How to Revoke an API Key on Steam
Revoking your Steam API key is pretty straightforward! First, head over to the Steam Community website and log in. Then, navigate to the 'Web API Key' page under your account settings. You should see your current API key there, with an option to 'Revoke'. Just click that, and you're all done. Steam might ask for confirmation, so go ahead and confirm if it does. Voila, your API key is no more!
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Just delete it lol!
Did it a while back. It's easy. Log into Steam, find the API section in your settings, and there should be a big 'Revoke' button. Can't miss it. Make sure you really want to though, getting a new one might mess with your apps.
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