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Carbon & Cashmere Open Interest History API — ETH
x402
Carbon & Cashmere Open Interest History API — ETH is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status down (last checked 2026-09-13).
Returns historical open interest (OI) time-series data for Ethereum, including daily total OI in USD, per-exchange breakdowns, and summary change statistics
Price / call$0.02
Success—
StatusDown
How this service works
Professional crypto market intelligence. Real-time prices, signals, and market scoring.
Output
A JSON object containing the coin identifier (ETH), the requested lookback window in days, summary stats (total OI change percent, current total OI in USD), and a time-series array of daily OI snapshots with timestamps, total OI USD, and per-exchange OI USD (e.g. Binance).
Example use cases
Detect ETH leverage buildup early
“Check the Ethereum open interest data from Carbon & Cashmere for the past 14 days — I want to know if OI has been steadily climbing, which could signal leverage buildup before a potential squeeze.”
Compare ETH OI across exchanges
“Pull the last 30 days of ETH open interest history and break it down by exchange — I want to see which platforms like Binance are driving the most derivatives activity and how their share has shifted over time.”
Weekly ETH derivatives positioning report
“Grab this week's Ethereum open interest data from Carbon & Cashmere and summarize how total OI in USD has moved day by day — I need it for my weekly derivatives positioning report.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/history/oi/ETHWhen to prefer
Use this endpoint when you need historical open interest time-series data specifically for ETH (Ethereum) futures/derivatives markets, particularly when you want daily granularity, per-exchange breakdowns, and change-percentage summaries. Prefer this over generic price endpoints when the analytical goal is derivatives positioning, leverage buildup detection, or OI-driven market signals rather than spot price.
Side effects
- Invalid or unsupported coin symbol returns error or empty series
- Missing payment / insufficient USDC balance triggers 402 Payment Required
- Rate limit exceeded returns 429 Too Many Requests
- Network timeout if upstream exchange data is unavailable
- Malformed query parameters return 400 Bad Request
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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