{"uid":"cap_59HnxJSz60cefRz9kC3BO","slug":"arch-tools-crypto-fear-greed-index-c4dd68bc","name":"Arch Tools — Crypto Fear & Greed Index","description":"Arch Tools — crypto-fear-greed","url":"https://archtools.dev/v1/tools/crypto-fear-greed","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"limit":{"type":"integer","default":1,"description":"Number of historical entries (1 = current)"}}},"responseSchema":null,"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_AKqjllq52Pd7YFNyLSTmv","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":"Fetches the current or historical Crypto Fear & Greed Index values to gauge overall cryptocurrency market sentiment","exampleAgentPrompt":"What's the current crypto fear and greed index? Pull the latest reading so I know whether the market is in fear or greed right now.","exampleUseCases":[{"title":"Daily crypto market sentiment check","prompt":"What's the crypto fear and greed index today? I want to know if the market is currently fearful, neutral, or greedy before I decide whether to rebalance my portfolio."},{"title":"Historical sentiment trend analysis","prompt":"Can you pull the last 30 days of crypto fear and greed index readings? I want to see how market sentiment has trended over the past month."},{"title":"Automated trading signal integration","prompt":"Get me the current crypto fear and greed index value — my trading bot uses it to decide whether to enter or exit positions, so I need the most recent number and its label."}],"resultDescription":"Returns one or more Fear & Greed Index entries, each containing a numeric score (0–100), a sentiment label (e.g. 'Extreme Fear', 'Fear', 'Neutral', 'Greed', 'Extreme Greed'), and a timestamp. The number of entries returned corresponds to the 'limit' parameter, with limit=1 returning only the current reading.","failureModes":["Invalid limit value (non-integer or out-of-range) may return a 400 error","Upstream data provider unavailability may cause delayed or missing index data","Payment failure over x402/USDC may result in 402 response before data is returned","Requesting more historical entries than are available may return fewer results than requested"],"whenToPreferThis":"Choose this endpoint when you need a quick, paid-per-call lookup of the Crypto Fear & Greed Index without managing your own data pipeline or API keys. It is ideal for AI agents that need real-time or recent historical market sentiment in a single lightweight call, especially within workflows already using USDC micropayments on Base. Prefer alternatives if you need very deep historical data, raw on-chain sentiment signals, or free access to the index.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:48:03.957Z","isFirstParty":false}