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POST
/
api
/
v1
/
orders
Place order (legacy EIP-712 flow)
curl --request POST \
  --url https://api.vatic.trading/api/v1/orders \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "walletId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "tokenId": "<string>",
  "price": 0.5,
  "size": 2
}
'
import requests

url = "https://api.vatic.trading/api/v1/orders"

payload = {
"walletId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
"tokenId": "<string>",
"price": 0.5,
"size": 2
}
headers = {
"x-api-key": "<api-key>",
"Content-Type": "application/json"
}

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

print(response.text)
const options = {
method: 'POST',
headers: {'x-api-key': '<api-key>', 'Content-Type': 'application/json'},
body: JSON.stringify({
walletId: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
tokenId: '<string>',
price: 0.5,
size: 2
})
};

fetch('https://api.vatic.trading/api/v1/orders', 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.vatic.trading/api/v1/orders",
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([
'walletId' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
'tokenId' => '<string>',
'price' => 0.5,
'size' => 2
]),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"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"
"strings"
"net/http"
"io"
)

func main() {

url := "https://api.vatic.trading/api/v1/orders"

payload := strings.NewReader("{\n \"walletId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tokenId\": \"<string>\",\n \"price\": 0.5,\n \"size\": 2\n}")

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

req.Header.Add("x-api-key", "<api-key>")
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.vatic.trading/api/v1/orders")
.header("x-api-key", "<api-key>")
.header("Content-Type", "application/json")
.body("{\n \"walletId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tokenId\": \"<string>\",\n \"price\": 0.5,\n \"size\": 2\n}")
.asString();
require 'uri'
require 'net/http'

url = URI("https://api.vatic.trading/api/v1/orders")

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

request = Net::HTTP::Post.new(url)
request["x-api-key"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"walletId\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n \"tokenId\": \"<string>\",\n \"price\": 0.5,\n \"size\": 2\n}"

response = http.request(request)
puts response.read_body
{
  "ok": true,
  "orderId": "0xabc...",
  "status": "matched",
  "safeAddress": "0x...",
  "order": {
    "tokenId": "...",
    "side": "BUY",
    "price": 0.5,
    "size": 10,
    "makerAmount": "10000000",
    "takerAmount": "20000000"
  }
}

Authorizations

x-api-key
string
header
required

Required for order endpoints. Obtain your API key from the Vatic dashboard.

Body

application/json
walletId
string<uuid>
required
tokenId
string
required

Polymarket outcome token ID.

side
enum<string>
required
Available options:
BUY,
SELL
price
number
required

Limit price (0.01–0.99).

Required range: 0.01 <= x <= 0.99
size
number
required

Order size in USDC (min 1).

Required range: x >= 1

Response

Order submitted