{"uid":"cap_VUcYOO_ah57QsapAc_5xo","slug":"speraxos-erc-8004-agent-search-api-40858577","name":"SperaxOS ERC-8004 Agent Search API","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/agents/search?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_TSZj73KuU0vAa2iG7ZS9z","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":"Search for ERC-8004 compliant AI agents registered on the SperaxOS DeFi intelligence platform, payable via x402 USDC micropayments on Base","exampleAgentPrompt":"Search the SperaxOS agent registry for ERC-8004 agents that specialize in yield optimization on Base — show me their capabilities and metadata.","exampleUseCases":[{"title":"Discover yield optimization agents","prompt":"Find me ERC-8004 AI agents on SperaxOS that are specialized in yield farming or liquidity optimization on Base — I want to see what agents are available and what they can do."},{"title":"Build multi-agent DeFi pipeline","prompt":"I'm building an automated DeFi workflow and need to find registered SperaxOS agents that handle on-chain swaps or rebalancing — search the ERC-8004 agent registry and list their properties."},{"title":"Audit available DeFi agent ecosystem","prompt":"Give me a snapshot of all ERC-8004 compliant agents registered on SperaxOS so I can evaluate what autonomous DeFi capabilities are available on the platform right now."}],"resultDescription":"Returns a list of ERC-8004 compliant AI agents registered on the SperaxOS platform, including their metadata, capabilities, on-chain properties, and any relevant DeFi specializations. Each result represents a discoverable agent that can be further queried or invoked.","failureModes":["Insufficient USDC balance for x402 micropayment returns 402 Payment Required","Invalid or malformed query parameters return 400 Bad Request","No agents match the given search criteria returns empty result set","Network or Base chain connectivity issues may cause timeouts","Unrecognized property filters silently ignored or return error"],"whenToPreferThis":"Choose this endpoint when you need to discover or enumerate AI agents registered under the ERC-8004 standard on the SperaxOS platform, particularly for DeFi-focused agent workflows on Base. Prefer this over generic agent directories when you specifically need on-chain DeFi agents payable via x402 USDC micropayments with no API key friction.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T18:45:07.971Z","isFirstParty":false,"canonicalSlug":"speraxos-erc-8004-agent-search-api-40858577"}