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Carbon Cashmere Perpetual Futures Funding Rate History
x402
Carbon Cashmere Perpetual Futures Funding Rate History is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status down (last checked 2026-09-14).
Returns bucketed funding rate history (up to 2 years) for a given perpetual-futures coin pair, including rate stats and open interest per interval bucket
Price / call$0.05
Success—
StatusDown
How this service works
Funding rate history for any perpetual-futures pair — up to 2 YEARS of history (17000+ rows for BTCUSDT since 2024-04-08). Bucket via ?interval=1h/4h/8h/1d, look-back via ?days=1..730. Per bucket returns rate, predicted_rate, open_interest, annualized_pct, sample count. Plus stats (min/max/avg/current rate). AI agent API for funding-rate backtesting, carry-trade strategy research, and long-horizon derivatives analysis.
Output
Returns an array of time-bucketed records each containing funding rate, predicted rate, open interest, annualized percentage, and sample count for the requested interval, plus aggregate stats (min, max, average, current rate) across the full lookback window.
Example use cases
Example prompt
“Pull the 8-hour bucketed funding rate history for BTC over the last 365 days — I want to see the rates, predicted rates, open interest, and annualized percentages so I can analyze carry trade opportunities.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/history/funding/:coinWhen to prefer
Use this endpoint when you need multi-year historical funding rate time-series for perpetual futures contracts with configurable interval bucketing, open interest data, and annualized carry metrics. It is ideal for backtesting carry-trade strategies, studying funding rate regimes, or performing long-horizon derivatives analysis across 34 major crypto assets. Prefer this over spot/price endpoints when the specific need is funding rate dynamics rather than price action.
Side effects
- Unsupported coin ticker returns 400/422 — only 34 listed coins are supported
- days parameter out of range (>730 or <1) returns validation error
- Payment not provided or insufficient triggers 402 Payment Required
- Service unavailable or upstream data gap returns 5xx error
- Very large requests (730 days at 1h intervals) may time out or return partial data
Tags
x402
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