# Agent Data API — Cross-Venue Crypto Spread

> Agent Data API — Cross-Venue Crypto Spread is a paid API for AI agents from 168.231.82.195.sslip.io, paid per call via x402, $0.002/call, status down (last checked 2026-09-15).

Returns the best bid/ask prices and arbitrage spread for a given crypto symbol across Binance, Coinbase, Kraken, and OKX in a single normalized call.

## Facts

- Endpoint: GET https://168.231.82.195.sslip.io/spread
- Price: $0.002/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-data-api-cross-venue-crypto-spread-80c1ec23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_NTckaXu2vFKKnY3NwuiZo

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 agent-data-api-cross-venue-crypto-spread-80c1ec23
```

Example prompt: What's the best bid and ask for BTC right now, and is there any arbitrage spread worth noting across Binance, Coinbase, Kraken, and OKX?

## When to prefer this

Use this endpoint when you need a single unified view of cross-exchange bid/ask prices and arbitrage spread for a specific crypto symbol without having to call multiple exchange APIs separately. Ideal for trading agents, arbitrage detection, and best-execution routing when you care about spread comparison across Binance, Coinbase, Kraken, and OKX simultaneously. Prefer over single-exchange APIs when cross-venue normalization and arbitrage signal matter.

## Known failure modes

- Invalid or unsupported symbol returns an error or empty result
- One or more upstream exchanges (Binance/Coinbase/Kraken/OKX) temporarily unavailable, leading to partial data
- Symbol provided in wrong format (e.g. 'BTCUSDT' vs 'BTC') may return no results
- Payment not settled via x402/USDC results in 402 Payment Required response
- Rate limiting or network timeout on the aggregation backend

## How this service works

Pay-per-call data utilities for AI agents (no API key, settle USDC on Base via x402). WEB: GET /audit?url= → structured site signals; GET /extract?url= → clean readable extraction. CRYPTO (multi-source, one call, cleaned & normalized): GET /snapshot?ids= → per-coin price+market+funding+sentiment merged from CoinGecko/Binance/F&G; GET /spread?symbol= → cross-venue best bid/ask & arb spread across Binance/Coinbase/Kraken/OKX; GET /funding → all perp funding rates, annualized APR, sorted extremes; GET /defi → DeFi macro (total TVL, top chains, stablecoin supply & 24h delta); GET /pulse → composite market-regime read (Fear&Greed + dominance + mcap delta + BTC funding → signal).

## Output

A JSON object containing the best bid and ask prices for the requested symbol aggregated across Binance, Coinbase, Kraken, and OKX, along with the cross-venue arbitrage spread and individual venue-level quotes — all cleaned and normalized in a single response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "properties": {
      "symbol": {
       "type": "string",
       "example": "BTC"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "result": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-data-api-cross-venue-crypto-spread-80c1ec23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 168.231.82.195.sslip.io](https://www.zero.xyz/host/168.231.82.195.sslip.io/llms.txt)