{"uid":"cap_Fjjl7coMlwj-gFxcaIp3q","slug":"coincap-historical-price-series-asset-slug-d7ea1862","name":"CoinCap Historical Price Series (Asset Slug)","description":"Historical price series for an asset slug (capped data points).","url":"https://rest.coincap.io/v3/agentFriendly/history/ethereum","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":{"enum":["GET","HEAD","DELETE"],"type":"string"},"pathParams":{"type":"object","required":["slug"],"properties":{"slug":{"type":"string"}}},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"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_DP-VqYikxhadn7Gix4SH8","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":"Returns a capped historical price series for a specific cryptocurrency asset identified by its slug (e.g. 'ethereum').","exampleAgentPrompt":"Pull up the historical price series for Ethereum from CoinCap so I can see how its price has moved over time.","exampleUseCases":[{"title":"Crypto price trend analysis","prompt":"Can you get me the historical price data for Ethereum so I can analyze its price trend over time?"},{"title":"Backtesting a trading strategy","prompt":"I need the historical price series for Bitcoin from CoinCap to backtest my trading strategy — fetch it for me."},{"title":"Comparing crypto performance over time","prompt":"Fetch the historical price data for Solana so I can compare how it's performed against other assets I'm tracking."}],"resultDescription":"A capped series of historical price data points for the specified cryptocurrency asset slug, including timestamps and corresponding prices, suitable for charting, analysis, or backtesting.","failureModes":["Invalid or unknown asset slug returns an error or empty response","Rate limiting or payment failure (x402) if USDC payment is not properly handled","Network timeout if the API is temporarily unavailable","Capped data points may not cover the full historical range requested"],"whenToPreferThis":"Use this endpoint when you need historical price data for a specific cryptocurrency by its slug (e.g. 'ethereum', 'bitcoin'). Prefer this over the total market-cap history endpoint when you need per-asset price series rather than aggregate market data. Ideal for charting, backtesting, or trend analysis on individual coins.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:30:29.111Z","isFirstParty":false}