{"uid":"cap_yjNjzgrtd-9IzOeijsg5U","slug":"worlddata402-crypto-fear-greed-index-c9d99ae8","name":"WorldData402 Crypto Fear & Greed Index","description":"Global market, government and reference data for AI agents. Pay-per-call over x402 (USDC on Base mainnet).","url":"https://worlddata402.worlddata402.workers.dev/v1/crypto/fear-greed?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"integer"}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/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_qXXMhUYpoH060rAMkxuky","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 and historical Crypto Fear & Greed Index values indicating overall market sentiment","exampleAgentPrompt":"What's the current crypto fear and greed index? Show me the last 7 data points so I can see the recent trend.","exampleUseCases":[{"title":"Real-time trading sentiment check","prompt":"Before I make any moves today, what's the current crypto fear and greed index score and what sentiment zone is the market in right now?"},{"title":"Historical sentiment trend analysis","prompt":"Pull the last 30 days of crypto fear and greed index readings so I can see how market sentiment has been trending lately."},{"title":"Automated DCA trigger alert","prompt":"Check today's crypto fear and greed score — I want to know if we're in extreme fear territory below 25, because that's when I usually buy more."}],"resultDescription":"Returns one or more data points from the Crypto Fear & Greed Index, each containing a numeric score (0–100), a sentiment classification label (e.g. Extreme Fear, Fear, Neutral, Greed, Extreme Greed), and a timestamp. When limit is specified, returns that many historical records ordered from most recent.","failureModes":["Invalid or non-integer limit parameter returns a 400 error","Upstream data source unavailable causes a 503 or empty response","Payment not completed over x402 results in a 402 Payment Required response","Requesting more historical data points than available may return fewer records than requested"],"whenToPreferThis":"Choose this endpoint when you need real-time or recent historical Crypto Fear & Greed Index data as a market sentiment signal, particularly within an AI agent workflow that can handle x402 micropayments in USDC on Base. Prefer it over scraping alternative.me directly when you need a reliable, pay-per-call API without API key management. Ideal for trading bots, portfolio dashboards, or sentiment-based alerting systems.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T18:42:01.230Z","isFirstParty":false,"canonicalSlug":"worlddata402-crypto-fear-greed-index-c9d99ae8"}