curl --request POST \
  --url https://api.sellfern.com/expenses \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "category": "Software",
  "amount": 49.99,
  "date": "2026-06-01",
  "store_id": "<string>",
  "description": "Monthly design tool subscription",
  "currency": "USD",
  "original_currency": "USD",
  "base_amount": 123,
  "bhxh_amount": 123,
  "bhxh_rate": 123,
  "bhxh_type": "<string>",
  "employee_name": "<string>"
}
'

import requests

url = "https://api.sellfern.com/expenses"

payload = {
    "category": "Software",
    "amount": 49.99,
    "date": "2026-06-01",
    "store_id": "<string>",
    "description": "Monthly design tool subscription",
    "currency": "USD",
    "original_currency": "USD",
    "base_amount": 123,
    "bhxh_amount": 123,
    "bhxh_rate": 123,
    "bhxh_type": "<string>",
    "employee_name": "<string>"
}
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({
    category: 'Software',
    amount: 49.99,
    date: '2026-06-01',
    store_id: '<string>',
    description: 'Monthly design tool subscription',
    currency: 'USD',
    original_currency: 'USD',
    base_amount: 123,
    bhxh_amount: 123,
    bhxh_rate: 123,
    bhxh_type: '<string>',
    employee_name: '<string>'
  })
};

fetch('https://api.sellfern.com/expenses', 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.sellfern.com/expenses",
  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([
    'category' => 'Software',
    'amount' => 49.99,
    'date' => '2026-06-01',
    'store_id' => '<string>',
    'description' => 'Monthly design tool subscription',
    'currency' => 'USD',
    'original_currency' => 'USD',
    'base_amount' => 123,
    'bhxh_amount' => 123,
    'bhxh_rate' => 123,
    'bhxh_type' => '<string>',
    'employee_name' => '<string>'
  ]),
  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://api.sellfern.com/expenses"

	payload := strings.NewReader("{\n  \"category\": \"Software\",\n  \"amount\": 49.99,\n  \"date\": \"2026-06-01\",\n  \"store_id\": \"<string>\",\n  \"description\": \"Monthly design tool subscription\",\n  \"currency\": \"USD\",\n  \"original_currency\": \"USD\",\n  \"base_amount\": 123,\n  \"bhxh_amount\": 123,\n  \"bhxh_rate\": 123,\n  \"bhxh_type\": \"<string>\",\n  \"employee_name\": \"<string>\"\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://api.sellfern.com/expenses")
  .header("x-api-key", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"category\": \"Software\",\n  \"amount\": 49.99,\n  \"date\": \"2026-06-01\",\n  \"store_id\": \"<string>\",\n  \"description\": \"Monthly design tool subscription\",\n  \"currency\": \"USD\",\n  \"original_currency\": \"USD\",\n  \"base_amount\": 123,\n  \"bhxh_amount\": 123,\n  \"bhxh_rate\": 123,\n  \"bhxh_type\": \"<string>\",\n  \"employee_name\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.sellfern.com/expenses")

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  \"category\": \"Software\",\n  \"amount\": 49.99,\n  \"date\": \"2026-06-01\",\n  \"store_id\": \"<string>\",\n  \"description\": \"Monthly design tool subscription\",\n  \"currency\": \"USD\",\n  \"original_currency\": \"USD\",\n  \"base_amount\": 123,\n  \"bhxh_amount\": 123,\n  \"bhxh_rate\": 123,\n  \"bhxh_type\": \"<string>\",\n  \"employee_name\": \"<string>\"\n}"

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

{
  "success": true,
  "data": {
    "id": 42,
    "store_id": "<string>",
    "store_name": "<string>",
    "category": "Payroll",
    "amount": 123,
    "original_amount": 123,
    "original_currency": "USD",
    "date": "2023-12-25",
    "description": "<string>",
    "base_amount": 123,
    "bhxh_amount": 123,
    "bhxh_rate": 123,
    "bhxh_type": "<string>",
    "employee_name": "<string>",
    "created_at": "2023-11-07T05:31:56Z"
  },
  "meta": {
    "request_id": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "validation_error",
    "message": "Request validation failed."
  },
  "meta": {
    "request_id": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "unauthorized",
    "message": "Missing or invalid API key."
  },
  "meta": {
    "request_id": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "missing_scope",
    "message": "Missing required scope."
  },
  "meta": {
    "request_id": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "rate_limited",
    "message": "Rate limit exceeded."
  },
  "meta": {
    "request_id": "<string>"
  }
}