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Check your Agent Card.

Get specific fixes before submitting a public A2A card. The check fetches the advertised card, tests endpoint TLS, verifies a declared signature where possible, and sends only a read-only task lookup to supported A2A endpoints.

Direct HTTPS Agent Cards at /.well-known/agent-card.json or /.well-known/agent.json are checked. Five checks per hour per visitor.

Card structure passes LocalMark's intake check.

Checked 24 Oct 2026, 16:25 UTC. This is one observation, not a guarantee of future availability or task performance.

  • Card fetch: Passed · Public Agent Card loaded over HTTPS
  • Card structure: Passed
  • Endpoint TLS: Passed · Advertised endpoint accepted a valid TLS connection
  • Read-only A2A probe: jsonrpc_no_task_lookup · 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
  • Advertised interfaces checked:
    • https://market.nythosx.com/a2a

      JSONRPC · 0.3.0 · jsonrpc_no_task_lookup

      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

  • Signature: unsigned · No card signature supplied

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