BULK STEAM KEY CHECKER
Sent keys to curators, creators, or a giveaway - and now you have no idea which ones were actually redeemed? Paste your list, and check every key against Steam's own records in one run. Green means still usable, red means used.
How it works (and why it's safe)
It uses Steam's own Query CD Key page. Steamworks has a built-in key lookup at partner.steamgames.com - but only one key at a time, by hand. This tool generates a small script that repeats that exact same read-only lookup for your whole list, with a polite 1.5-second pause between queries, and collects the results into a table and CSV.
Your keys never touch our servers. The list is processed entirely in your browser: this page turns it into a script, and the script talks only to partner.steamgames.com inside your own logged-in session. There is no upload, no account to create, and the full script text is readable before you paste it.
It only works for your own keys. Steam shows key details only to the partner account that generated them. Keys from someone else's Steamworks account will come back as "not found / no access" - that's Steam's permission model working as intended.
Why we built it: we run key campaigns for our catalog every week, and "is this key still good?" is a question we hit daily - before re-sending an old key, after a giveaway, or when auditing a curator batch. Manually checking a 200-key list is an afternoon; this does it during a coffee.
Will it work? Yes - it's battle-tested. The exact same lookup powered our internal key-hygiene bot for months (it automatically checked giveaway keys and revoked the ones nobody activated). And if Steam ever changes the page layout, the script tells you on the very first key and stops, instead of guessing its way through your list.
Read-only by design: the script uses Steam's Query action only - it cannot activate, ban, or modify keys. For very large lists, keep the tab open until the run finishes.
Tired of keys vanishing into the void?
Our free Dev Hub gives your game a bundle partner on Steam, and its Creator Hub hands your keys only to human-reviewed creators - with claims tracked per game, so you always know where they went.