{"uid":"cap_ZQFWWOEhcTIRUUXrTcT_D","slug":"preflight-farcaster-counterparty-identity-check-d0cd65c3","name":"PreFlight Farcaster Counterparty Identity Check","description":"Pre-trade & pre-sign checks for autonomous agents: everything an agent verifies BEFORE signing a transaction — token due diligence, calldata red-flag decoding, oracle freshness, holder concentration, bridge routing with executable calldata, cross-venue perp funding, gas and price sanity checks. EVM chains: Ethereum, Base, Arbitrum, Optimism.","url":"https://meryol-agenticmarket-x402.hf.space/farcaster/%7Bquery%7D","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"bio":"Working on Farcaster","fid":3,"input":"dwr","notes":[],"pfp_url":"https://...","username":"dwr","display_name":"Dan Romero","verifications":["0x..."],"follower_count":60000,"custody_address":"0x...","following_count":120}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_7F-kBgf66lQ3FnEeHGwB8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up a Farcaster user profile by username or FID, returning identity, social graph stats, and verified wallet addresses for pre-trade counterparty due diligence.","exampleAgentPrompt":"Before I send any tokens, look up the Farcaster profile for username 'dwr' — I need their verified wallet addresses, custody address, FID, and follower count to confirm this is a real, established account.","exampleUseCases":null,"resultDescription":"Returns a JSON object with the user's FID, username, display name, bio, profile picture URL, follower count, following count, custody address, and an array of verified on-chain wallet addresses. Notes array may contain flags or warnings.","failureModes":["Username or FID not found on Farcaster — returns empty or 404-style response","Farcaster API rate limit or upstream outage — returns 5xx error","Malformed query parameter — may return empty result or error","User exists but has no verified addresses — verifications array is empty","Payment not processed — x402 payment required error before data is returned"],"whenToPreferThis":"Use this endpoint when you need to resolve a Farcaster social identity to on-chain wallet addresses, verify that a counterparty is a real Farcaster user with social graph credibility, or perform pre-trade identity due diligence on someone you encountered on Farcaster. Prefer over raw on-chain lookups when you have a username rather than an address.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:30:02.201Z","isFirstParty":false}