Unable to reach cursor with anthropic api key

I cannot reach cursor with my anthropic key (I know this key works because I tried it outside of cursor). See screenshot below

I am on a mac, i tried quitting and reinstalling cursor, and no matter what query I try, cannot access anthropic. I can access some other models though such as openai ones. I can’t access on my own api key, I can still access if I turn off my api key

Are you currently connected to a corporate VPN or proxy? No

Your Cursor version number (Help > About): Version: 0.46.8 (Universal)

VSCode Version: 1.96.2
Commit: be4f0962469499f009005e66867c8402202ff0b0
Date: 2025-02-28T19:32:53.996Z
Electron: 32.2.6
Chromium: 128.0.6613.186
Node.js: 20.18.1
V8: 12.8.374.38-electron.0
OS: Darwin arm64 24.1.0

Whether this started happening recently or has been ongoing: Started happening yesterday afternoon

If you’re able to use Claude when the Anthropic key is turned off (using Cursor’s built-in models): I can use anthropic with the key turned off. it doesn’t work with the key on.

Just restarted and tried 2 different brand new keys, both don’t work. Same error message as previously, but new request ID


I figured out this gnarly bug. When I cancel the override on the openai URL, then I can run anthropic via api key again with getting that “unauthorized” error. @truell20 but I would still prefer to be able to use my firebase R1 via openai override + anthropic at the same time.