{"$schema":"https://agent2agent.dev/schema/agent-card.json","name":"HashA2A Intelligence Oracle","version":"0.2.0","description":"Agent-to-Agent data marketplace. Sells verified multi-oracle prices, prediction market intelligence, cross-oracle arbitrage signals, and deep research to AI agents. Pay per query via USDC (x402/AP2) or HBAR (HIP-991). Fully A2A-compatible with task lifecycle management, JSON-RPC 2.0, and SSE streaming.","url":"https://github.com/ymiydev-prog/HashA2A","documentation":"https://github.com/ymiydev-prog/HashA2A/blob/main/README.md","provider":{"organization":"HashA2A","url":"https://github.com/ymiydev-prog/HashA2A"},"capabilities":{"streaming":true,"push_notifications":false,"task_lifecycle":true,"context_passing":true,"artifact_storage":true,"batch_processing":false,"payment_protocols":["x402","HIP-991","AP2"]},"interfaces":[{"type":"a2a","url":"https://hasha2a.com/api/v1/a2a/rpc","protocol_binding":"JSONRPC","protocol_version":"0.3","description":"A2A JSON-RPC 2.0 endpoint for task management. Supports message/send, tasks/get, tasks/list, tasks/cancel.","methods":["message/send","tasks/get","tasks/list","tasks/cancel"]},{"type":"a2a-stream","url":"https://hasha2a.com/api/v1/a2a/rpc/stream","protocol_binding":"JSONRPC+SSE","protocol_version":"0.3","description":"A2A JSON-RPC 2.0 with SSE streaming. Supports message/stream for real-time task progress.","methods":["message/stream"],"streaming":true},{"type":"mcp","url":"https://hasha2a.com/mcp","protocol_binding":"MCP","protocol_version":"1.0","description":"MCP Streamable HTTP server with 10 tools"}],"authentication":{"schemes":[{"type":"jwt","in":"header","name":"Authorization","format":"Bearer {token}","description":"Ephemeral JWT tokens for stateless authentication. Tokens expire in 5 minutes."},{"type":"none","description":"All queries are payment-gated via x402 (USDC) or HIP-991 (HBAR). No API key required."}]},"endpoints":{"task_submission":{"url":"https://hasha2a.com/api/v1/tasks","method":"POST","contentType":"application/json"},"task_status":{"url":"https://hasha2a.com/api/v1/tasks/{task_id}","method":"GET"},"health":{"url":"https://hasha2a.com/api/v1/agent/health","method":"GET"},"profile":{"url":"https://hasha2a.com/api/v1/agent/profile","method":"GET"},"mcp":{"url":"https://hasha2a.com/mcp","method":"POST","protocol":"MCP Streamable HTTP"},"token":{"url":"https://hasha2a.com/api/v1/auth/token","method":"POST","description":"Request ephemeral JWT token for authenticated requests"}},"payment":{"protocols":["x402","HIP-991","AP2"],"currencies":["USDC","HBAR"],"networks":["eip155:8453","hedera:mainnet"],"mandates":{"supported":true,"types":["cart","intent"],"description":"AP2 cryptographic mandates for autonomous agent spending. Agents can pre-authorize spending limits."}},"security":{"endpoint_auth":["jwt","none"],"message_integrity":"SHA-256 proofs via HCS audit topic","ephemeral_tokens_ttl":300,"audit_trail":true},"discovery":{"protocols":["mcp","a2a","rest"],"endpoints":{"agent_card":"/.well-known/agent.json","mcp":"https://hasha2a.com/mcp","health":"https://hasha2a.com/api/v1/agent/health","profile":"https://hasha2a.com/api/v1/agent/profile"},"hol_registry_topic":"0.0.29640405"},"context":{"supported":true,"max_history":50,"summary_truncation":500,"forking":true}}