Is it safe to sign in with Steam on third-party sites?
Signing in with Steam uses OpenID, which never shares your password with the site. Here is exactly what a third-party site can and cannot see, and the red flags that mean you should walk away.
Short answer: yes, signing in with Steam is safe — as long as the site uses Steam's official OpenID flow and never asks you to type your Steam password into its own form. With OpenID, you type your password only on Steam's own domain. The third-party site never sees it.
What actually happens when you "Sign in with Steam"
You get redirected to steamcommunity.com. You log in there, on Steam's page, with Steam's own form. Steam then sends the site back a single piece of information: your SteamID, a public number. The site verifies that assertion directly with Steam's servers before trusting it.
That's the whole exchange. Your password never leaves Steam. Your credit card, your email, your friends list, your private messages — none of it is part of the handshake.
What a third-party site can see
- Your SteamID — a public identifier
- Whatever your privacy settings make public — typically your profile name, avatar, and, if you've allowed it, your game list and playtime
That last point is the important one: a backlog tool can only read your library if your "Game details" privacy setting is set to Public. If it's private, the site sees nothing — which is a useful way to verify a site is playing by the rules.
What it cannot see
- Your password
- Your payment methods or purchase history
- Your email address (Steam OpenID does not share it)
- Anything your privacy settings keep private
It also cannot act as you. OpenID is an identity assertion, not an access token — the site cannot buy games, send messages, or trade items on your behalf.
The red flags that should stop you
- The site asks for your Steam password directly. This is the big one. A legitimate site never has a Steam password field. If you see one, leave.
- The login page isn't on steamcommunity.com. Check the address bar before typing. Phishing sites clone Steam's design pixel-for-pixel; the domain is what gives them away.
- The site asks for your API key, trade URL, or 2FA code to do something that shouldn't need them.
- It promises free games, skins, or trades in exchange for signing in. Item-scam sites are the main reason Steam phishing exists.
How to check before you trust a tool
Look at the address bar during login — it must say steamcommunity.com. Look for a security page explaining what the site stores. And ask what the tool actually needs: a backlog planner needs your game list and playtime. It does not need your password, and it should say so plainly.
How GamersPilot handles it
GamersPilot uses Steam's OpenID flow only. We never see or store a Steam password, because one is never sent to us. We read your public library metadata — titles and playtime — and nothing else. You can read the details on our security page.
TL;DR
- Sign in with Steam is safe: it uses OpenID, so your password stays on Steam's domain.
- The site receives only your public SteamID, plus whatever your privacy settings expose.
- It cannot see your password, payment details, or email, and cannot act on your account.
- The one unforgivable red flag: a site that asks you to type your Steam password into its own form.