{"uid":"cap_kAe4cTVmXg9K2c4rJWLgu","slug":"fear-greed-index-lookup-112c24e4","name":"Fear & Greed Index Lookup","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/fear-greed?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":[],"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0005","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":"$0.0005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_06VgEsh5nuNPnYg1nURP3","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the current Crypto Fear & Greed Index score and sentiment classification for the market.","exampleAgentPrompt":"What's the current crypto Fear & Greed Index score — is the market in fear or greed mode right now?","exampleUseCases":[{"title":"Morning crypto sentiment briefing","prompt":"Before I check my portfolio, can you pull the current Fear & Greed Index so I know whether the market is in extreme fear or greed today?"},{"title":"Automated trading signal check","prompt":"I need to know if the Fear & Greed Index is currently below 25 (extreme fear) before deciding whether to buy into Bitcoin — can you check that for me?"},{"title":"Market sentiment newsletter insert","prompt":"For my weekly crypto newsletter I'm writing today, can you grab the live Fear & Greed Index number and sentiment label so I can include it?"}],"resultDescription":"Returns a numeric Fear & Greed Index score (typically 0–100) along with a sentiment label such as 'Extreme Fear', 'Fear', 'Neutral', 'Greed', or 'Extreme Greed', reflecting current crypto market investor sentiment.","failureModes":["Payment not processed — 402 response if USDC payment header is missing or insufficient","Empty or malformed POST body may return a validation error","Upstream data source unavailable — index may be stale or endpoint may return 5xx","Network timeout if self-hosted inference server is under load"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call crypto market sentiment check without signing up for a data provider account. It is ideal for agents that occasionally need the Fear & Greed Index without committing to a subscription, and for crypto-native workflows that can pay in USDC via x402.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:37:23.448Z","isFirstParty":false,"canonicalSlug":"fear-greed-index-lookup-112c24e4"}