United States

Canada

High trust apps securely store and use a client secret (app secret) as shown in the diagram.

Auth code flow for high trust apps

Generate access and refresh tokens

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IMPORTANT
The following values for access and refresh tokens are dynamic and can change:

Token expiration displays in the response body. Tokens created later can have different durations until they expire.

Token lengths are not fixed.

Do not hard code access and refresh token expirations or lengths so that you can handle any future updates.

To generate an access and refresh token pair:

Step	Who/what	What
1	Merchant	Log in to the merchant Clover account and install the developer’s app from the Clover App Market. By installing the app, the merchant authorizes the app to access the merchant’s information that the app requires.
2	Clover UI	Redirect the merchant to the developer’s app with an authorization code. Example: https://www.example.com/oauth_callback?merchant_id={MERCHANT_ID}&client_id={APP_ID}&code={AUTHORIZATION_CODE} NOTE: If the merchant is not logged in to their Clover merchant account and they try to access to your app, Clover redirects the merchant to log in to their merchant account and back to your app. Example: https://sandbox.dev.clover.com/oauth/v2/authorize?client_id={APP_ID}&redirect_uri={CLIENT_REDIRECT_URL}
3	Developer app	Request an access- and refresh-token pair. Send a POST request to `/oauth/v2/token`. Include the client ID, client secret, and auth code in the request body. Request POST /oauth/v2/token Query parameter—Optional If you do not need a refresh token, set the query parameter `no_refresh_token` to true in the request: `/oauth/v2/token?no_refresh_token=true` See When refresh tokens are not needed for more information. Request body { "client_id": "{APP_ID}" "client_secret": "{APP_SECRET}", "code": "{AUTHORIZATION_CODE}" }
4	Clover backend	Return an access and refresh token pair. Sample response body { "access_token": "{ACCESS_TOKEN}", "access_token_expiration": 1677875430, "refresh_token": "{REFRESH_TOKEN}", "refresh_token_expiration": 1709497830 } Expiration dates are represented as Unix timestamps.

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NOTE
See Sandbox and production environments URLs about which URLs to use in the requests.