Register an Auth Bot, get a Client ID and Secret, and let P4rty! Host users sign into your app with the account they already have here. No password sharing, no separate signup form.
Create an Auth Bot from your dashboard. Set a name, bot username, picture, and description. You get a Client ID and a Client Secret. The secret is shown once, so save it somewhere safe.
Link users to p4rty.host/userAuth.php?cid=YOUR_CLIENT_ID. They will see a clear warning that your app is unofficial, then choose whether to authorize it.
If you set a redirect URI, the user is sent back with a one-time code. Post it to dev_token.php with your Client ID and Secret to get their username, picture, and account status back as JSON.
Only you plus up to 3 people you add by username or email.
Add as many usernames or emails as you like from your dashboard.
Anyone can authorize it. The unofficial-app warning is always shown first.
Auth Bots any user can authorize.
Verified developers get a badge on their profile and next to every app they publish, so users can see it was reviewed by P4rty! Host staff. Every app, verified or not, still shows the unofficial-app warning before anyone authorizes it.