# Funding Rate Arbitrage Scanner

> Funding Rate Arbitrage Scanner is a paid API for AI agents from funding-arb.api.klymax402.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).

Scans and returns funding rate arbitrage opportunities across perpetual futures exchanges for one or all assets

## Facts

- Endpoint: GET https://funding-arb.api.klymax402.com/api/scan
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/funding-arb-api-klymax402-com-e267fbdf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SLQvLcQjzr_AQmemBMvHP

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 funding-arb-api-klymax402-com-e267fbdf
```

Example prompt: Scan for funding rate arbitrage opportunities on BTC perpetuals across all exchanges and show me where the biggest spreads are right now.

## When to prefer this

Use this endpoint when you need to identify delta-neutral funding rate arbitrage opportunities across multiple perpetual futures exchanges in real time. Prefer this over manually checking individual exchange funding rates when you want to scan across all assets or a specific symbol at once.

## Known failure modes

- Invalid or unrecognized symbol returns an error or empty results
- Exchange data unavailable results in partial or stale results
- Rate limit exceeded returns 429 error
- Service downtime returns 5xx error
- No arbitrage opportunities found returns empty list

## How this service works

Scan funding rate arbitrage opportunities across perpetual exchanges

## Output

A list of funding rate arbitrage opportunities across perpetual exchanges, including the asset, the exchanges involved, their respective funding rates, and the spread/differential that represents the arbitrage opportunity.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "symbol": "BTC"
  }
 }
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Filter by asset symbol (e.g. BTC, ETH, SOL). Optional — scans all assets if omitted."
      }
     }
    }
   },
   "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/funding-arb-api-klymax402-com-e267fbdf/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from funding-arb.api.klymax402.com](https://www.zero.xyz/host/funding-arb.api.klymax402.com/llms.txt)