{"uid":"cap_jvjyXuBNbfIm35uz9SjUh","slug":"scriptmasterlabs-fear-greed-index-api-dbcd60ab","name":"ScriptMasterLabs Fear & Greed Index API","description":"Pay-per-call crypto, RWA, federal, SEC, and compliance APIs. Settled in USDC on Base via x402. Hyphen routes only (e.g. /x402/rwa-aggregates, /x402/gas-tracker).","url":"https://acp-x402-scriptmasterlabs.onrender.com/x402/fear-greed-index","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":{"type":"string"},"queryParams":{"type":"object","properties":{"limit":{"type":"integer","default":1,"example":1}}}}},"output":{"properties":{"example":{}}}}},"responseSchema":{"example":{}},"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_CuAtOPo1DwALpH84CsoJ6","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 (and optionally historical) crypto Fear & Greed Index score, settled via x402 micropayment in USDC on Base.","exampleAgentPrompt":"What's the current crypto Fear & Greed Index score — just give me the latest reading so I can see whether the market is in fear or greed territory right now?","exampleUseCases":[{"title":"Pre-trade sentiment check","prompt":"Before I buy any crypto today, can you pull the current Fear & Greed Index so I know whether the market is panicking or euphoric?"},{"title":"Daily market sentiment report","prompt":"Every morning include the latest Fear & Greed Index score in my crypto briefing so I can track whether sentiment is shifting toward fear or greed."},{"title":"Historical sentiment trend review","prompt":"Get me the last 5 Fear & Greed Index readings so I can see how market sentiment has moved over the past few days."}],"resultDescription":"Returns one or more Fear & Greed Index data points, each including a numeric score (0–100), a sentiment label (e.g. 'Extreme Fear', 'Greed', 'Extreme Greed'), and a timestamp. The number of results is controlled by the 'limit' query parameter (default 1).","failureModes":["Payment not settled — 402 response if x402 USDC payment on Base is not properly attached","Invalid limit parameter — non-integer or out-of-range value may return a 400 error","Upstream data unavailable — if the underlying Fear & Greed data source is down, may return a 503 or empty result","Rate limits or server cold start on Render free tier may cause intermittent 504 timeouts"],"whenToPreferThis":"Choose this endpoint when you need a quick, micropayment-gated (no API key setup) crypto Fear & Greed Index reading via the x402 protocol settled in USDC on Base. It is ideal for AI agents that already have x402 payment capability and want a low-cost, per-call sentiment signal without managing API subscriptions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:55:03.638Z","isFirstParty":false}