{"uid":"cap_l4pI9prj9yAsZoS8wAzTV","slug":"carbon-cashmere-funding-rate-history-api-sol-6c387a6c","name":"Carbon & Cashmere Funding Rate History API – SOL","description":"Professional crypto market intelligence. Real-time prices, signals, and market scoring.","url":"https://api.carbon-cashmere.de/v1/history/funding/SOL","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"days":30,"stats":{"samples":90,"avg_rate":0.00008,"max_rate":0.0003,"min_rate":-0.0002,"current_rate":0.0001},"series":[{"ts":"2026-04-01T00:00:00Z","rate":0.0001,"annualized_pct":10.95}],"symbol":"BTCUSDT","interval":"8h"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.02/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"}]},"paymentMethods":[{"uid":"pm_QsFhzklELeAT6iFcQwiG6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns historical funding rate time-series and statistics for Solana (SOL) perpetual futures, including average, max, min, current rates, and annualized percentage.","exampleAgentPrompt":"Pull the last 30 days of SOL perpetual funding rate history from Carbon & Cashmere — I want to see the average, max, min, current rate, and the full 8-hour interval time series with annualized percentages.","exampleUseCases":null,"resultDescription":"Returns a JSON object containing: the number of days covered, aggregate statistics (sample count, average rate, max rate, min rate, current rate), and a time-series array with timestamps, per-period rates, and annualized percentage for each 8-hour interval — all specific to the SOL perpetual futures market.","failureModes":["Symbol not supported or incorrectly specified — returns error or empty dataset","Insufficient funding rate history available for the requested period","Upstream exchange data unavailable — may return stale or partial data","Payment not processed (x402 protocol failure) — request rejected before data is returned","Rate limit exceeded — too many calls in a short window"],"whenToPreferThis":"Use this endpoint when you need historical funding rate data specifically for SOL perpetual futures, including statistical summaries and time-series breakdowns. Prefer it over generic market data APIs when you need annualized funding rate calculations, mean statistics, or want to assess carry cost and market sentiment for SOL perps over a configurable lookback window.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:33:41.188Z","isFirstParty":false}