{"uid":"cap_rh1L6afKgSv0NJIMeyflv","slug":"crypto-fear-greed-index-2664e224","name":"Crypto Fear & Greed Index","description":"The (most) everything API: 575+ pay-per-call endpoints for AI agents — ground-truth data, a full AI gateway, and agent infrastructure (storage, queues, watchers). USDC via x402, no signup, no API keys, and upto billing: pay actual usage, not the quote.","url":"https://2s.io/api/crypto/fear-greed?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":{"request":{"properties":"value"},"response":{"data":{"ok":true,"items":[{"value":22,"timestamp":"2026-06-17T00:00:00.000Z","classification":"Extreme Fear"}],"total":1,"source":{"url":"https://alternative.me/crypto/fear-and-greed-index/","license":"Free public API; attribute alternative.me.","provider":"alternative.me — Crypto Fear & Greed Index"}},"meta":{"cost":{"usd":0.0012,"tier":0},"caller":"x402","version":null,"endpoint":"crypto.fear-greed","settlement":{"txHash":"0x206f1a8e6701631285eb4f2e2fbe44d720f96b209c6b508d238b8dce29857ffd","network":"eip155:8453","success":true}}}},"exampleRequest":{"properties":"value"},"tags":["x402"],"displayCostAmount":"0.0012","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":"$0.0012/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_pfoKj3cuLMfbi2kD_Vthj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","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 from alternative.me","exampleAgentPrompt":"What's the current crypto fear and greed index — is the market in fear or greed right now, and what's the score?","exampleUseCases":null,"resultDescription":"Returns a JSON object with ok status, an items array containing the current index value (0-100 integer), ISO timestamp, and classification string (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), total count, and source attribution to alternative.me.","failureModes":["Data provider (alternative.me) unavailable — upstream fetch failure","Payment not received — 402 response before data is returned","Malformed or missing response from upstream source"],"whenToPreferThis":"Use this endpoint when an agent needs a real-time, ground-truth numeric sentiment signal for the crypto market without managing API keys or subscriptions. Prefer over scraping alternative.me directly or building your own index aggregation. Ideal for trading bots, market dashboards, or any workflow that needs a single authoritative fear/greed data point on demand.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:44:00.349Z","isFirstParty":false,"canonicalSlug":"crypto-fear-greed-index-2664e224"}