# OwlChart Order Book API

> OwlChart Order Book API is a paid API for AI agents from owlchart.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-17).

Returns aggregated live order book data (bids and asks) for a given cryptocurrency ticker across 34 exchanges

## Facts

- Endpoint: GET https://owlchart.com/api/x402/orderbook?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/owlchart-order-book-api-f1f6eee6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K-Xb96nhIpisZQpgdPL4x

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 owlchart-order-book-api-f1f6eee6
```

Example prompt: Pull the live order book for ETH right now — I want to see the top bids and asks and which exchanges they're sitting on.

## When to prefer this

Choose this endpoint when you need real-time, multi-exchange aggregated order book depth for a cryptocurrency — especially when comparing liquidity across venues like Binance and OKX simultaneously. Prefer it over single-exchange APIs when you want a consolidated market microstructure view. It is ideal for pre-trade analysis, arbitrage detection, and liquidity monitoring at $0.03 per call.

## Known failure modes

- Missing or invalid 'coin' query parameter returns an error — must be a valid ticker like ETH or BTC
- Unknown or unsupported ticker symbols may return empty order book arrays or an error
- Payment failure (x402 USDC payment not processed) results in a 402 response before data is returned
- Rate limits or upstream exchange connectivity issues may cause stale or incomplete data

## How this service works

Live crypto and stock market console: OwlView charts, TBO breakout signals, order books from 34 exchanges, ETF flows, funding, liquidations and Fed odds.

## Output

A JSON object containing the coin ticker plus two arrays: 'bids' and 'asks'. Each entry includes the price (in the coin's native quote currency), the USD size at that level, and the exchange/venue name (e.g. Binance, OKX) — aggregated across up to 34 exchanges.

## 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": [
      "coin"
     ],
     "properties": {
      "coin": {
       "type": "string",
       "description": "Coin ticker, e.g. ETH"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "asks": [
   {
    "usd": 22100000,
    "price": 2295,
    "venue": "okx"
   }
  ],
  "bids": [
   {
    "usd": 18400000,
    "price": 2210,
    "venue": "binance"
   }
  ],
  "coin": "ETH"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/owlchart-order-book-api-f1f6eee6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from owlchart.com](https://www.zero.xyz/host/owlchart.com/llms.txt)