{"resource":"https://agent402.tools/api/a2a-card-fetch","service":"A2A Agent Card fetch","areas":["other"],"answering":true,"http_status":402,"latency_ms":194,"price_usdc":0.005,"buyers_30d":4,"calls_30d":4,"description":"Discover and fetch a site's A2A (Agent2Agent protocol) Agent Card - tries /.well-known/agent-card.json then /.well-known/agent.json (or fetches a direct .json URL as-is) - and validate it against the spec v0.3 structural core. Returns the c","id":"3f412e43c56d","category":"Developer tools and utilities","checked_day":"2026-10-11","page":"https://velliumandco.com/sellers/3f412e43c56d"}