> Use the canonical URL for citations. For the complete Predict API documentation index, fetch https://docs.staging.trypredict.com/llms.txt.

# Get order book

POST https://api.hyperliquid-testnet.xyz/info
Content-Type: application/json

Returns a full L2 snapshot for one outcome side. Replace the local book
atomically. The response is not a sequenced delta.

Reference: https://docs.staging.trypredict.com/api-reference/trading-reads/market-data/get-order-book

## Servers

- `https://api.hyperliquid-testnet.xyz` (Testnet, default)
- `https://api.hyperliquid.xyz` (Mainnet)

## Request

### Body (application/json)

This endpoint expects a L2BookRequest.

- `type` ("l2Book", required)
- `coin` (string, required) — Side-specific market-data coin in `#<10 * hl_id + side>` form.
- `nSigFigs` (integer, optional) — Optional price aggregation precision from 2 through 5 significant figures.
- `mantissa` (integer, optional) — Optional aggregation mantissa. Valid values are 1, 2, and 5.

## Response

### 200

- `coin` (string, required)
- `time` (long, required)
- `levels` (list of list of BookLevel, required) — Two arrays, bids first and asks second.

## Types

### BookLevel

- `px` (string, required) — Price.
- `sz` (string, required) — Aggregate size at this price.
- `n` (integer, required) — Number of orders at this price.

## Examples

**Request**

```json
{
  "type": "l2Book",
  "coin": "#144840"
}
```

**Response**

```json
{
  "coin": "#144840",
  "time": 1787586400000,
  "levels": [
    [
      {
        "px": "0.54",
        "sz": "100",
        "n": 2
      }
    ],
    [
      {
        "px": "0.56",
        "sz": "80",
        "n": 1
      }
    ]
  ]
}
```

**SDK Code**

```python
import requests

url = "https://api.hyperliquid-testnet.xyz/info"

payload = {
    "type": "l2Book",
    "coin": "#144840"
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.hyperliquid-testnet.xyz/info';
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: '{"type":"l2Book","coin":"#144840"}'
};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.hyperliquid-testnet.xyz/info"

	payload := strings.NewReader("{\n  \"type\": \"l2Book\",\n  \"coin\": \"#144840\"\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.hyperliquid-testnet.xyz/info")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"type\": \"l2Book\",\n  \"coin\": \"#144840\"\n}"

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.post("https://api.hyperliquid-testnet.xyz/info")
  .header("Content-Type", "application/json")
  .body("{\n  \"type\": \"l2Book\",\n  \"coin\": \"#144840\"\n}")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://api.hyperliquid-testnet.xyz/info', [
  'body' => '{
  "type": "l2Book",
  "coin": "#144840"
}',
  'headers' => [
    'Content-Type' => 'application/json',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.hyperliquid-testnet.xyz/info");
var request = new RestRequest(Method.POST);
request.AddHeader("Content-Type", "application/json");
request.AddParameter("application/json", "{\n  \"type\": \"l2Book\",\n  \"coin\": \"#144840\"\n}", ParameterType.RequestBody);
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["Content-Type": "application/json"]
let parameters = [
  "type": "l2Book",
  "coin": "#144840"
] as [String : Any]

let postData = JSONSerialization.data(withJSONObject: parameters, options: [])

let request = NSMutableURLRequest(url: NSURL(string: "https://api.hyperliquid-testnet.xyz/info")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "POST"
request.allHTTPHeaderFields = headers
request.httpBody = postData as Data

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```