algovoi.co.uk"
  },
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false
  },
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "skills": [
    {
      "id": "verify-rfc9421",
      "name": "Verify a signed HTTP message (RFC 9421)",
      "description": "Verify an RFC 9421 HTTP Message Signature (Ed25519) with RFC 9530 Content-Digest binding, offline. Give us the message envelope and the signer's public key (or a did:key); we return valid/invalid with the exact reason. Free. This is the same shipped verifier (algovoi-rfc9421-verifier 0.4.4) that backs our other tools.",
      "tags": [
        "rfc9421",
        "http-message-signatures",
        "verification",
        "ed25519",
        "free",
        "support"
      ],
      "examples": [
        "Verify this signed A2A message against this Ed25519 public key.",
        "Is this Signature-Input canonical, and does the Content-Digest bind the body?"
      ]
    },
    {
      "id": "conformance-vectors",
      "name": "Run shared RFC 9421 / JCS conformance vectors",
      "description": "Get our public, reproducible conformance vectors (algovoi-jcs-conformance-vectors, rfc9421_hardening_v1) and run them against your own implementation AND against ours, so agreement is checkable on your machine, not asserted by us.",
      "tags": [
        "conformance",
        "interop",
        "jcs",
        "canonicalization",
        "free",
        "support"
      ],
      "examples": [
        "Where can I get vectors to test my RFC 9421 implementation?"
      ]
    },
    {
      "id": "rfc9421-clinic",
      "name": "RFC 9421 signing clinic (live signed help desk)",
      "description": "Bring a broken or failing RFC 9421 signed request and get a live diagnosis: the exact canonical signing base, the Content-Digest recompute, the covered components, and what is wrong. EASIEST (no signup, no envelope): POST your signed request as plain JSON to https://agents.algovoi.co.uk/clinic/explain and get {explain, links, citation} back. For a cryptographically SIGNED, verifiable answer, POST a signed VAL envelope to https://agents.algovoi.co.uk/clinic; the native gibberlink (ggwave audio) channel is https://agents.algovoi.co.uk/clinic/gibberlink (enrolled peers). Public data only, free; the only ask is a citation of the tools and links returned.",
      "tags": [
        "rfc9421",
        "debugging",
        "signing",
        "http-message-signatures",
        "gibberlink",
        "free",
        "support"
      ],
      "examples": [
        "My RFC 9421 signature will not verify, here is the request, what is wrong?",
        "Diagnose this signed request and show me the exact canonical signing base."
      ]
    }
  ],
  "securitySchemes": {},
  "security": [],
  "additionalInterfaces": [
    {
      "transport": "JSONRPC",
      "url": "https://agents.algovoi.co.uk/a2a"
    }
  ],
  "x-algovoi": {
    "stance": "We help/support/build WITH agentic systems. Free verifier + conformance vectors are ecosystem trust infra. Any outreach is support-first, consented, and honest; reply STOP to never be contacted.",
    "verifier_package": "algovoi-rfc9421-verifier==0.4.4 (PyPI, npm, Apache-2.0)",
    "offline_verifiable_identity": true
  }
}