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Twitch#

Lets people sign in with their Twitch account, through Twitch's OpenID Connect sign-in. Last checked against Twitch's documentation on 31 October 2026.

Set it up#

  1. Run leptoskit auth provider add twitch. It adds:

    [auth.providers.twitch]
client_id_env = "TWITCH_CLIENT_ID"
client_secret_env = "TWITCH_CLIENT_SECRET"

  2. In the Twitch developer console, register an application with the category "Website Integration" and the client type "Confidential".

  3. Add the OAuth Redirect URLs https://myapp.com/auth/callback/twitch, and http://localhost:3000/auth/callback/twitch for development.

  4. Set TWITCH_CLIENT_ID and TWITCH_CLIENT_SECRET.

  5. Turn on the auth-providers feature, and run leptoskit auth doctor.

What sign-in gets#

Twitch's ID token: the person's Twitch user ID, their username, picture, and email address with Twitch's email_verified flag. Twitch only puts the address and username in the token when the sign-in asks for each by name, so leptoskit sends Twitch's claims parameter for them, along with the openid and user:read:email scopes.

Platforms#

It works on the web, and in iOS, macOS, and Android apps through the system browser, with the same redirect URIs: the browser comes back to your site, which sends it on to the app. See Sign-in for each platform.

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