{"uid":"cap_HjV8x9RdMLw8S9DuUkzdf","slug":"booaip-fear-greed-index-70b4e197","name":"booAIP Fear & Greed Index","description":"Current crypto Fear & Greed Index with 1-day change (alternative.me).","url":"https://booaip.vercel.app/api/feargreed","method":"GET","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":{"required":[],"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"pathParams":{"type":"object"}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"value":{"type":"number"},"change1d":{"type":"number"},"classification":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"value":55,"change1d":3,"classification":"Greed"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_wNkz-SAG1rZNPlu7KL1o2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","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, 1-day change, and sentiment classification (e.g. Greed, Fear)","exampleAgentPrompt":"What's the current crypto Fear and Greed Index — give me the score, how it changed since yesterday, and whether we're in fear or greed territory right now?","exampleUseCases":null,"resultDescription":"Returns a JSON object with: 'value' (integer 0-100 representing the index), 'change1d' (integer showing 24-hour change), and 'classification' (string like 'Greed', 'Fear', 'Extreme Fear', 'Extreme Greed') describing overall crypto market sentiment.","failureModes":["Payment not included or insufficient USDC — returns 402 Payment Required","Upstream data source unavailable — returns 5xx error","Invalid or expired x402 payment token — returns 401 or 402","Network timeout from Vercel cold start — returns 504"],"whenToPreferThis":"Use this endpoint when an AI agent needs real-time crypto market sentiment data priced affordably at $0.005 USDC per call, payable via x402 on Base, without requiring an API key subscription — ideal for pay-per-use agent workflows needing the Fear & Greed Index.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:42:41.503Z","isFirstParty":false}