$Discount Calculation$

Discount Calculation

Finance Math & Calculations Credits / request: 1

Applies a percent or fixed discount to a list price.

GET https://api.apikodu.com/api/v1/math/discount

Documentation

Overview

Calculates discount (percent or fixed amount).

Authentication

Every request requires the x-api-key header. Credits used and remaining quota are returned in response headers (x-api-credits-used, x-api-remaining-credits, x-rate-limit-*).

Request

GET https://api.apikodu.com/api/v1/math/discount?amount=100&mode=percent&rate=10&currency=EUR

GET query or POST JSON (single amount or list).

Parameters

Name	Type	Required	Default	Options	Description
`amount`	number	* Required	—	—	List price (GET). POST uses amount or items.
`mode`	string	Optional	`percent`	`percent` `fixed`	percent or fixed.
`rate`	number	Optional	—	—	Rate for percent mode.
`amountDiscount`	number	Optional	—	—	Discount amount for fixed mode.
`currency`	string	Optional	—	—	ISO code.

Response

Name	Type	Description
`amountList`	number	List price before discount. 2 decimals.
`amountDiscount`	number	Total discount amount. Sum of steps when stacked.
`amountNet`	number	Amount payable after discount.
`savingPercent`	number	Saving percent = amountDiscount / amountList * 100.
`currency`	string	ISO currency code. Null if omitted.
`breakdown`	array	Each applied discount step. One step on GET.
`breakdown[].index`	integer	Step index (1-based).
`breakdown[].mode`	string	Step mode: percent or fixed.
`breakdown[].amountBefore`	number	Amount before this step.
`breakdown[].amountDiscount`	number	Discount applied in this step.
`breakdown[].amountAfter`	number	Amount after this step.

Errors

HTTP	code	Description
`400`	`-241`	amount missing/out of range, POST body missing, or amountDiscount negative in fixed mode.
`400`	`-242`	mode is not percent or fixed.
`401`	`-100`	x-api-key is missing, empty, malformed, inactive, banned, expired, IP-restricted, or not allowed for this API.
`429`	`-221`	Per-minute request limit exceeded. Response headers: x-rate-limit-limit, x-rate-limit-remaining, x-rate-limit-reset.
`429`	—	Package credit quota cannot cover this request. Body may be { error, limit, currentUsage, requestCost } (no code field).
`500`	`-1`	Unexpected server error. message is a generic error text without technical details.

Notes

Success body is { data: { ... } }. Error body is { code, message }. code is an ApiResponseCode enum value (negative integer).
POST /discount accepts the same fields in the body.

Sample response

{
  "data": {
    "amountList": 100.00,
    "amountDiscount": 10.00,
    "amountNet": 90.00,
    "savingPercent": 10.0,
    "currency": "EUR",
    "breakdown": [
      {
        "index": 1,
        "mode": "percent",
        "amountBefore": 100.00,
        "amountDiscount": 10.00,
        "amountAfter": 90.00
      }
    ]
  }
}

Code samples

  
      const response = await fetch('https://api.apikodu.com/api/v1/math/discount', {
        method: 'GET',
        headers: {
          'x-api-key': 'YOUR_API_KEY'
        }
      });

      const data = await response.json();
      console.log(data);

  
      import requests

      headers = {
          'x-api-key': 'YOUR_API_KEY'
      }

      response = requests.get('https://api.apikodu.com/api/v1/math/discount', headers=headers)
      print(response.json())

  
      using var client = new HttpClient();
      client.DefaultRequestHeaders.Add("x-api-key", "YOUR_API_KEY");

      var response = await client.GetStringAsync("https://api.apikodu.com/api/v1/math/discount");
      Console.WriteLine(response);

  
      $response = file_get_contents('https://api.apikodu.com/api/v1/math/discount', false, stream_context_create([
          'http' => [
              'header' => "x-api-key: YOUR_API_KEY"
          ]
      ]));

      print_r(json_decode($response, true));

  
      curl -X GET 'https://api.apikodu.com/api/v1/math/discount' \
        -H 'x-api-key: YOUR_API_KEY'

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