{"uid":"cap_rwo0pGinqCAbw2aeEaOs_","slug":"speraxos-erc-8004-agent-metadata-lookup-b353e018","name":"SperaxOS ERC-8004 Agent Metadata Lookup","description":"AI-powered DeFi intelligence APIs payable via the x402 HTTP payment protocol. No API key required — pay per request with USDC on Base. Identity-only (SIWX) endpoints are free for wallets with an agentcash identity.","url":"https://chat.sperax.io/api/x402/v1/erc8004/metadata/%7BagentId%7D?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"required":{"type":"string"},"properties":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_T0H_I-_6U90Es7GLhx3wo","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0xD74f5255D557944cf7Dd0E45FF521520002D5748","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves on-chain ERC-8004 metadata for a given DeFi agent identity (agentId) via a pay-per-request x402 endpoint","exampleAgentPrompt":"Can you fetch the ERC-8004 on-chain metadata for agent ID 0xabc123def456 from SperaxOS — I need to see that agent's registered identity and capabilities.","exampleUseCases":[{"title":"Verify DeFi agent identity before interaction","prompt":"Before I let this agent manage any of my funds, pull up its ERC-8004 metadata from SperaxOS for agent ID 0x7f3a9c... — I want to confirm its registered identity and what capabilities it claims."},{"title":"Audit agent registry for a fleet","prompt":"I'm auditing our agent fleet — can you fetch the SperaxOS ERC-8004 metadata records for agent ID 0xd4e5f6 and tell me what identity and profile information is registered on-chain?"},{"title":"Resolve agent profile for DeFi integration","prompt":"We're integrating a new DeFi agent with agent ID 0x1b2c3d into our platform — look up its ERC-8004 metadata on SperaxOS so I can confirm its on-chain profile before whitelisting it."}],"resultDescription":"Returns the ERC-8004 standard metadata record associated with the given agentId, including on-chain agent identity fields, registered capabilities, and any profile attributes stored by SperaxOS for that agent on Base.","failureModes":["agentId not found — agent not registered or wrong ID format returns 404 or empty record","x402 payment failure — insufficient USDC balance or malformed payment header returns 402","invalid agentId format — non-address or malformed path parameter returns 400","network or RPC error reading Base chain data returns 503","agent has no ERC-8004 record deployed — returns empty or null metadata"],"whenToPreferThis":"Use this endpoint when you need to resolve the standardized ERC-8004 on-chain identity and metadata for a specific DeFi agent registered with SperaxOS on Base. Prefer this over generic blockchain explorers when you need structured, AI-intelligence-enriched agent profile data and are willing to pay micro-amounts in USDC via x402 rather than manage API keys.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:31:09.820Z","isFirstParty":false,"canonicalSlug":"speraxos-erc-8004-agent-metadata-lookup-b353e018"}