LocalMark.
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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 25 Oct 2026, 21:37 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: unconfirmed · Protocol response exceeded 16 KiB limit
  • Advertised interfaces checked:
    • https://developer.rhombus.com/

      HTTP+JSON · 0.3.0 · unconfirmed

      Protocol response exceeded 16 KiB limit

  • Signature: unsigned · No card signature supplied

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