curl --request POST \
  --url https://api.meetcampfire.com/rev/api/v1/invoice-lines \
  --header 'Content-Type: application/json' \
  --data '
{
  "invoice": 123,
  "contract_line": 123,
  "product": 123,
  "description": "<string>",
  "service_start": "2023-12-25",
  "service_end": "2023-12-25",
  "currency": "<string>",
  "quantity": 0,
  "rate": 0,
  "amount": 0,
  "tax": 0,
  "tax_description": "<string>",
  "discount": 0,
  "department": 123,
  "tags": [
    123
  ]
}
'

import requests

url = "https://api.meetcampfire.com/rev/api/v1/invoice-lines"

payload = {
    "invoice": 123,
    "contract_line": 123,
    "product": 123,
    "description": "<string>",
    "service_start": "2023-12-25",
    "service_end": "2023-12-25",
    "currency": "<string>",
    "quantity": 0,
    "rate": 0,
    "amount": 0,
    "tax": 0,
    "tax_description": "<string>",
    "discount": 0,
    "department": 123,
    "tags": [123]
}
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({
    invoice: 123,
    contract_line: 123,
    product: 123,
    description: '<string>',
    service_start: '2023-12-25',
    service_end: '2023-12-25',
    currency: '<string>',
    quantity: 0,
    rate: 0,
    amount: 0,
    tax: 0,
    tax_description: '<string>',
    discount: 0,
    department: 123,
    tags: [123]
  })
};

fetch('https://api.meetcampfire.com/rev/api/v1/invoice-lines', 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.meetcampfire.com/rev/api/v1/invoice-lines",
  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([
    'invoice' => 123,
    'contract_line' => 123,
    'product' => 123,
    'description' => '<string>',
    'service_start' => '2023-12-25',
    'service_end' => '2023-12-25',
    'currency' => '<string>',
    'quantity' => 0,
    'rate' => 0,
    'amount' => 0,
    'tax' => 0,
    'tax_description' => '<string>',
    'discount' => 0,
    'department' => 123,
    'tags' => [
        123
    ]
  ]),
  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.meetcampfire.com/rev/api/v1/invoice-lines"

	payload := strings.NewReader("{\n  \"invoice\": 123,\n  \"contract_line\": 123,\n  \"product\": 123,\n  \"description\": \"<string>\",\n  \"service_start\": \"2023-12-25\",\n  \"service_end\": \"2023-12-25\",\n  \"currency\": \"<string>\",\n  \"quantity\": 0,\n  \"rate\": 0,\n  \"amount\": 0,\n  \"tax\": 0,\n  \"tax_description\": \"<string>\",\n  \"discount\": 0,\n  \"department\": 123,\n  \"tags\": [\n    123\n  ]\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.meetcampfire.com/rev/api/v1/invoice-lines")
  .header("Content-Type", "application/json")
  .body("{\n  \"invoice\": 123,\n  \"contract_line\": 123,\n  \"product\": 123,\n  \"description\": \"<string>\",\n  \"service_start\": \"2023-12-25\",\n  \"service_end\": \"2023-12-25\",\n  \"currency\": \"<string>\",\n  \"quantity\": 0,\n  \"rate\": 0,\n  \"amount\": 0,\n  \"tax\": 0,\n  \"tax_description\": \"<string>\",\n  \"discount\": 0,\n  \"department\": 123,\n  \"tags\": [\n    123\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.meetcampfire.com/rev/api/v1/invoice-lines")

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  \"invoice\": 123,\n  \"contract_line\": 123,\n  \"product\": 123,\n  \"description\": \"<string>\",\n  \"service_start\": \"2023-12-25\",\n  \"service_end\": \"2023-12-25\",\n  \"currency\": \"<string>\",\n  \"quantity\": 0,\n  \"rate\": 0,\n  \"amount\": 0,\n  \"tax\": 0,\n  \"tax_description\": \"<string>\",\n  \"discount\": 0,\n  \"department\": 123,\n  \"tags\": [\n    123\n  ]\n}"

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

{
  "id": 123,
  "invoice": 123,
  "product_name": "",
  "department_name": "",
  "created_at": "2023-11-07T05:31:56Z",
  "last_modified_at": "2023-11-07T05:31:56Z",
  "contract_line": 123,
  "product": 123,
  "description": "<string>",
  "service_start": "2023-12-25",
  "service_end": "2023-12-25",
  "currency": "<string>",
  "quantity": 0,
  "rate": 0,
  "amount": 0,
  "tax": 0,
  "tax_description": "<string>",
  "discount": 0,
  "department": 123,
  "tags": [
    123
  ]
}