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Carbon & Cashmere Open Interest History API
x402
Carbon & Cashmere Open Interest History API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status down (last checked 2026-09-15).
Returns historical open interest (OI) time series and summary stats for a specified cryptocurrency, including total OI in USD and per-exchange breakdowns.
Price / call$0.02
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
Returns a JSON object with the coin identifier, number of days in the series, summary stats (current total OI in USD and percentage change), and a time-series array of daily snapshots each containing a timestamp, total OI in USD, and per-exchange OI values (e.g. Binance).
Example use cases
ETH derivatives positioning monitor
“Grab the open interest history for Ethereum from Carbon & Cashmere — I want to see how OI has trended over the past week and whether the percentage change signals any big moves in derivatives positioning.”
Exchange-level OI breakdown for SOL
“Pull the open interest data for Solana and break it down by exchange — I need to know how much OI is sitting on Binance versus other venues and how the total has shifted recently.”
Crypto OI trend alert setup
“Fetch the historical open interest time series for BTC from Carbon & Cashmere so I can flag any days where total OI in USD spiked or dropped significantly — I want to use this to build a signal around unusual derivatives activity.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/history/oi/%7Bcoin%7DWhen to prefer
Use this endpoint when you need historical open interest data for a specific cryptocurrency, including exchange-level breakdowns and percentage change metrics. Prefer this over generic market data APIs when you need derivatives-focused OI analytics with a structured time series, especially if you are building signals around derivatives positioning or funding dynamics.
Side effects
- Unknown or unsupported coin symbol returns 404 or empty series
- Missing coin path parameter returns 400 or routing error
- Payment not included or invalid x402 payment header returns 402 Payment Required
- Rate limiting may return 429 if too many calls are made quickly
- Network or server errors return 500
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"coin": "BTC",
"days": 7,
"stats": {
"change_pct": 2.1,
"current_total_usd": 111000000000
},
"series": [
{
"ts": "2026-04-11T00:00:00Z",
"total_oi_usd": 108500000000,
"binance_oi_usd": 52000000000
}
]
}
}Tags
x402
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