AlgoVoi Payment Agent

{
  "name": "AlgoVoi Payment Agent",
  "description": "Multi-chain, multi-protocol crypto payment verification agent. Verifies on-chain payments (Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, ARC) and gates access to resources using x402, MPP (IETF), or AP2 (Google Agentic Payments) protocols. Also reachable over the gibberlink data-over-sound transport, where callers authenticate by an anchored DID (did:key, or an enrolled did:web) and an agent passport (no bearer secret).",
  "url": "https://api.algovoi.co.uk/a2a/jsonrpc",
  "version": "1.0.0",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extendedAgentCard": true,
    "extensions": [
      {
        "uri": "https://api.algovoi.co.uk/ext/scoped-authorization-receipts/v1",
        "description": "Issues and verifies scoped authorization (compliance) receipts for high-impact payment actions. Each receipt binds a closed categorical outcome to the action, resource, request digest, issuing provider DID, and issuance time, signed for offline verification against the published JWKS.",
        "required": false,
        "params": {
          "role": "issuer-verifier",
          "authority_manifest_uri": "https://api.algovoi.co.uk/.well-known/did.json",
          "receipt_issued_for": [
            "payment.authorize",
            "payment.settle",
            "compliance.screen"
          ],
          "receipt_transport": {
            "type": "response_body",
            "field": "compliance_receipt"
          },
          "receipt_binds": [
            "agent_id",
            "action",
            "resource",
            "request_digest",
            "provider_did",
            "issued_at",
            "jurisdiction"
          ],
          "receipt_outcomes": [
            "ALLOW",
            "REFER",
            "DENY"
          ],
          "receipt_verification": {
            "format": "JWS",
            "algorithms": [
              "EdDSA"
            ],
            "jwks_uri": "https://api.algovoi.co.uk/.well-known/jwks.json"
          },
          "receipt_profile_uri": "https://api.algovoi.co.uk/compliance/attestation"
        }
      }
    ]
  },
  "authentication": {
    "schemes": [
      "apiKey"
    ]
  },
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "verify-payment",
      "name": "Verify On-Chain Payment",
      "description": "Verify that a blockchain transaction satisfies the payment requirements for a gated resource. Supports x402, MPP, and AP2 protocols on Algorand, VOI, Hedera, Stellar, Base, Solana, Tempo, and ARC networks. Returns verified=true and an access_token JWT on success.",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "payment",
        "blockchain",
        "verification",
        "x402",
        "mpp",
        "ap2"
      ],
      "examples": [
        "Verify tx ABC123 on algorand_mainnet for resource premium-content",
        "Check if payment has been received for checkout token chk_xyz"
      ]
    },
    {
      "id": "create-checkout",
      "name": "Create Hosted Checkout",
      "description": "Create a hosted payment link for a given amount. Returns a checkout URL and token that an end-user can open to complete payment. Input: amount (major fiat units, e.g. 9.99), currency (ISO 4217, e.g. GBP), label (description), preferred_network (optional), redirect_url (optional). Supported networks: algorand_mainnet, voi_mainnet, hedera_mainnet, stellar_mainnet, base_mainnet, solana_mainnet, tempo_mainnet, arc_mainnet.",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "payment",
        "checkout",
        "hosted",
        "payment-link"
      ],
      "examples": [
        "Create a checkout link for £9.99 (amount: 9.99, currency: GBP)",
        "Create a checkout link for $49.00 on Algorand mainnet"
      ]
    },
    {
      "id": "check-status",
      "name": "Check Payment Status",
      "description": "Poll the payment status of a checkout link. Input: token (the URL slug from create-checkout, e.g. 'uW9MJN-abc123' — NOT the UUID id field). Returns status: active | paid | expired | cancelled.",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "payment",
        "status",
        "polling"
      ],
      "examples": [
        "Check if checkout uW9MJN-abc123 has been paid"
      ]
    },
    {
      "id": "post-twitter-checkout",
      "name": "Post Twitter Checkout",
      "description": "Create a hosted checkout link and post it as a reply to a tweet (or as a new tweet) using the tenant's connected X bot credentials. Input: amount (major fiat units), currency (ISO 4217), tweet_id (optional — reply target), label (optional), preferred_network (optional). Returns checkout_url, token, and tweet_id of the posted reply.",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "payment",
        "checkout",
        "twitter",
        "x",
        "social"
      ],
      "examples": [
        "Reply to tweet 1234567890 with a £9.99 checkout link",
        "Post a $50 payment request as a new tweet via the connected X bot"
      ]
    },
    {
      "id": "agent-trust-bench",
      "name": "Agent Trust Bench",
      "description": "Research environment measuring autonomous AI agent payment decisions under x402. 35 profiles spanning benign, adversarial, multi-turn, and budget-enforcement scenarios. Agents can probe profiles via GET /{profile_id}, refuse via POST /refused/{profile_id}, and declare pre-authorisation via POST /authorised-declaration. Available as an MCP server (bench_mcp_server.py, stdio transport) and via Bazaar discovery at /discovery/resources. Max transaction: $1.00 USDC. No auth required. Research disclosure at /disclosure-policy.",
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ],
      "tags": [
        "research",
        "x402",
        "agent-safety",
        "benchmark",
        "mcp"
      ],
      "examples": [
        "List all bench profiles at agent-trust-bench.algovoi.co.uk/discovery/resources",
        "Probe the 'cheap' profile: GET agent-trust-bench.algovoi.co.uk/cheap",
        "Run all 35 profiles with bench_runner.py --persona policy"
      ]
    }
  ],
  "protocolVersion": "0.3.0",
  "preferredTransport": "HTTP+JSON"
}