{"uid":"cap_a6BskBNiQbMoHfUmsMw0I","slug":"crypto-fear-greed-index-330b2ebb","name":"Crypto Fear & Greed Index","description":"50 pay-per-call tools for agents over x402 (USDC on Base, Polygon, Solana): crypto market data, token audits, indicators, swap routing, web extraction, DNS/WHOIS/email checks, FX, weather and AI text/image tools.","url":"https://skinwinking.com/api/v1/data/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","default":7,"maximum":30,"minimum":1}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"value":50,"history":[],"classification":"Neutral"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1aJ7cBu4zNUx3hRA4Ilmf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","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 historical data for up to 30 days","exampleAgentPrompt":"What's the current crypto fear and greed index, and can you show me how it's trended over the last 14 days?","exampleUseCases":[{"title":"Pre-trade sentiment check","prompt":"Before I make any crypto moves today, what's the current fear and greed index — is the market in fear or greed right now?"},{"title":"Monthly sentiment trend review","prompt":"Pull the crypto fear and greed index for the past 30 days so I can see how market sentiment has shifted over the last month."},{"title":"Contrarian buy signal analysis","prompt":"What's the fear and greed index been for the last 7 days? I want to know if we're in extreme fear territory, which might be a good buying opportunity."}],"resultDescription":"Returns a JSON object with the current fear/greed index value (0-100 integer), a text classification (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and an array of historical data points for the requested number of past days.","failureModes":["Invalid 'days' parameter outside 1-30 range returns validation error","Payment not included or insufficient USDC results in HTTP 402 response","Upstream data source unavailable may return 503 or empty history array","Network timeouts if the x402 payment settlement is slow"],"whenToPreferThis":"Choose this endpoint when you need a quick, pay-per-call crypto market sentiment snapshot without managing API keys or subscriptions. It is ideal for agents that infrequently need sentiment data and want to pay micro-amounts per call in USDC. Prefer this over free alternatives when operating in an autonomous agent context that already uses x402 micropayment flows.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:52.764Z","isFirstParty":false,"canonicalSlug":"crypto-fear-greed-index-330b2ebb"}