{"uid":"cap_tx_uJvIwyDBj8GTqGDAMA","slug":"crypto-fear-greed-index-55b29561","name":"Crypto Fear & Greed Index","description":"The Crypto Fear & Greed Index (0 extreme fear to 100 extreme greed) for today, with up to a year of daily history. Use as a market-sentiment signal for trading, newsletters or answering how the crypto market feels.","url":"https://bess-x402.onrender.com/v1/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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"days":{"type":"integer","description":"Days of history (1-365)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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_M9puYqtcAvwv6yfc2PNIP","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":"Returns the current Crypto Fear & Greed Index (0–100) plus up to 365 days of daily historical values as a market-sentiment signal.","exampleAgentPrompt":"What's today's Crypto Fear & Greed Index score, and can you show me the daily readings for the past 30 days so I can see how sentiment has shifted?","exampleUseCases":[{"title":"Daily crypto newsletter sentiment signal","prompt":"Pull today's Crypto Fear & Greed Index and the last 7 days of history — I want to include the current sentiment score and a week-over-week trend in my daily crypto newsletter."},{"title":"Automated trading sentiment filter","prompt":"Before placing my trade, check the current Crypto Fear & Greed Index — if it's below 25 (extreme fear) or above 75 (extreme greed), flag it so I can reconsider my position."},{"title":"90-day sentiment trend analysis","prompt":"Fetch the Crypto Fear & Greed Index for the past 90 days so I can chart how market sentiment has evolved alongside Bitcoin's price over that period."}],"resultDescription":"Returns the current day's Fear & Greed Index score (0 = extreme fear, 100 = extreme greed) with a sentiment label, and optionally an array of daily historical index values (date + score + label) going back up to 365 days.","failureModes":["Invalid 'days' value outside 1–365 range returns a validation error","Service unavailable on the hosted render.com instance causes a 503 response","Payment not fulfilled (x402 protocol) results in a 402 Payment Required response","Requesting future dates or data beyond available history may return fewer records than requested"],"whenToPreferThis":"Use this endpoint when you need a ready-made, normalized 0–100 sentiment index for the overall crypto market — particularly for newsletters, trading filters, or dashboards that need a quick market-mood signal without computing sentiment from raw data. It is more convenient than aggregating social media or on-chain signals yourself, and its daily-history feature makes it suitable for trend analysis over any window up to one year.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T07:12:45.154Z","isFirstParty":false,"canonicalSlug":"crypto-fear-greed-index-55b29561"}