AgentCard validator
Check an A2A AgentCard against the spec and against what makes an agent easy to find and call. Free, no sign-up. A domain also checks headers, speed and whether the endpoint answers A2A.
Or paste AgentCard JSON
What it checks
- Required fields for A2A 0.1 to 0.3 cards, endpoint URL safety, duplicate skill ids, auth declarations
- What search and the resolve API match on: description, skills, tags, examples
- Live: well-known path, redirects, Content-Type, CORS, response time
- Live: whether the endpoint answers A2A JSON-RPC (a harmless
tasks/getfor a task that does not exist)
Also available as an API: GET /api/validate?url=… (docs).