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.
Card could not be fetched.
Checked 28 Oct 2026, 16:55 UTC. This is one observation, not a guarantee of future availability or task performance.
- Card fetch: Failed · Card hostname could not be resolved (DNS lookup failed)
- Card structure: Not run