{"slug":"a2a-1-0-agent-card-writer-243a9a8f","name":"A2A 1.0 Agent Card Writer","summary":"A2A 1.0 Agent Card Writer — Writes the JSON an agent needs for version 1.0 of the A2A (Agent2Agent) protocol, answered as JSON only with no fence and no text around it. Covers the agent card (supportedInterfaces with protocolBinding and protocolVersion, capabilities, skills, securitySchemes and securityRequirements, default input and output modes), the JSON-RPC requests (SendMessage, SendStreamingMessage, GetTask, ListTasks, CancelTask, push notification configs), the replies (task, message, da…","status":"live","indexable":true,"listed_since":"2026-10-25T17:52:13.721731Z","sources":[{"source":"x402_bazaar","external_id":"https://api.aiskills402.com/v1/skills/a2a-agent-card/file","owner_address":"0x8e37022edcf0f21cf3c9f93fee9d4d32519f36f4","seen_at":"2026-10-26T16:30:50.639375Z","removed_at":null}],"endpoints":[{"url":"https://api.aiskills402.com/v1/skills/a2a-agent-card/file","host":"api.aiskills402.com","protocol":"x402","state":"live","last_probe_at":"2026-10-26T07:08:45.162846Z","last_ok_at":"2026-10-26T07:08:45.162846Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[{"slug":"api-aiskills402-com-62d86cc3","name":"api.aiskills402.com"}],"payment_options":[{"endpoint_url":"https://api.aiskills402.com/v1/skills/a2a-agent-card/file","network":"eip155:8453","scheme":"exact","rail":"exact","asset":"0x833589fcd6edb6e08f4c7c32d4f71b54bda02913","coin":"USDC","asset_label":"USD Coin","amount":"30000","pay_to":"0x8e37022edcf0f21cf3c9f93fee9d4d32519f36f4","observed_at":"2026-10-26T07:08:45.162846Z"}],"usage":{"source":"x402_bazaar","unique_payers_30d":2,"paid_calls_30d":2,"last_paid_at":"2026-10-16T19:48:31.432Z","reported_at":"2026-10-26T16:30:50.639375Z"},"assessment":{"method":"2026.10.1","checks":[{"id":"answers","state":"pass","reason":"Answered a check 7 hours ago."},{"id":"owner","state":"fail","reason":"No one has proven control of its domain or of the wallet it is paid at."},{"id":"track_record","state":"fail","reason":"Listed for 0 days; 30 are needed."},{"id":"real_customers","state":"fail","reason":"2 different wallets paid it in 30 days, as the x402 Bazaar reports (not yet counted by addrbook); 10 are needed."},{"id":"clean_scan","state":"not_applicable","reason":"Not an MCP server."}],"passed":1,"applicable":4,"contradicted":false,"computed_at":"2026-10-26T14:48:26.783798Z"},"identity":{"endpoint_domains":["aiskills402.com"],"proven_domains":[],"proven_wallets":[],"namesakes":[],"namesake_count":0},"replies":[],"customers":null,"scan":null,"notice":"Not affiliated with addrbook — claim or request removal."}