I’m guessing frankly this is a known and expected issue, but I’m unable to auth with the tool at the moment.

When running basecamp auth login, the OAuth flow fails with:

warning: OAuth discovery failed for https://3.basecampapi.com, using Launchpad fallback

The browser opens to https://launchpad.37signals.com/authorization/new but displays:

Provided redirect_uri is not approved

This is a server-side issue — 37signals hasn't registered the CLI's OAuth redirect URI with their Launchpad authorization server. The CLI itself is installed and functioning correctly (basecamp doctor passes all non-auth checks).

Not sure if an endpoint just isn’t connected or something, but I’ve been unable to test out the tool so far! (Sorry if this is a pointless issue I’m creating.)