Vizier

{
  "name": "Vizier",
  "description": "Evaluates proposed agent actions against supplied authority and deterministic policy. Not a factuality verifier; no live source retrieval. REVIEW requires a human decision before the external action.",
  "provider": {
    "organization": "Vassiliy Lakhonin",
    "url": "https://vassiliylakhonin.github.io/"
  },
  "supportedInterfaces": [
    {
      "url": "https://vizier.vassiliy-lakhonin.workers.dev/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "version": "0.1.0",
  "documentationUrl": "https://vizier.vassiliy-lakhonin.workers.dev/docs",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "extendedAgentCard": false
  },
  "securitySchemes": {
    "bearerAuth": {
      "httpAuthSecurityScheme": {
        "scheme": "Bearer",
        "description": "Integration credential required for enforcement results. Anonymous A2A calls are evaluation-only and cannot return ALLOW."
      }
    }
  },
  "securityRequirements": [
    {},
    {
      "bearerAuth": []
    }
  ],
  "defaultInputModes": [
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "verify_agent_action",
      "name": "Verify Agent Action",
      "description": "Evaluate whether a proposed agent action is allowed by delegated authority, policy, target, and context.",
      "tags": [
        "authorization",
        "policy",
        "agent-actions"
      ],
      "examples": [
        "Verify a procurement action against an amount limit and target allowlist."
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "evaluate_delegated_authority",
      "name": "Evaluate Delegated Authority",
      "description": "Determine whether an agent has sufficient delegated authority for a requested action.",
      "tags": [
        "delegation",
        "authority",
        "least-privilege"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "generate_verification_receipt",
      "name": "Generate Verification Receipt",
      "description": "Return an auditable machine-readable receipt for an authorization decision.",
      "tags": [
        "receipt",
        "audit",
        "verification"
      ],
      "inputModes": [
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "signatures": [
    {
      "protected": "eyJhbGciOiJFUzI1NiIsImprdSI6Imh0dHBzOi8vdml6aWVyLnZhc3NpbGl5LWxha2hvbmluLndvcmtlcnMuZGV2Ly53ZWxsLWtub3duL2p3a3MuanNvbiIsImtpZCI6InZpemllci0yMDI2LTA4LTEyLTQwNzkzMjQxIiwidHlwIjoiSk9TRSJ9",
      "signature": "TWIuUHoh3IhxaYn8nbVjfA7DDhkroMseq7_O7KSqrg6_oTAJYf8S6-hJHWrlV9cZpdt55TZ9dN9lmLP0iPJjpA"
    }
  ]
}