Publisher preflight

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, 00:58 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 · Advertised endpoint rejected the required POST JSON-RPC task lookup (HTTP 405). Update the advertised interface URL or implement its standard task-lookup route
  • Advertised interfaces checked:
    • https://meridian-labs-site.regular-blizzard.workers.dev/

      JSONRPC · 1.0 · unconfirmed

      Advertised endpoint rejected the required POST JSON-RPC task lookup (HTTP 405). Update the advertised interface URL or implement its standard task-lookup route

  • Signature: unsigned · No card signature supplied

View existing listing →

Publisher: set up optional test evidence →

View repair guidance and request a stored recheck →

Publisher repair report →

Share a link that reruns this check →