{"uid":"cap_0u8CLZoF6BKFxo51e0Fm_","slug":"crypto-fear-greed-index-9ae0a176","name":"Crypto Fear & Greed Index","description":"The Crypto Fear & Greed Index: today's 0–100 sentiment score with its classification, plus the last 8 days for trend context. Sentiment blends volatility, momentum, social media, dominance and trends — a useful contrarian signal agents can cite with a number. Use this when an agent needs to market sentiment, live from alternative.me.","url":"https://agentstoolshub.com/api/v1/live/crypto-fear-greed?utm_source=zero.xyz","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"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"days":{"type":"number","description":"Trend window (days)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_LgdxOD-6654aFum1psrve","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","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 (0–100) with classification and up to 8 days of historical trend data, sourced live from alternative.me.","exampleAgentPrompt":"What's the current crypto fear and greed index score, and how has sentiment trended over the past 8 days?","exampleUseCases":[{"title":"Contrarian trading signal check","prompt":"Before I make any crypto trades today, what's the fear and greed index sitting at and what's the classification — fear, greed, extreme greed?"},{"title":"Weekly sentiment trend report","prompt":"Pull the crypto fear and greed index for the last 8 days so I can see how market sentiment has shifted this week."},{"title":"Market mood context for a portfolio update","prompt":"I'm writing a quick note for my investors — what's today's crypto fear and greed score and how would you describe the current market mood?"}],"resultDescription":"Returns today's Fear & Greed Index value (0–100) with a text classification (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), plus up to 8 days of prior daily scores and classifications for trend analysis.","failureModes":["Upstream alternative.me API unavailable — returns error or stale data","Invalid 'days' parameter (non-numeric or out of range) — may return error or default behavior","Network timeout if alternative.me is slow to respond","Payment failure if x402 micropayment is not completed — endpoint returns 402"],"whenToPreferThis":"Choose this endpoint when an agent needs a quick, live, single-number summary of overall crypto market sentiment with a short historical trend window. It is ideal for contrarian analysis, daily market briefings, or contextualizing trading decisions without needing to process raw market data.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T12:36:10.834Z","isFirstParty":false,"canonicalSlug":"crypto-fear-greed-index-9ae0a176"}