Orderbook
curl --request GET \
--url https://api.polynode.dev/v3/perps/book/{instrument} \
--header 'x-api-key: <api-key>'import requests
url = "https://api.polynode.dev/v3/perps/book/{instrument}"
headers = {"x-api-key": "<api-key>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};
fetch('https://api.polynode.dev/v3/perps/book/{instrument}', 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.polynode.dev/v3/perps/book/{instrument}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"x-api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.polynode.dev/v3/perps/book/{instrument}"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("x-api-key", "<api-key>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.polynode.dev/v3/perps/book/{instrument}")
.header("x-api-key", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.polynode.dev/v3/perps/book/{instrument}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["x-api-key"] = '<api-key>'
response = http.request(request)
puts response.read_body{
"asks": [
[
"64122",
"1.53392"
],
[
"64123",
"0.47171"
],
[
"64124",
"0.70718"
]
],
"bids": [
[
"64121",
"0.79026"
],
[
"64120",
"0.47131"
],
[
"64119",
"0.70675"
]
],
"instrument_id": 6,
"symbol": "BTC-USD",
"timestamp": 1783739410893
}Perps Market Data
Orderbook
Full order book (price/quantity levels, best-first). Use ?depth= to limit levels per side.
GET
/
v3
/
perps
/
book
/
{instrument}
Orderbook
curl --request GET \
--url https://api.polynode.dev/v3/perps/book/{instrument} \
--header 'x-api-key: <api-key>'import requests
url = "https://api.polynode.dev/v3/perps/book/{instrument}"
headers = {"x-api-key": "<api-key>"}
response = requests.get(url, headers=headers)
print(response.text)const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};
fetch('https://api.polynode.dev/v3/perps/book/{instrument}', 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.polynode.dev/v3/perps/book/{instrument}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => [
"x-api-key: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://api.polynode.dev/v3/perps/book/{instrument}"
req, _ := http.NewRequest("GET", url, nil)
req.Header.Add("x-api-key", "<api-key>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.get("https://api.polynode.dev/v3/perps/book/{instrument}")
.header("x-api-key", "<api-key>")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.polynode.dev/v3/perps/book/{instrument}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Get.new(url)
request["x-api-key"] = '<api-key>'
response = http.request(request)
puts response.read_body{
"asks": [
[
"64122",
"1.53392"
],
[
"64123",
"0.47171"
],
[
"64124",
"0.70718"
]
],
"bids": [
[
"64121",
"0.79026"
],
[
"64120",
"0.47131"
],
[
"64119",
"0.70675"
]
],
"instrument_id": 6,
"symbol": "BTC-USD",
"timestamp": 1783739410893
}Levels are
For streaming updates subscribe to
[price, quantity] pairs, best-first on both sides (bids descending, asks ascending).
Query parameters
| Parameter | Description |
|---|---|
depth | Levels per side (default: full book) |
perps_book:<instrument> — every message there is a complete snapshot (including the immediate one on subscribe), so you replace your local book each time rather than merging deltas.⌘I