{"uid":"cap_-6r6l2oP2BDCRlM-nRM7G","slug":"coincap-asset-market-cap-history-4da27224","name":"CoinCap Asset Market-Cap History","description":"Historical market-cap series for an asset slug (capped data points).","url":"https://rest.coincap.io/v3/agentFriendly/asset_mcap_history/bitcoin","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_o_7EukqKPTFx_PK2hcccS","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 historical time-series of market capitalization data points for a specific cryptocurrency asset identified by its CoinCap slug.","exampleAgentPrompt":"Pull the historical market-cap series for bitcoin from CoinCap so I can see how its total valuation has changed over time.","exampleUseCases":[{"title":"Crypto portfolio valuation over time","prompt":"Can you grab the historical market cap data for ethereum from CoinCap? I want to see how its total valuation has trended so I can understand its growth trajectory."},{"title":"Research report on Bitcoin dominance","prompt":"I'm writing a report on Bitcoin's market dominance — can you fetch bitcoin's historical market cap series from CoinCap so I can chart how it has changed?"},{"title":"Comparing asset maturity for investment decision","prompt":"I'm deciding between investing in solana versus cardano — can you pull the historical market cap history for solana from CoinCap so I can see how established it is by valuation?"}],"resultDescription":"Returns a capped series of historical market capitalization data points for the specified asset slug, each containing a timestamp and the corresponding market cap value in USD, allowing analysis of how the asset's total market valuation has changed over time.","failureModes":["Invalid or unknown asset slug returns an error or empty result","Rate limiting or payment failure results in a 402 or 429 response","Network timeouts for slow responses","Capped data points may not cover the full historical range requested","Slug casing or formatting mismatch may cause lookup failure"],"whenToPreferThis":"Use this endpoint when you specifically need historical market capitalization data for a single cryptocurrency asset identified by its CoinCap slug. Prefer this over general price history endpoints when total market valuation (rather than per-unit price) is the metric of interest. It is ideal for trend analysis, charting market cap growth, or comparing an asset's historical valuation footprint.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:39:03.244Z","isFirstParty":false}