API Documentation

Integrate QREngine into your applications with our REST API

Quick Start

1. Get API Token

Go to Dashboard → API Tokens and create a new token

2. Add to Headers

Include token in Authorization header as Bearer token

3. Make Requests

Start generating codes using the API endpoints

Authentication

All API requests require authentication using a Personal Access Token (PAT). Include your token in the Authorization header:

Authorization: Bearer qre_your_token_here

💡 Tokens start with qre_ prefix. Keep your tokens secure and never expose them in client-side code.

Base URL

https://api.qrengine.site

All endpoints are relative to this base URL.

Example: Generate a QR Code

curl -X POST https://api.qrengine.site/api/codes/generate \
  -H "Authorization: Bearer qre_your_token" \
  -H "Content-Type: application/json" \
  -d '{
    "type": "qr",
    "data": "https://example.com",
    "name": "My Website QR",
    "customization": {
      "color": "#8B5CF6",
      "size": 400
    }
  }'

API Endpoints

POST/api/codes/generateAuth Required

Generate a new QR code or barcode

Request Body

{
  "type": "qr",           // "qr" or "barcode"
  "data": "https://example.com",
  "name": "My Code",      // optional
  "barcodeFormat": "CODE128", // required for barcode
  "format": "png",        // "png" or "svg" (QR only)
  "saveToLibrary": true,  // optional
  "customization": {      // optional
    "color": "#000000",
    "backgroundColor": "#FFFFFF",
    "size": 300,
    "errorCorrection": "M" // L, M, Q, H (QR only)
  }
}

Response

{
  "success": true,
  "data": {
    "id": "abc123",
    "imageBase64": "data:image/png;base64,..."
  }
}

GET/api/codesAuth Required

Get all your saved codes

Query Parameters

type (optional): "qr" | "barcode"
limit (optional): number
offset (optional): number

Response

{
  "success": true,
  "data": {
    "codes": [...],
    "total": 10
  }
}

GET/api/codes/:idAuth Required

Get a specific code by ID

Response

{
  "success": true,
  "data": {
    "id": "abc123",
    "name": "My Code",
    "type": "qr",
    "data": "https://example.com",
    "imageBase64": "...",
    "scans": 42,
    "createdAt": "2024-01-01T00:00:00Z"
  }
}

PUT/api/codes/:idAuth Required

Update a code (name, data, or active status)

Request Body

{
  "name": "Updated Name",  // optional
  "data": "new data",      // optional - regenerates code
  "isActive": true         // optional
}

Response

{
  "success": true,
  "data": { ... }
}

DELETE/api/codes/:idAuth Required

Delete a code

Response

{
  "success": true,
  "message": "Code deleted"
}

POST/api/tokensAuth Required

Create a new API token

Request Body

{
  "name": "Production API"
}

Response

{
  "success": true,
  "data": {
    "token": "qre_xxxx...",  // Only shown once!
    "name": "Production API"
  }
}

GET/api/tokensAuth Required

List all your API tokens

Response

{
  "success": true,
  "data": {
    "tokens": [
      { "name": "...", "createdAt": "...", "lastUsed": "..." }
    ]
  }
}

DELETE/api/tokens/:nameAuth Required

Revoke a specific token

Response

{
  "success": true,
  "message": "Token revoked"
}

Rate Limits

Plan	Codes	API Calls/Day
Free	5	100
Pro	50	5,000
Enterprise	Unlimited	Unlimited

Ready to get started?

Create your first API token and start building