# Crypto Funding Rate & Open Interest Data

> Crypto Funding Rate & Open Interest Data is a paid API for AI agents from vmi3089643.contaboserver.net, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Returns live perpetual futures funding data for a crypto symbol, including mark price, index price, open interest, current funding rate, next funding time, annualized funding percentage, and long/short account ratio.

## Facts

- Endpoint: GET https://vmi3089643.contaboserver.net/v1/funding/%7Bsymbol%7D
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-funding-rate-open-interest-data-8074adc6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oMyRz5DwiZ2lhtX-3MbvV

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 crypto-funding-rate-open-interest-data-8074adc6
```

Example prompt: What's the current funding rate, open interest, and long/short ratio for BTCUSDT right now? I want to know if the market is leaning heavily long and how much annualized funding costs are.

## When to prefer this

Choose this endpoint when you need real-time perpetual futures funding data — particularly funding rates, open interest, and long/short ratios — for Binance-listed USDT pairs, and you are operating in a pay-per-call x402/USDC payment context. Prefer over exchange APIs directly when you need a simple, agent-friendly REST call with micropayment settlement.

## Known failure modes

- Invalid or unsupported symbol returns an error or empty response
- Payment not processed via x402/USDC results in 402 Payment Required
- Binance API downtime may cause stale or missing data
- Symbol format mismatch (e.g. BTC-USDT vs BTCUSDT) may return no results
- Rate limiting if called too frequently without valid payment

## How this service works

Pay-per-call crypto technical analysis for AI agents (x402, USDC on Base). Daily trend regime, Donchian levels, ATR stops, signals and backtests computed with the code of a live trend-following bot from Binance spot klines.

## Output

A JSON object with the symbol, mark price, index price, open interest (in coin and USD), current funding rate, next funding timestamp, annualized funding percentage, and long/short account ratio for the requested perpetual futures pair.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "symbol": "BTCUSDT",
  "markPrice": 77236.9,
  "indexPrice": 77268.9,
  "openInterest": 103431.6,
  "lastFundingRate": 0.000053,
  "nextFundingTime": "2026-09-12T08:00:00.000Z",
  "openInterestUsd": 7989000000,
  "fundingAnnualizedPct": 5.8,
  "longShortAccountRatio": 1.6
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-funding-rate-open-interest-data-8074adc6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vmi3089643.contaboserver.net](https://www.zero.xyz/host/vmi3089643.contaboserver.net/llms.txt)