# Crypto Arbitrage Spread Data API

> Crypto Arbitrage Spread Data API is a paid API for AI agents from wallet-intel-api-production-3ec7.up.railway.app, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Returns real-time arbitrage spread data for a given crypto token across multiple exchanges, identifying the best buy/sell pair and profit opportunity.

## Facts

- Endpoint: GET https://wallet-intel-api-production-3ec7.up.railway.app/api/v1/arb-spreads/%7Bsymbol%7D
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-arbitrage-spread-data-api-79f38575
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rO4WyalP3ddU2ED9dF8Yg

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-arbitrage-spread-data-api-79f38575
```

Example prompt: What's the current arbitrage spread for ETH — show me the best buy and sell prices across exchanges and how much profit I could make?

## When to prefer this

Use this endpoint when you need real-time cross-exchange price spread and arbitrage opportunity data for a specific crypto token. Ideal for trading bots, opportunity scanners, or any workflow where you need to know which exchange offers the best buy/sell price and how much profit an arb trade could yield. Prefer over generic price APIs when the spread and profit calculation matter, not just the spot price.

## Known failure modes

- Unknown or unsupported token symbol returns an error or empty result
- Exchange data unavailable due to upstream feed outage reduces exchange count
- Rate limiting or payment failure returns 402 Payment Required
- Symbol missing from query returns a 400 Bad Request
- Very low-liquidity tokens may have only 1-2 exchanges responding, making spread unreliable

## How this service works

Provides real-time arbitrage spread data for a given crypto symbol across exchanges and venues to identify trading opportunities.

## Output

Returns a list of prices for the requested token sorted low to high across all responding exchanges, along with the best buy/sell pair, the spread value, an estimated profit calculation, a count of exchanges covered, and a timestamp.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Token symbol to check (BTC, ETH, SOL, DOGE, PEPE, etc)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "prices": {
       "type": "array",
       "description": "Price on each exchange, sorted low to high"
      },
      "spread": {
       "type": "object",
       "description": "Best buy/sell pair with spread and profit calculation"
      },
      "symbol": {
       "type": "string"
      },
      "timestamp": {
       "type": "string"
      },
      "exchangesCovered": {
       "type": "number",
       "description": "Number of exchanges that responded"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-arbitrage-spread-data-api-79f38575/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wallet-intel-api-production-3ec7.up.railway.app](https://www.zero.xyz/host/wallet-intel-api-production-3ec7.up.railway.app/llms.txt)