curl --request POST \
  --url https://api.withflex.com/v1/coupons \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "coupon": {
    "name": "Coupon",
    "amount_off": 100,
    "duration": "once",
    "percent_off": 10,
    "max_redemptions": 100,
    "metadata": {
      "key": "value"
    }
  }
}
'

import requests

url = "https://api.withflex.com/v1/coupons"

payload = { "coupon": {
        "name": "Coupon",
        "amount_off": 100,
        "duration": "once",
        "percent_off": 10,
        "max_redemptions": 100,
        "metadata": { "key": "value" }
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    coupon: {
      name: 'Coupon',
      amount_off: 100,
      duration: 'once',
      percent_off: 10,
      max_redemptions: 100,
      metadata: {key: 'value'}
    }
  })
};

fetch('https://api.withflex.com/v1/coupons', 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.withflex.com/v1/coupons",
  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([
    'coupon' => [
        'name' => 'Coupon',
        'amount_off' => 100,
        'duration' => 'once',
        'percent_off' => 10,
        'max_redemptions' => 100,
        'metadata' => [
                'key' => 'value'
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "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.withflex.com/v1/coupons"

	payload := strings.NewReader("{\n  \"coupon\": {\n    \"name\": \"Coupon\",\n    \"amount_off\": 100,\n    \"duration\": \"once\",\n    \"percent_off\": 10,\n    \"max_redemptions\": 100,\n    \"metadata\": {\n      \"key\": \"value\"\n    }\n  }\n}")

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

	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.withflex.com/v1/coupons")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"coupon\": {\n    \"name\": \"Coupon\",\n    \"amount_off\": 100,\n    \"duration\": \"once\",\n    \"percent_off\": 10,\n    \"max_redemptions\": 100,\n    \"metadata\": {\n      \"key\": \"value\"\n    }\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.withflex.com/v1/coupons")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"coupon\": {\n    \"name\": \"Coupon\",\n    \"amount_off\": 100,\n    \"duration\": \"once\",\n    \"percent_off\": 10,\n    \"max_redemptions\": 100,\n    \"metadata\": {\n      \"key\": \"value\"\n    }\n  }\n}"

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

{
  "coupon": {
    "coupon_id": "fcoup_1234567890",
    "amount_off": 2500,
    "duration": "once",
    "metadata": {
      "order_id": "8842",
      "channel": "shopify"
    },
    "name": "Example",
    "valid": false,
    "created_at": "2026-06-15T14:30:00Z",
    "test_mode": false
  }
}

{
  "code": "string",
  "detail": "string"
}

{
  "code": "string",
  "detail": "string"
}

{
  "code": "string",
  "detail": "string"
}

{
  "code": "string",
  "detail": "string"
}

{
  "detail": [
    {
      "loc": [
        "string"
      ],
      "msg": "string",
      "type": "string"
    }
  ]
}

{
  "code": "string",
  "detail": "string"
}