Anyway to externally connect to extension to send a message?

[ddeisadze]

I want to use externally_connectable in MV3, i dont see a whole lot of documentation.

Here is the use case: I want to login from my webapp, and send the auth message (and a token) to the background script.

[aklinker1]

WXT doesn't provide any custom APIs or helpers for this, you'll have to use the standard API.

Here's Chrome's docs for sending messages from your web-app to your extension:
https://developer.chrome.com/docs/extensions/develop/concepts/messaging#external-webpage