{"uid":"cap_XMYlAcnMUw14UtYfoR839","slug":"x402stock-fear-greed-index-history-ca7ae4f2","name":"x402stock Fear & Greed Index History","description":"The full daily history of the US stock Fear & Greed index from 2016 to today, each point a date and 0–100 score. Pass `?days=N` to return only the most recent N days (default: full series). Use for charting sentiment regimes and backtesting against price. Companion to /api/v1/fear-greed (current reading). From x402stock, a market & economic data API (x402, USDC).","url":"https://agents.x402stock.xyz/api/v1/fear-greed/history","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},{"kind":"static","protocol":"mpp","network":"tempo","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MFNBE417rgFFB5Rw6TxSX","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null},{"uid":"pm_-V77rm1gCSXJVpj1Yk5aZ","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x20C000000000000000000000b9537d11c60E8b50","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns historical CNN Fear & Greed Index readings to track market sentiment over time","exampleAgentPrompt":"Pull the historical Fear & Greed Index readings for the past 90 days so I can see how market sentiment has shifted over time.","exampleUseCases":[{"title":"Backtesting sentiment-driven strategy","prompt":"Give me the daily Fear & Greed Index history for the entire year 2023 so I can backtest how market sentiment correlated with S&P 500 returns."},{"title":"Crash period sentiment analysis","prompt":"Show me the Fear & Greed Index readings from October 2022 through March 2023 — I want to see how sentiment evolved during that bear market bottom."},{"title":"Current cycle sentiment trend","prompt":"Fetch the Fear & Greed Index history for the last 6 months so I can chart whether we've been trending toward more fear or greed recently."}],"resultDescription":"Returns a time series of historical Fear & Greed Index readings, each entry including a numeric score (0–100), a sentiment label (Extreme Fear, Fear, Neutral, Greed, Extreme Greed), and a timestamp. Useful for charting sentiment trends, backtesting, and comparing market mood across different periods.","failureModes":["Payment not provided or insufficient USDC — returns 402 Payment Required","Invalid or malformed request body — returns 400 Bad Request","Date range outside available historical data — returns empty result set or 404","Network timeout on upstream data provider — returns 503 Service Unavailable","Requested properties field not recognized — may return partial or empty data"],"whenToPreferThis":"Choose this endpoint when you need time-series sentiment data rather than a single current reading. Ideal for backtesting, trend analysis, or comparing market mood across multiple historical periods. Prefer over current-snapshot endpoints when the user asks about how sentiment has changed, evolved, or trended over any past window.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:43:39.397Z","isFirstParty":false}