{"uid":"cap_6WCHJTnE_Y3n5zNqcwyHb","slug":"api-web3identity-com-77ea496b","name":"Crypto Fear & Greed Index","description":"Crypto Fear & Greed Index - market sentiment indicator","url":"https://api.web3identity.com/api/market/fear-greed","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"value":{"type":"number"},"timestamp":{"type":"string"},"classification":{"type":"string"}}}}}}},"responseSchema":null,"example":{"request":{"input":{"type":"http","method":"GET","queryParams":{}}},"response":{"value":13,"cached":false,"source":"alternative_me","latencyMs":74,"timestamp":"1781308800","classification":"Extreme Fear"}},"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_sqFucxNHsKKuFatjiCB81","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","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 value, classification, and timestamp as a market sentiment indicator","exampleAgentPrompt":"What is the current Crypto Fear & Greed Index — give me the numeric score and whether the market is in fear, greed, or somewhere in between?","exampleUseCases":null,"resultDescription":"Returns a JSON object with a numeric index value (0–100), a sentiment classification string (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and a timestamp indicating when the reading was taken.","failureModes":["API unavailable or rate-limited returning 402/503","Stale or delayed data if upstream sentiment feed is lagging","Empty or malformed JSON response if data pipeline fails","Payment required error if x402 payment not provided"],"whenToPreferThis":"Use this endpoint when you need a quick, single-value sentiment snapshot of the overall crypto market. Ideal for trading bots, market dashboards, or any agent that needs to make decisions conditioned on current market mood without requiring historical series or detailed breakdown.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:54:20.062Z","isFirstParty":false}