{"uid":"cap_Dz3Fl62C3gqwW38QLSIKh","slug":"farcaster-reputation-score-092f6bcb","name":"Farcaster Reputation Score","description":"Deterministic Farcaster social-reputation score from zero to one hundred for a fid, username or address. Combines account age, verified wallets, a primary address, username presence, follower floor and cast activity into a score, a band and per-dimension reasons. Anti-sybil and provenance signal for crypto agents. Reputation indicators, not a guarantee.","url":"https://api.agentstools.dev/farcaster/reputation","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"fid":{"type":"integer","minimum":1,"description":"Farcaster ID (FID), a positive integer"},"address":{"type":"string","description":"Ethereum address to score via its linked FID"},"username":{"type":"string","description":"Farcaster username, without the at-sign"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_P88StII4etEhYQa-3C9V6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a deterministic 0–100 social reputation score for a Farcaster user (by FID, username, or Ethereum address), with a band classification, per-dimension breakdowns, and anti-sybil signals.","exampleAgentPrompt":"Can you pull the Farcaster reputation score for the username 'vitalik' — I want to know their score, band, and why they got scored that way before I let them interact with my agent?","exampleUseCases":null,"resultDescription":"A JSON object containing a numeric reputation score from 0 to 100, a categorical band (e.g. low/medium/high), and per-dimension reason strings covering account age, verified wallets, primary address presence, username presence, follower floor, and cast activity. Designed as an anti-sybil and provenance signal for crypto agents.","failureModes":["No FID/username/address provided — returns 400 or error requiring at least one query parameter","Unknown or non-existent Farcaster username — returns error or zero-score result","Invalid Ethereum address format — returns validation error","FID below minimum (< 1) — rejected by schema validation","Payment not completed (x402) — returns 402 Payment Required","Rate limit exceeded — returns 429 Too Many Requests"],"whenToPreferThis":"Use this endpoint when you need a deterministic, multi-dimensional reputation score for a Farcaster identity — especially in crypto agent workflows requiring anti-sybil checks, provenance validation, or trust gating. Prefer it over generic social metrics when you specifically need Farcaster-native signals (FID, casts, verified wallets) combined into a single normalized score. Also appropriate when you have an Ethereum address and want to resolve its Farcaster reputation indirectly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T01:08:59.342Z","isFirstParty":false}