Google Sign-In Claude Agent

{
  "name": "Google Sign-In Claude Agent",
  "url": "https://authenticated-llm-agent-anthropic.getvda.ai/a2a/",
  "description": "Google Sign-In Claude Agent: composes anthropic + google-auth-oauthlib + mcp \u2014 llm-client, oauth-oidc, agent-protocol via A2A + MCP.",
  "version": "0.1.1",
  "documentationUrl": "https://authenticated-llm-agent-anthropic.getvda.ai/governance.md",
  "iconUrl": null,
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "llm-client",
      "name": "Llm Client",
      "description": "llm client capability provided by anthropic.",
      "tags": [
        "anthropic"
      ],
      "examples": [
        "Use the llm-client capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "oauth-oidc",
      "name": "Oauth Oidc",
      "description": "oauth oidc capability provided by google-auth-oauthlib.",
      "tags": [
        "google-auth-oauthlib"
      ],
      "examples": [
        "Use the oauth-oidc capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "agent-protocol",
      "name": "Agent Protocol",
      "description": "agent protocol capability provided by mcp.",
      "tags": [
        "mcp"
      ],
      "examples": [
        "Use the agent-protocol capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "selftest",
      "name": "Self-test (free verification)",
      "description": "FREE \u2014 no payment, no API key, no signup. Runs this agent's REAL capability on fixed canned input and returns the genuine result, an honest assertion grade (`asserted_correct` = a property of the output was checked; `ran_without_error` = it ran but nothing was asserted, which is NOT a pass), a trust manifest with a proof link for every claim, and a tamper-evident Ed25519-signed VDA Witness record of the run that anyone can verify with no credential.",
      "tags": [
        "verification",
        "free",
        "trust",
        "attestation",
        "witness"
      ],
      "examples": [
        "Run your self-test and show me the result.",
        "Prove you do what your card claims.",
        "Give me the signed Witness record for your last self-test."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "protocolVersion": "0.3.0",
  "provider": {
    "organization": "VDA / GOSCE",
    "url": "https://getvda.ai/"
  }
}