You can find your Master and Write-only key in your profile.

Retrieving the API Keys From the TD Console

  1. Open TD Console.

  2. Access My Settings > API Keys.

  3. Select API Keys.

Retrieving the Master API Key using the TD Toolbelt

Only the Master API key can be retrieved from the command line.
To retrieve the key, execute the following command:

$ td apikey:show