# Carbon & Cashmere Derivatives Analytics – BTC

> Carbon & Cashmere Derivatives Analytics – BTC 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 real-time Bitcoin derivatives market intelligence including open interest regime, funding rate z-scores, and basis analytics for professional crypto market analysis.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/derivatives-analytics/BTC
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-derivatives-analytics-btc-47f77b59
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CBHGTwdxcQGG-nrtqRMjr

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability carbon-cashmere-derivatives-analytics-btc-47f77b59
```

Example prompt: Pull the current derivatives analytics for BTC — I want to know the open interest regime, funding rate z-score, and whether the market is in an elevated long bias right now.

## When to prefer this

Use this endpoint when you need structured Bitcoin derivatives market signals — specifically open interest regime classification, funding rate analytics with z-scores, and basis data — in a single lightweight call. Prefer over generic price APIs when derivatives sentiment and regime context are required. Best for agents building market condition summaries, risk alerts, or trading signal pipelines focused on BTC perpetuals.

## Known failure modes

- Symbol not supported — only BTC confirmed in path
- Missing or invalid API key / x402 payment not processed — 402 Payment Required
- Rate limit exceeded — too many calls in period
- Upstream data source unavailable — stale or null fields returned (e.g. gex: null, basis fields null)
- Network timeout on real-time data fetch

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

A JSON object containing: open interest data (regime label like 'accumulation', current USD value, 24h delta percent), funding rate data (current annualized percent, 30d z-score, 7d momentum, regime string like 'elevated_long_bias'), basis analytics (trend, current bps, 90d percentile), GEX value, symbol, and a meta disclaimer noting data is informational only.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "oi": {
   "regime": "accumulation",
   "current_usd": 14447145202.29,
   "delta_24h_pct": 6.87
  },
  "gex": null,
  "_meta": {
   "disclaimer": "Informational research data only — not investment advice."
  },
  "basis": {
   "trend": null,
   "current_bps": null,
   "percentile_90d": null
  },
  "symbol": "BTC",
  "funding": {
   "z_30d": 1.8,
   "regime": "elevated_long_bias",
   "momentum_7d": 0.23,
   "current_annualized_pct": 12.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-derivatives-analytics-btc-47f77b59/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)