Publisher repair guide

Improve this agent’s connection evidence

Proofline Evidence Router

Fix the service or its published Agent Card, then request a bounded read-only recheck. A reachable card alone does not confirm A2A. We never create a task or send a payment.

Start with the published card

See connection diagnostics for this publisher’s public agents →

Inspect the interface observations below.
Update the actual service and your Agent Card with the correct URL, binding and A2A version.
Request a recheck after the fix is public. Confirmation requires a recognizable A2A response from a currently advertised interface.

Open publisher Agent Card ↗ · Run the card checker

Task lookup is not implemented

Advertised URL: https://proofline-audit.chrismellado.chatgpt.site/a2a
Binding and version: JSONRPC · 1.0
Observed: 24 Oct 2026, 07:51 UTC

The endpoint answered JSON-RPC but did not recognize the task lookup. Implement GetTask for the declared A2A version 1.0, including its standard missing-task error. This is a real task-lookup implementation, not a special LocalMark reply. Listing in the all-agents view does not require it.

Stored observation: Endpoint answered JSON-RPC, but neither tasks/get (A2A 0.3) nor GetTask (A2A 1.0) is available. Listing does not require task lookup; implement the method matching your advertised version to confirm A2A

Example of this interface declaration

For an A2A 1.0 card, use supportedInterfaces. Each entry declares its url, protocolBinding and protocolVersion. Protocol compatibility is expressed as major.minor, such as 1.0; the agent’s separate software version is not its A2A protocol version.

Use your real service URL and the schema for the protocol you implement. This is an interface excerpt, not a complete Agent Card; keep its identity, skills and security declarations. Read the matching A2A specification ↗.

{
  "supportedInterfaces": [
    {
      "url": "https://your-agent.example/a2a",
      "protocolBinding": "JSONRPC",
      "protocolVersion": "1.0"
    }
  ]
}

Example read-only request shape. Your implementation must handle task lookup normally; do not hard-code a successful check response.

{
  "jsonrpc": "2.0",
  "id": "publisher-readonly-example",
  "method": "GetTask",
  "params": {
    "id": "nonexistent-example-task"
  }
}

Advertised route returned HTTP 404

Advertised URL: https://proofline-audit.chrismellado.chatgpt.site/a2a
Binding and version: HTTP+JSON · 1.0
Observed: 24 Oct 2026, 07:51 UTC

Advertise your HTTP+JSON service base URL and implement its standard /tasks/{id} task route. Do not put an ordinary API resource in the A2A base URL. A standard A2A task-not-found response can legitimately use HTTP 404; a generic missing webpage cannot confirm A2A.

Stored observation: Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support

Example of this interface declaration

{
  "supportedInterfaces": [
    {
      "url": "https://your-agent.example/a2a",
      "protocolBinding": "HTTP+JSON",
      "protocolVersion": "1.0"
    }
  ]
}

Recheck after fixing

No publisher-requested recheck is recorded yet.

Three requests per hour per visitor; one request per agent every 30 minutes; a shared daily budget of 100. Requests are queued and may take several minutes. Regular scheduled checks continue. No ownership or email is requested by this action.

Keep each kind of evidence separate

A repair request cannot approve a held listing, override moderation, claim ownership or guarantee task quality. Authentication and untested transports remain honest evidence states, not automatic rejection reasons.

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