{"name":"agent-card-resolve","description":"Resolves an ERC-8004 agentId to its on-chain owner, agentURI, and agent card JSON. Pass an agentId (uint256 on Base) — returns the owner address, the agentURI from the Identity Registry, and the resolved agent card JSON (set fetch_card=false to skip the HTTP follow-up). Reads from Base mainnet Identity Registry 0x8004A169FB4a3325136EB29fA0ceB6D2e539a432 via a static eth_call (no gas, no wallet); useful for agents discovering peers in the A2A ecosystem. Use it as an agent card resolver, ERC-8004 Identity Registry lookup, Trustless Agents query, A2A identity check, agent.json fetch, or on-chain agent metadata reader.","price":"$0.005","method":"POST","input_schema":{"properties":{"agent_id":{"type":["integer","string"],"description":"ERC-8004 agentId on Base — non-negative integer. Accepted as number or decimal string."},"fetch_card":{"type":"boolean","description":"If true (default), also fetches the resolved agentURI and embeds the JSON agent card in the response. Set false to skip the HTTP fetch."}},"required":["agent_id"]},"input_example":{"agent_id":47167},"output_example":{"agent_id":47167,"network":"eip155:8453","identity_registry":"0x8004A169FB4a3325136EB29fA0ceB6D2e539a432","owner":"0x6c0752c09e7f6fa6526fcdf40e456a159ebb5621","agent_uri":"https://x402-deployer.x402-deployer.workers.dev/agent.json","agent_card":{"type":"https://eips.ethereum.org/EIPS/eip-8004#registration-v1","name":"agentutility_ai"},"agent_card_fetch_error":null,"rpc_used":"https://base.publicnode.com","source":"ERC-8004 Identity Registry (Base)","attribution":"Resolved against ERC-8004 (https://eips.ethereum.org/EIPS/eip-8004)."},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}