Discount Calculator API
Find the final price, savings, and discount amount for any percentage off — instantly.
Fast & Accurate
Get precise results instantly.
Easy Integration
Simple REST API with JSON response.
Developer Friendly
Clear docs and SDK examples.
Free to Start
1,000 free requests/month.
Endpoint
All requests should be made to the following endpoint:
GET https://api.tools.town/v1/calculators/discount Authentication
This endpoint requires an API Key. Include your API key in the request header.
Request Parameters
Send a GET request with query parameters.
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
originalPrice | number | ✓ | Original price must be greater than zero. | 100 |
discountRate | number | ✓ | Discount must be between 0 and 100%. | 10 |
Example Request
curl -G "https://api.tools.town/v1/calculators/discount" \
-H "Authorization: Bearer YOUR_API_KEY" \
--data-urlencode "originalPrice=100" \
--data-urlencode "discountRate=10" Example Response 200 OK
{
"success": true,
"data": {
"originalPrice": "0",
"discountRate": "0",
"discountAmount": "0",
"finalPrice": "0",
"savings": "0"
}
} Error Codes
| Code | Meaning |
|---|---|
| 400 | Bad Request — missing or invalid parameter |
| 401 | Unauthorized — API key missing or invalid |
| 429 | Rate limit exceeded — free tier: 1,000 requests/month |
| 500 | Internal Server Error — try again or contact support |