{"uid":"cap_hrpvI9d9YadS5pJnHeqfJ","slug":"blockrun-ai-968745e2","name":"BlockRun.AI Fear & Greed Index History","description":"Pay for the outcome. One endpoint for every model, tool and data source an agent needs — each call priced before it runs, at the best value per dollar. 103 models and 100 data and tool APIs.","url":"https://blockrun.ai/api/v1/surf/market/fear-greed","method":"GET","headers":{},"bodySchema":null,"responseSchema":null,"example":{"request":{"input":{"body":{}}},"response":{"_truncated":true,"_originalSize":244054}},"exampleRequest":{"input":{"body":{}}},"tags":["x402"],"displayCostAmount":"0.0075","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":"$0.0075/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0085","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0085","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm__0rYbP0Ks8hooZ-R_UeKO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0085","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns historical Fear & Greed index data for the cryptocurrency market","exampleAgentPrompt":"Can you pull up the historical Fear & Greed index for the crypto market so I can see how sentiment has shifted over time?","exampleUseCases":null,"resultDescription":"Returns a historical series of Fear & Greed index values for the cryptocurrency market, including sentiment scores and associated timestamps, allowing analysis of how market emotion has trended over time.","failureModes":["Service unavailable or rate limit exceeded (HTTP 429/503)","Payment not processed or insufficient funds (x402 payment required)","Empty or truncated response if data is unavailable for the requested period","Malformed response if upstream data source is down"],"whenToPreferThis":"Use this endpoint when you need historical Fear & Greed index data for the crypto market, especially within a crypto-native analytics stack on blockrun.ai. Prefer this over general sentiment APIs when you want time-series sentiment history tied to cryptocurrency market cycles.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-16T00:53:12.535Z","isFirstParty":false}