{"uid":"cap_LbUe4gXof8dNOJ5AJStYL","slug":"api-carbon-cashmere-de-2938f31b","name":"Carbon Cashmere BTC Whale Flow & Mempool Analytics","description":"Get whale movement data — Solana: 12 tracked whale wallets (Wintermute, Kraken, etc.) with SOL moved, exchange inflow/outflow, and largest transactions. BTC: mempool fee trends, congestion levels, hashrate, and block data. Last 24 snapshots. AI agent API for smart money tracking, whale alert monitoring, and on-chain flow analysis.","url":"https://api.carbon-cashmere.de/v1/whale-flow/BTC","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"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"chain":{"type":"string"},"summary":{"type":"object"},"snapshots":{"type":"array"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"unknown","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","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_h6oHlL8H9SH1OgkrA_CTq","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns Bitcoin whale movement data including mempool fee trends, congestion levels, hashrate, block data, and the last 24 snapshots of on-chain flow activity.","exampleAgentPrompt":"Pull me the latest Bitcoin whale flow data — I want to see current mempool fee trends, congestion level, hashrate, and the last 24 snapshots of on-chain inflow and outflow activity.","exampleUseCases":null,"resultDescription":"A JSON object containing the BTC chain identifier, a summary of mempool fee trends, congestion level, hashrate, and block data, plus an array of up to 24 time-series snapshots capturing on-chain flow metrics such as exchange inflows/outflows and major transaction activity.","failureModes":["Payment not provided or invalid x402 payment header returns 402 Payment Required","Network or server error returns 5xx response","Rate limiting may return 429 if called too frequently","Empty or stale snapshot array if no recent BTC block data is available"],"whenToPreferThis":"Use this endpoint when you need real-time or near-real-time Bitcoin-specific on-chain data including mempool conditions, fee trends, hashrate, and block-level metrics. Prefer this over generic crypto price endpoints when the goal is network health monitoring, smart money flow analysis, or mempool fee estimation for transaction timing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:57:46.571Z","isFirstParty":false}