I'm then redirecting back to the value that was sent to me in redirect_uri, appending authorization_code= Upon receiving the access_token, I'm extracting the 'sub' claim from the JWT, which is the unique customer identifier in our database. The customer signs in to this, and I get an id_token and access_token back from that. Just been through a similar bit of head scratching, so will explain what I've done while it's fresh in my headįor my example, I wanted Facebook to redirect out to my main login page, which is an open id connect implementation. I followed the steps, called the account linking endpoint to get the PSID, which I already had since it is how I send messages with my bot, but I don't really see the point on this button. I strongly believe there's something I'm missing or something I'm not understanding, but I don't know what. What's the use on this button? I know it is supposed to link accounts, but what do I need the account_linking_token for? I can already send in a regular web_url button the user psid, I can easily send it on my login button as a parameter and link account to this psid if credentials are correct. These steps are very easy to follow, except there's no help whatsoever on how to actually link the account, I get the redirect_uri and the account_linking_token as parameters on my callback website where I enter the account login and password.Īnd then, I link the accounts.? How exactly? This step should only be used in special cases when you need the user's PSID as part of the linking process. Optionally retrieve the user's page-scoped ID (PSID) using the account linking endpoint.

Once linking is complete, redirect users to the location provided by redirect_uri and append a authorization_code parameter (defined by you) to confirm linking.

The redirect_uri and account_linking_token parameters are appended to your registered callback.

Messenger Platform invokes the registered URL when a user starts the account linking flow. Register a callback URL using Log In Button. There are 4 easy steps described in the documentation about account linking for the messenger platform:

Go to my messenger account