curl --request POST \
  --url https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook \
  --header 'Authorization: Bearer <token>' \
  --header 'Connect-Protocol-Version: <connect-protocol-version>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "market": {
    "marketId": "<string>"
  },
  "tickSize": 123,
  "sizeInUsd": true,
  "levels": 123,
  "limit": 123,
  "offset": 123,
  "totalOrderCount": 123
}
'

import requests

url = "https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook"

payload = {
    "market": { "marketId": "<string>" },
    "tickSize": 123,
    "sizeInUsd": True,
    "levels": 123,
    "limit": 123,
    "offset": 123,
    "totalOrderCount": 123
}
headers = {
    "Connect-Protocol-Version": "<connect-protocol-version>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Connect-Protocol-Version': '<connect-protocol-version>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    market: {marketId: '<string>'},
    tickSize: 123,
    sizeInUsd: true,
    levels: 123,
    limit: 123,
    offset: 123,
    totalOrderCount: 123
  })
};

fetch('https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'market' => [
        'marketId' => '<string>'
    ],
    'tickSize' => 123,
    'sizeInUsd' => true,
    'levels' => 123,
    'limit' => 123,
    'offset' => 123,
    'totalOrderCount' => 123
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Connect-Protocol-Version: <connect-protocol-version>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook"

	payload := strings.NewReader("{\n  \"market\": {\n    \"marketId\": \"<string>\"\n  },\n  \"tickSize\": 123,\n  \"sizeInUsd\": true,\n  \"levels\": 123,\n  \"limit\": 123,\n  \"offset\": 123,\n  \"totalOrderCount\": 123\n}")

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

	req.Header.Add("Connect-Protocol-Version", "<connect-protocol-version>")
	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook")
  .header("Connect-Protocol-Version", "<connect-protocol-version>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"market\": {\n    \"marketId\": \"<string>\"\n  },\n  \"tickSize\": 123,\n  \"sizeInUsd\": true,\n  \"levels\": 123,\n  \"limit\": 123,\n  \"offset\": 123,\n  \"totalOrderCount\": 123\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.fairground.fi/orderbook_service.v1.OrderBookService/GetOrderBook")

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

request = Net::HTTP::Post.new(url)
request["Connect-Protocol-Version"] = '<connect-protocol-version>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"market\": {\n    \"marketId\": \"<string>\"\n  },\n  \"tickSize\": 123,\n  \"sizeInUsd\": true,\n  \"levels\": 123,\n  \"limit\": 123,\n  \"offset\": 123,\n  \"totalOrderCount\": 123\n}"

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

{
  "orderBook": {
    "marketId": "1",
    "timestamp": "2026-07-11T14:32:07Z",
    "pageSize": 50,
    "offset": 0,
    "totalOrderCount": 214,
    "levels": 10,
    "tickSize": 10,
    "sizeInUsd": true,
    "book": {
      "bids": [
        {
          "price": 65400,
          "size": 120000,
          "orderCount": 6,
          "cumulativeTotal": 120000
        },
        {
          "price": 65390,
          "size": 85000,
          "orderCount": 4,
          "cumulativeTotal": 205000
        }
      ],
      "asks": [
        {
          "price": 65430,
          "size": 95000,
          "orderCount": 5,
          "cumulativeTotal": 95000
        },
        {
          "price": 65440,
          "size": 60000,
          "orderCount": 3,
          "cumulativeTotal": 155000
        }
      ]
    }
  }
}