Authentication

Authorization overview

We use two pairs of keys — one for server applications (back-end) and one for publicly available client applications (mobile apps and web applications).

Voucherify uses OAuth 2.0 to authorize requests to the platform. It is published under the RFC 6749.

Application authentication

To get access to the Voucherify API, the client application needs to pass Application ID and Application Secret Key. You can get (and reset) these tokens in the Project settings.

By default, there are two pairs of authentication keys. The first, Application Keys, are meant to authorize your requests to Voucherify API. You can create more Application Keys for each user.

A generated pair of Application ID and Application Secret Key must be attached to every HTTP request as custom headers: X-App-Id, X-App-Token.

X-App-Id: 2f7075c7-201d-471f-a249-3XXXX8092e70
X-App-Token: 7ccb680d-107e-XXXX-8466-1f15048e34f4

Most likely you do not need to send your keys manually. We provide a growing number of SDKs that know how to handle it, so no extra code is needed.

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Security threat

It is essential that you keep your keys secure and not share them with others. Treat it as your application's password for Voucherify.

Client-side authentication

The second authentication mechanism uses publishable keys. It is meant to be used by the public (web and mobile) clients to access a subset of the API (labeled with (client-side) in the API reference).

See voucherify.js as an example.

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Domain whitelist

Remember to whitelist your domain/mobile app origin in the Project settings > Client-side Settings to allow client-side connections.

Client-side request headers

For client-side HTTP requests, you need to provide the following headers:

-H "X-Client-Application-Id: YOUR-CLIENT-SIDE-APPLICATION-ID" \
  -H "X-Client-Token: YOUR-CLIENT-SIDE-TOKEN" \
  -H "Content-Type: application/json" \
  -H "origin: yourdomain.com" \

Here is an example of a client-side request (Validate Voucher (client-side)) authorized using client-side API keys.

curl -X GET \
  -H "X-Client-Application-Id: YOUR-CLIENT-SIDE-APPLICATION-ID" \
  -H "X-Client-Token: YOUR-CLIENT-SIDE-TOKEN" \
  -H "Content-Type: application/json" \
  -H "origin: yourdomain.com" \
  -d '{
    "order" : {
        "amount" : 20000
    }
  }' \
  "https://api.voucherify.io/client/v1/validate?code=BLCKFRDY"