curl --request POST \
  --url https://api.demo.cula.earth/tracking/v1/material-pools \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Cula-Organisation-Id: <cula-organisation-id>' \
  --data '
{
  "site": {
    "id": "ste_01k8g7aec6dt5zrtamc72ww446"
  },
  "materials": [
    {
      "id": "mat_01kh0fwkq4x8p5ea34dr6e4v2e"
    }
  ],
  "name": "Woodchips pile north",
  "external_id": "POOL-EXT-0001"
}
'

import requests

url = "https://api.demo.cula.earth/tracking/v1/material-pools"

payload = {
    "site": { "id": "ste_01k8g7aec6dt5zrtamc72ww446" },
    "materials": [{ "id": "mat_01kh0fwkq4x8p5ea34dr6e4v2e" }],
    "name": "Woodchips pile north",
    "external_id": "POOL-EXT-0001"
}
headers = {
    "Cula-Organisation-Id": "<cula-organisation-id>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Cula-Organisation-Id': '<cula-organisation-id>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    site: {id: 'ste_01k8g7aec6dt5zrtamc72ww446'},
    materials: [{id: 'mat_01kh0fwkq4x8p5ea34dr6e4v2e'}],
    name: 'Woodchips pile north',
    external_id: 'POOL-EXT-0001'
  })
};

fetch('https://api.demo.cula.earth/tracking/v1/material-pools', 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.demo.cula.earth/tracking/v1/material-pools",
  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([
    'site' => [
        'id' => 'ste_01k8g7aec6dt5zrtamc72ww446'
    ],
    'materials' => [
        [
                'id' => 'mat_01kh0fwkq4x8p5ea34dr6e4v2e'
        ]
    ],
    'name' => 'Woodchips pile north',
    'external_id' => 'POOL-EXT-0001'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json",
    "Cula-Organisation-Id: <cula-organisation-id>"
  ],
]);

$response = curl_exec($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.demo.cula.earth/tracking/v1/material-pools"

	payload := strings.NewReader("{\n  \"site\": {\n    \"id\": \"ste_01k8g7aec6dt5zrtamc72ww446\"\n  },\n  \"materials\": [\n    {\n      \"id\": \"mat_01kh0fwkq4x8p5ea34dr6e4v2e\"\n    }\n  ],\n  \"name\": \"Woodchips pile north\",\n  \"external_id\": \"POOL-EXT-0001\"\n}")

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

	req.Header.Add("Cula-Organisation-Id", "<cula-organisation-id>")
	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.demo.cula.earth/tracking/v1/material-pools")
  .header("Cula-Organisation-Id", "<cula-organisation-id>")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"site\": {\n    \"id\": \"ste_01k8g7aec6dt5zrtamc72ww446\"\n  },\n  \"materials\": [\n    {\n      \"id\": \"mat_01kh0fwkq4x8p5ea34dr6e4v2e\"\n    }\n  ],\n  \"name\": \"Woodchips pile north\",\n  \"external_id\": \"POOL-EXT-0001\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.demo.cula.earth/tracking/v1/material-pools")

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

request = Net::HTTP::Post.new(url)
request["Cula-Organisation-Id"] = '<cula-organisation-id>'
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"site\": {\n    \"id\": \"ste_01k8g7aec6dt5zrtamc72ww446\"\n  },\n  \"materials\": [\n    {\n      \"id\": \"mat_01kh0fwkq4x8p5ea34dr6e4v2e\"\n    }\n  ],\n  \"name\": \"Woodchips pile north\",\n  \"external_id\": \"POOL-EXT-0001\"\n}"

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

{
  "id": "mpl_01k2xytkbr0pxazkxbj4j5gr0y",
  "external_id": "POOL-EXT-0001",
  "name": "Woodchips pile north",
  "type": "pile",
  "transaction_strategy": "stack",
  "is_archived": false,
  "site": {
    "id": "ste_01k8g7aec6dt5zrtamc72ww446",
    "external_id": "SITE-EXT-0001"
  },
  "contents": [
    {
      "material": {
        "id": "mat_01kh0fwkq4x8p5ea34dr6e4v2e"
      },
      "weight_in_kg": 600
    }
  ],
  "created_at": "2025-10-10T21:03:58Z"
}

{
  "code": "bad_request",
  "message": "The field limit must not be greater than 100."
}

{
  "code": "unauthorized",
  "message": "Invalid or expired token"
}

{
  "code": "conflict",
  "message": "There exists already an object with external ID MY-CUSTOM-ID within this organisation."
}

{
  "code": "internal_server_error",
  "message": "Internal server error."
}