# Perp Funding & OI Across Exchanges

> Perp Funding & OI Across Exchanges is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-29).

Returns annualized perpetual funding rates and open interest for a coin across OKX, Bitget, Gate, Kraken Futures, and Hyperliquid, plus the widest long/short funding spread.

## Facts

- Endpoint: GET https://bess-x402.onrender.com/v1/crypto/funding-compare?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/perp-funding-oi-across-exchanges-766cfec6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_er0W_1eaAcvgqPSsAwgh-

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 perp-funding-oi-across-exchanges-766cfec6
```

Example prompt: Show me the annualized perpetual funding rates and open interest for ETH side by side on OKX, Bitget, Gate, Kraken Futures, and Hyperliquid, and tell me where the widest long/short funding spread is.

## When to prefer this

Use this endpoint when you need a multi-exchange, side-by-side view of perpetual funding rates and open interest in a single call, specifically covering OKX, Bitget, Gate, Kraken Futures, and Hyperliquid. It is ideal for funding arbitrage analysis, sentiment/crowding checks, and identifying the best venue to earn or pay funding. Prefer this over single-exchange APIs or general crypto data endpoints when you need cross-venue funding spread comparisons without assembling data yourself.

## Known failure modes

- Unknown or unsupported coin ticker returns an error or empty result
- Exchange API downtime may cause missing data for one or more venues
- Stale funding data if upstream exchange APIs are delayed
- Invalid query parameter format returns a 400-level error
- Rate limits or payment failure ($0.003 USDC per call) may block the request

## How this service works

A coin's perpetual funding rate and open interest on OKX, Bitget, Gate, Kraken Futures and Hyperliquid, annualized side by side, with the widest long/short funding spread. Use for funding arbitrage, crowding and sentiment checks.

## Output

A structured response containing each exchange's annualized perpetual funding rate (long and short sides), open interest in USD or coin terms, and a summary of the widest long/short funding spread — returned as a side-by-side comparison across OKX, Bitget, Gate, Kraken Futures, and Hyperliquid.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "coin": {
       "type": "string",
       "description": "Coin ticker, e.g. BTC, ETH, SOL"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/perp-funding-oi-across-exchanges-766cfec6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bess-x402.onrender.com](https://www.zero.xyz/host/bess-x402.onrender.com/llms.txt)