Sign in with the same Google account you use in the StashPaw app.
Signed in as .
Link an e621 account. Generate an API key under Account → Settings → Apps → API keys on e621.net, then enter it below.
Linked e621 account: . There's no remove/manage option here - do that from the app's Accounts screen.
This is the only official website for StashPaw - stashpaw.app. The sign-in button below takes you to the real accounts.google.com to sign in; this page never asks for your Google password itself.