OAuth Playground

Another option for generating OAuth2 credentials is to use the OAuth2 Playground. The OAuth2 Playground, in conjunction with the Google API Console, allows you to manually create OAuth2 tokens.


Before creating credentials, you need to create a project with the AdMob API enabled.

Get a client ID and client secret

If you do not have an existing credential:

  1. Open the Google API Console Credentials page.

  2. From the project drop-down, select an existing project or create a new one.

  3. On the Credentials page, select Create credentials, then select OAuth client ID.

  4. Under Application type, choose Web application.

  5. Under Authorized redirect URIs, add a line with: https://developers.google.com/oauthplayground

  6. Click Create.

  7. On the Client ID page, take note of the client ID and client secret. You'll need these in the next step.

If you have an existing credential, you can reuse it by setting the Authorized redirect URIs as above.

Generate tokens

  1. Go to the OAuth2 Playground, (using this link should pre-populate some key values for you).

  2. Click the gear icon in the upper right corner and check the box labeled Use your own OAuth credentials (if it isn't already checked).

  3. Make sure that:

    • OAuth flow is set to Server-side.
    • Access type is set to Offline (this ensures you get a refresh token and an access token, instead of just an access token).
  4. Enter the OAuth2 client ID and OAuth2 client secret you obtained above.

    playground settings

  5. In the section labeled Step 1 - Select & authorize APIs, enter the following URL in the text box at the bottom, if it's not already there, then click Authorize APIs:


  6. If prompted, sign in to the account to which you want to grant access and authorization. Otherwise, confirm that the current Google user in the top right corner is the AdMob account for whom you want to obtain credentials.

  7. A prompt appears indicating your app would like to See your AdMob data. Click Accept to continue.

  8. In the tab labeled Step 2 - Exchange authorization code for tokens, an Authorization code should appear. Click Exchange authorization code for tokens.

    playground authcode token

  9. If all goes well, the Refresh token and Access token should be filled in for you (you may have to re-expand Step 2 - Exchange authorization code for tokens):

    playground refresh token

  10. Copy the Refresh token into the configuration file for your client library of choice, along with the client ID and client secret.

  11. Configure a client library for OAuth in the AdMob API.

Remove the OAuth2 Playground from your client ID

Now that you have a refresh token, you no longer need the OAuth2 Playground to be an authorized redirect URI. To remove it from the list of authorized redirect URIs:

  1. Go to the Google API Console Credentials page.

  2. From the project drop-down, select your project.

  3. On the Credentials page, click the client ID name to edit.

  4. Remove https://developers.google.com/oauthplayground from the Authorized redirect URIs. Note that you must leave at least one redirect URI in place.

  5. Click Save.