{"slug":"agent402-tools-api-farcaster-by-address-5d6002","title":"Reverse-lookup an Ethereum address to its Farcaster account (via verified addres","host":"agent402.tools","method":"POST","resource":"https://agent402.tools/api/farcaster-by-address","category":"market","description":"Reverse-lookup an Ethereum address to its Farcaster account (via verified address). Returns FID, username, display name, bio, follower/following counts, and Warpcast URL, or found=false if the address has not verified on Farcaster. Use to label wallet activity with the owner's Farcaster identity whe","price_listed":0.002,"price_asked":0.002,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":913,"reported_calls_30d":5,"reported_payers_30d":1,"networks":["algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73ktiC1qzkkit8=","eip155:10","eip155:1329","eip155:137","eip155:143","eip155:42161","eip155:42220","eip155:43114","eip155:4663","eip155:8453","solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","stellar:pubnet"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"address":"0xd7029bdea1c17493893aafe29aad69ef892b8ff2"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"address":{"description":"Ethereum address (0x-prefixed 40-hex).","type":"string"}},"required":["address"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"},"output":{"properties":{"example":{"properties":{"address":{"type":"string"},"bio":{"type":"string"},"displayName":{"type":"string"},"fid":{"type":"integer"},"followerCount":{"type":"integer"},"followingCount":{"type":"integer"},"found":{"type":"boolean"},"pfpUrl":{"type":"string"},"source":{"type":"string"},"username":{"type":"string"},"venueUrl":{"type":"string"}},"required":["found","address","fid","username","displayName","pfpUrl","bio","followerCount","followingCount","venueUrl","source"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.002,"price_match":true,"latency_ms":913,"error":null}],"description_full":"Reverse-lookup an Ethereum address to its Farcaster account (via verified address). Returns FID, username, display name, bio, follower/following counts, and Warpcast URL, or found=false if the address has not verified on Farcaster. Use to label wallet activity with the owner's Farcaster identity when ENS is missing.","last_updated":"2026-09-22T16:35:21.844Z","schemes":["exact","upto"]}