curl --request POST \
  --url https://api.withallo.com/v2/api/crm/companies \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Acme Corp",
  "website": "https://acme.com",
  "industry": "Technology",
  "custom_attributes": {
    "ping_pong_level": "Advanced"
  }
}
'

import requests

url = "https://api.withallo.com/v2/api/crm/companies"

payload = {
    "name": "Acme Corp",
    "website": "https://acme.com",
    "industry": "Technology",
    "custom_attributes": { "ping_pong_level": "Advanced" }
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    name: 'Acme Corp',
    website: 'https://acme.com',
    industry: 'Technology',
    custom_attributes: {ping_pong_level: 'Advanced'}
  })
};

fetch('https://api.withallo.com/v2/api/crm/companies', 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.withallo.com/v2/api/crm/companies",
  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([
    'name' => 'Acme Corp',
    'website' => 'https://acme.com',
    'industry' => 'Technology',
    'custom_attributes' => [
        'ping_pong_level' => 'Advanced'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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.withallo.com/v2/api/crm/companies"

	payload := strings.NewReader("{\n  \"name\": \"Acme Corp\",\n  \"website\": \"https://acme.com\",\n  \"industry\": \"Technology\",\n  \"custom_attributes\": {\n    \"ping_pong_level\": \"Advanced\"\n  }\n}")

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

	req.Header.Add("Authorization", "<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.withallo.com/v2/api/crm/companies")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"name\": \"Acme Corp\",\n  \"website\": \"https://acme.com\",\n  \"industry\": \"Technology\",\n  \"custom_attributes\": {\n    \"ping_pong_level\": \"Advanced\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.withallo.com/v2/api/crm/companies")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"name\": \"Acme Corp\",\n  \"website\": \"https://acme.com\",\n  \"industry\": \"Technology\",\n  \"custom_attributes\": {\n    \"ping_pong_level\": \"Advanced\"\n  }\n}"

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

{
  "data": {
    "id": "com-xyz789",
    "name": "Acme Corp",
    "website": "https://acme.com",
    "industry": "Technology",
    "person_count": 3,
    "interactions": 12,
    "last_activity_at": "2026-04-28T10:30:00",
    "created_at": "2026-04-01T09:00:00",
    "updated_at": "2026-04-28T10:30:00",
    "custom_attributes": {
      "ping_pong_level": "advanced",
      "renewal_date": "2026-12-01"
    }
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "retryable": true,
    "request_id": "<string>",
    "retry_after_seconds": 123
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "retryable": true,
    "request_id": "<string>",
    "retry_after_seconds": 123
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "retryable": true,
    "request_id": "<string>",
    "retry_after_seconds": 123
  }
}

{
  "error": {
    "type": "<string>",
    "code": "<string>",
    "message": "<string>",
    "retryable": true,
    "request_id": "<string>",
    "retry_after_seconds": 123
  }
}