---
title: "📊 Get Orderbook"
description: >-
  Fetch live bid/ask order book depth for a market outcome using the Forkast SDK
  to assess liquidity and optimal price levels.
---

> **For AI agents:** the complete documentation index is at [llms.txt](/llms.txt). Append `.md` to any page URL for its markdown version.

Fetches the order book for a specific market outcome. It provides the live bid/ask depth for a specific outcome, which is useful for showing market liquidity and choosing the best price level before placing orders.

```typescript
import { ForkastSDK, Network } from "@forkastgg/client";

const sdk = new ForkastSDK(Network.MAINNET, "YOUR_API_KEY");
const marketService = sdk.getMarketService();

const orderBook = await marketService.getOrderBook(123, 1, 0);
```

**Parameters**

| **Field** | **Type** | **Required** | **Description** |
| ----------- | -------- | ------------ | ------------------------------ |
| marketId    | number   | Yes          | Market identifier              |
| outcomeId   | number   | Yes          | Trade side (0 = buy, 1 = sell) |
| outcomeType | number   | Yes          | Outcome type                   |

**Response**

```typescript
interface OrderBook {
  asks: Array<{ price: number; size: number }>;
  bids: Array<{ price: number; size: number }>;
}

// Example
/*
{
  "asks": [{ "price": 0.75, "size": 100 }],
  "bids": [{ "price": 0.68, "size": 80 }]
}
*/
```

Key Fields

| **Field** | **Description** |
| --------- | ------------------------------------------- |
| `asks`    | Sell offers with price and available shares |
| `bids`    | Buy offers with price and available shares  |