curl --request POST \
  --url https://api.opx.co/partners/v1/worksites/{id}/operations \
  --header 'Content-Type: application/json' \
  --data '
{
  "operation_id": 123,
  "kwhc": 123,
  "cee_amount": 123,
  "aides_informations": [
    "<string>"
  ],
  "external_reference": "<string>",
  "cdp_amount": 123,
  "mpr_amount": 123,
  "fost_version": "<string>",
  "invoice_reference": "<string>",
  "ah_informations": [
    "<string>"
  ],
  "material_ids": [
    "<string>"
  ],
  "completion_proof_date": "<string>",
  "commitment_date": "<string>",
  "subcontractor_id": 123,
  "quote_reference": "<string>"
}
'

import requests

url = "https://api.opx.co/partners/v1/worksites/{id}/operations"

payload = {
    "operation_id": 123,
    "kwhc": 123,
    "cee_amount": 123,
    "aides_informations": ["<string>"],
    "external_reference": "<string>",
    "cdp_amount": 123,
    "mpr_amount": 123,
    "fost_version": "<string>",
    "invoice_reference": "<string>",
    "ah_informations": ["<string>"],
    "material_ids": ["<string>"],
    "completion_proof_date": "<string>",
    "commitment_date": "<string>",
    "subcontractor_id": 123,
    "quote_reference": "<string>"
}
headers = {"Content-Type": "application/json"}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    operation_id: 123,
    kwhc: 123,
    cee_amount: 123,
    aides_informations: ['<string>'],
    external_reference: '<string>',
    cdp_amount: 123,
    mpr_amount: 123,
    fost_version: '<string>',
    invoice_reference: '<string>',
    ah_informations: ['<string>'],
    material_ids: ['<string>'],
    completion_proof_date: '<string>',
    commitment_date: '<string>',
    subcontractor_id: 123,
    quote_reference: '<string>'
  })
};

fetch('https://api.opx.co/partners/v1/worksites/{id}/operations', 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.opx.co/partners/v1/worksites/{id}/operations",
  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([
    'operation_id' => 123,
    'kwhc' => 123,
    'cee_amount' => 123,
    'aides_informations' => [
        '<string>'
    ],
    'external_reference' => '<string>',
    'cdp_amount' => 123,
    'mpr_amount' => 123,
    'fost_version' => '<string>',
    'invoice_reference' => '<string>',
    'ah_informations' => [
        '<string>'
    ],
    'material_ids' => [
        '<string>'
    ],
    'completion_proof_date' => '<string>',
    'commitment_date' => '<string>',
    'subcontractor_id' => 123,
    'quote_reference' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "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.opx.co/partners/v1/worksites/{id}/operations"

	payload := strings.NewReader("{\n  \"operation_id\": 123,\n  \"kwhc\": 123,\n  \"cee_amount\": 123,\n  \"aides_informations\": [\n    \"<string>\"\n  ],\n  \"external_reference\": \"<string>\",\n  \"cdp_amount\": 123,\n  \"mpr_amount\": 123,\n  \"fost_version\": \"<string>\",\n  \"invoice_reference\": \"<string>\",\n  \"ah_informations\": [\n    \"<string>\"\n  ],\n  \"material_ids\": [\n    \"<string>\"\n  ],\n  \"completion_proof_date\": \"<string>\",\n  \"commitment_date\": \"<string>\",\n  \"subcontractor_id\": 123,\n  \"quote_reference\": \"<string>\"\n}")

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

	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.opx.co/partners/v1/worksites/{id}/operations")
  .header("Content-Type", "application/json")
  .body("{\n  \"operation_id\": 123,\n  \"kwhc\": 123,\n  \"cee_amount\": 123,\n  \"aides_informations\": [\n    \"<string>\"\n  ],\n  \"external_reference\": \"<string>\",\n  \"cdp_amount\": 123,\n  \"mpr_amount\": 123,\n  \"fost_version\": \"<string>\",\n  \"invoice_reference\": \"<string>\",\n  \"ah_informations\": [\n    \"<string>\"\n  ],\n  \"material_ids\": [\n    \"<string>\"\n  ],\n  \"completion_proof_date\": \"<string>\",\n  \"commitment_date\": \"<string>\",\n  \"subcontractor_id\": 123,\n  \"quote_reference\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.opx.co/partners/v1/worksites/{id}/operations")

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

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"operation_id\": 123,\n  \"kwhc\": 123,\n  \"cee_amount\": 123,\n  \"aides_informations\": [\n    \"<string>\"\n  ],\n  \"external_reference\": \"<string>\",\n  \"cdp_amount\": 123,\n  \"mpr_amount\": 123,\n  \"fost_version\": \"<string>\",\n  \"invoice_reference\": \"<string>\",\n  \"ah_informations\": [\n    \"<string>\"\n  ],\n  \"material_ids\": [\n    \"<string>\"\n  ],\n  \"completion_proof_date\": \"<string>\",\n  \"commitment_date\": \"<string>\",\n  \"subcontractor_id\": 123,\n  \"quote_reference\": \"<string>\"\n}"

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

{
  "data": {
    "id": 123,
    "external_reference": "<string>",
    "worksite_id": 123,
    "operation_id": 123,
    "status": "<string>",
    "code": "<string>",
    "fost_version": "<string>",
    "classic_kwhc": "<string>",
    "precarity_kwhc": "<string>",
    "cee_amount": "<string>",
    "cee_amount_total": "<string>",
    "cdp_amount": "<string>",
    "cdp_amount_total": "<string>",
    "mpr_amount": "<string>",
    "invoice_reference": "<string>",
    "aides_informations": [
      "<unknown>"
    ],
    "ah_informations": [
      "<unknown>"
    ],
    "material_ids": [
      "<unknown>"
    ],
    "completion_proof_date": "<string>",
    "commitment_date": "<string>",
    "subcontractor_id": 123,
    "custom_worksite_operation_status_id": "<string>",
    "custom_worksite_operation_status_label": "<string>",
    "quote_reference": "<string>"
  }
}

{
  "message": "<string>",
  "errors": {}
}