A2A Fieldcheck

{
  "name": "A2A Fieldcheck",
  "description": "Beta behavioral checks for A2A 1.0 agents over JSON-RPC or HTTP+JSON, with private JSON/JUnit evidence. 20 free check credits per workspace via explicit API onboarding. The public beta uses a temporary development tunnel with no uptime guarantee. Paid checkout is disabled. No wallet keys or automatic spending required.",
  "version": "0.2.2",
  "supportedInterfaces": [
    {
      "url": "https://a2a-fieldcheck.radislabus.workers.dev/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ],
  "documentationUrl": "https://a2a-fieldcheck.radislabus.workers.dev/agents",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "application/json",
    "text/plain"
  ],
  "defaultOutputModes": [
    "application/json",
    "text/plain"
  ],
  "securitySchemes": {
    "workspaceKey": {
      "httpAuthSecurityScheme": {
        "scheme": "Bearer"
      }
    }
  },
  "securityRequirements": [
    {
      "schemes": {
        "workspaceKey": {
          "list": []
        }
      }
    }
  ],
  "skills": [
    {
      "id": "check-a2a-behavior",
      "name": "Check A2A agent behavior",
      "description": "Submit a bounded check contract with target origin, message and expected text or JSON value. Receive pass/fail, latency and JUnit. One credit per completed check; infrastructure errors refund it. This is a behavioral check, not protocol certification.",
      "tags": [
        "a2a",
        "regression-testing",
        "agent-reliability",
        "junit",
        "monitoring"
      ],
      "examples": [
        "{\"command\": \"check\", \"contract\": {\"name\": \"Try a real A2A exchange\", \"url\": \"demo:healthy\"}}"
      ]
    }
  ]
}