United States

Canada

Developers who have an app with a non-expiring token need to exchange their app’s legacy API token for an expiring access and refresh token pair. The token migration flow includes the option to use Proof key for code exchange (PKCE).

Token migration flow with PKCE option

Migrate legacy tokens

🚧
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 exchange a legacy token for a new access and refresh token pair:

Step	Who/what	What
1	Developer app	If using PKCE, generate a `code_verifier` and `code_challenge` using the method of your choice.
2	Developer app	Request an authorization code. Send a POST request to `/oauth/token/migrate_v2`. Include the merchant ID, app ID, legacy API token, and if using PKCE, code challenge in the request body. Request POST /oauth/token/migrate_v2 Request body { "merchant_uuid": "{MERCHANT_ID}", "app_uuid": "{APP_ID}", "auth_token": "{LEGACY_API_TOKEN}" "code_challenge": "{CODE_CHALLENGE}" }
3	Clover backend	Return authorization code. Sample response body { "authorization_code": "{AUTHORIZATION_CODE}", "expiration": 1678489882 }
4	Developer app	Request an access token pair. Send a POST request to `/oauth/v2/token`. Include the client ID, client secret (if a high trust app), auth code, and if using PKCE, code verifier in the request body. Request POST /oauth/v2/token Request body { "client_id": "{APP_ID}" "client_secret": "{APP_SECRET}", -> If a high trust app "code": "{AUTHORIZATION_CODE}", "code_verifier": "{CODE_VERIFIER}" -> If using PKCE }
5	Clover backend	Return new access and refresh tokens. Sample response body { "access_token": "{ACCESS_TOKEN}", "access_token_expiration": 1677875430, "refresh_token": "{REFRESH_TOKEN}", "refresh_token_expiration": 1709497830 } Note: The response body indicates when the access and refresh tokens expire. The expiration dates are represented as Unix timestamps.

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