No accessToken even after successful account linking

I am using version 2.1.2 and Authorization code flow for account linking as specified in https://developers.google.com/actions/identity/oauth2-code-flow.

The entire flow works where my service does issue a valid accessToken and refreshToken to the google and I also get a confirmation in the assistant stating, “Great Nishant, your <bot name> account has been successfully linked with google”. All fine so far.

Now the expectation is that after this point onward whenever I do invoke the bot again, I should get the same accessToken back in conv.user.access.token property, however this field remains empty. I have no idea what am I missing. I have setup dialogFlow integration with “Sign In required” during the invocation time.

Please help.

[Fleker]

In the settings for your Google Home, in the Google Assistant mobile app, there is going to be an option to identify yourself by voice. By default the user is considered anonymous.

[nqd]

I am having the same problem with the request from Google Home.

{"user":{"userId":"xxx","locale":"en-US"},"conversation":{"conversationId":"xxx","type":"NEW"},"inputs": ...}]}

While the request from Web Simulator has accessToken as expected.

I am using Actions SDK.

Any suggestion would be highly appreciated.

Thanks.