VouchSpec Agent Skill Evidence

{
  "name": "VouchSpec Agent Skill Evidence",
  "url": "https://vouchspec.plyrium.com/api/vouchspec/v1/a2a",
  "description": "Agent-only discovery for fresh, exact-commit Agent Skill validation. Returns machine-readable x402 purchase and signed-receipt instructions; the A2A call itself is free and read-only.",
  "version": "0.1.0",
  "documentationUrl": "https://vouchspec.plyrium.com/vouchspec",
  "iconUrl": null,
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "text/plain",
    "application/json"
  ],
  "skills": [
    {
      "id": "discover_vouchspec_validation",
      "name": "Discover exact-commit Agent Skill validation",
      "description": "Returns current request schema, x402 USDC payment instructions, delivery expectations, signed receipt verification, cache, sharing, and invalidation rules. It does not perform paid validation.",
      "tags": [
        "agent-skills",
        "exact-commit",
        "evidence",
        "x402",
        "usdc",
        "base"
      ],
      "examples": [
        "How can my agent buy fresh evidence for an exact public Agent Skill commit?",
        "Return VouchSpec x402 request and receipt verification instructions."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "text/plain",
        "application/json"
      ]
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "protocolVersion": "0.3.0",
  "provider": {
    "organization": "Plyrium",
    "url": "https://vouchspec.plyrium.com/"
  }
}