# x402-datashop Crypto Perpetuals Funding-Rate Arbitrage Screener

> x402-datashop Crypto Perpetuals Funding-Rate Arbitrage Screener is a paid API for AI agents from x402-datashop-production.up.railway.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Screens cross-venue funding-rate arbitrage opportunities for crypto perpetuals, identifying the best venue to short and long each symbol by annualized funding spread and open interest.

## Facts

- Endpoint: GET https://x402-datashop-production.up.railway.app/v1/derivs/funding-arb
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-datashop-crypto-perpetuals-funding-rate-arbitrage-screener-d31ab5b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7brbUAjVu1KZU8EopdcrQ

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 x402-datashop-crypto-perpetuals-funding-rate-arbitrage-screener-d31ab5b0
```

Example prompt: Show me the best cross-venue funding rate arbitrage opportunities right now for BTC, ETH, SOL, and AVAX — I want to see which exchange to short and which to long, ranked by the gross APR spread.

## When to prefer this

Use this endpoint when you need a quick, ranked, cross-venue funding rate arbitrage screen for crypto perpetuals without building your own multi-exchange data pipeline. Best for informational screening of which symbol-venue pair offers the widest gross APR spread; not suitable for live execution decisions as fees and slippage are excluded.

## Known failure modes

- More than 12 symbols requested — returns error or truncates list
- Unknown or unsupported symbol provided — may be omitted from results
- Upstream venue data unavailable — partial results or error
- Rate limit or payment failure — 402 response requiring USDC payment
- Network timeout fetching multi-venue data — may return stale cache or error

## How this service works

Cross-venue funding-rate arbitrage screener for crypto perpetuals: for each symbol, identifies the venue to SHORT (highest annualized funding) and the venue to LONG (lowest), with the gross APR spread and per-leg open interest in USD, ranked by spread. Query: ?symbols=BTC,ETH,... (max 12, sensible default list). JSON, ~30s cache. Excludes fees/slippage; informational only.

## Output

A ranked JSON list of symbols, each with the recommended short venue (highest annualized funding), recommended long venue (lowest annualized funding), gross APR spread between them, and per-leg open interest in USD. Results are cached for ~30 seconds and exclude fees and slippage.

## 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",
     "properties": {
      "symbols": {
       "type": "string",
       "default": "BTC,ETH,SOL,XRP,DOGE,AVAX,LINK,LTC",
       "description": "Comma-separated base assets to scan (max 12)"
      }
     }
    }
   },
   "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/x402-datashop-crypto-perpetuals-funding-rate-arbitrage-screener-d31ab5b0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-datashop-production.up.railway.app](https://www.zero.xyz/host/x402-datashop-production.up.railway.app/llms.txt)