SteamAuth HubSteamAuth Hub
Steam SSO Platform

Steam authentication as a standalone product for all your websites.

Connect 5+ projects to one auth hub. The user signs in with Steam, you receive a verified token and profile.

Start for freePricing & plansAPI docs
OAuth Flow
  1. 1. Client redirects to /broker/v1/oauth/authorize
  2. 2. Steam OpenID sign-in and callback to hub
  3. 3. Hub issues a `code` to client backend
  4. 4. Backend exchanges `code` for `access_token`

One Steam key for many sites

A central service owns OAuth/OpenID logic while your sites stay simple clients.

Secure code flow

Short-lived authorization codes with server-side token exchange.

Domains and redirect URI

Project callback URL allow-lists and domain verification through `.well-known`.

Fast async API

JSON and form-data support, predictable errors, and simple integration in any stack.