curl --request POST \
  --url https://n-api.leadstaker.com/v1/fields \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "label": "<string>",
  "type": "TEXT",
  "fieldGroupId": "<string>",
  "config": {},
  "position": 1,
  "level": "USER"
}
'

import requests

url = "https://n-api.leadstaker.com/v1/fields"

payload = {
    "label": "<string>",
    "type": "TEXT",
    "fieldGroupId": "<string>",
    "config": {},
    "position": 1,
    "level": "USER"
}
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({
    label: '<string>',
    type: 'TEXT',
    fieldGroupId: '<string>',
    config: {},
    position: 1,
    level: 'USER'
  })
};

fetch('https://n-api.leadstaker.com/v1/fields', 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://n-api.leadstaker.com/v1/fields",
  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([
    'label' => '<string>',
    'type' => 'TEXT',
    'fieldGroupId' => '<string>',
    'config' => [
        
    ],
    'position' => 1,
    'level' => 'USER'
  ]),
  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://n-api.leadstaker.com/v1/fields"

	payload := strings.NewReader("{\n  \"label\": \"<string>\",\n  \"type\": \"TEXT\",\n  \"fieldGroupId\": \"<string>\",\n  \"config\": {},\n  \"position\": 1,\n  \"level\": \"USER\"\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://n-api.leadstaker.com/v1/fields")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"label\": \"<string>\",\n  \"type\": \"TEXT\",\n  \"fieldGroupId\": \"<string>\",\n  \"config\": {},\n  \"position\": 1,\n  \"level\": \"USER\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://n-api.leadstaker.com/v1/fields")

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  \"label\": \"<string>\",\n  \"type\": \"TEXT\",\n  \"fieldGroupId\": \"<string>\",\n  \"config\": {},\n  \"position\": 1,\n  \"level\": \"USER\"\n}"

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

{
  "id": "66eab3c47d21ff0011b2d6e8",
  "entityType": "CONTACT",
  "label": "Nome",
  "type": "TEXT",
  "config": {},
  "position": 0,
  "level": "USER",
  "fieldGroupId": "66eab3c47d21ff0011b2d6f0",
  "projectId": "665f1c2e8a94b70012d4e9a1",
  "createdAt": "2026-01-12T14:08:00.000Z",
  "updatedAt": "2026-01-15T09:32:00.000Z"
}

{
  "errorCode": "<string>",
  "message": "<string>",
  "status": 123,
  "errors": [
    {
      "field": "<string>",
      "code": "<string>",
      "message": "<string>"
    }
  ]
}

{
  "errorCode": "<string>",
  "message": "<string>",
  "status": 123,
  "errors": [
    {
      "field": "<string>",
      "code": "<string>",
      "message": "<string>"
    }
  ]
}