This setting does exist for "Universal Autofill" [1] which is what I use instead of any browser extensions because I don't want to get phished when I'm not at my best. [2] [3]

On the Mac app, the setting is at the bottom of the General settings screen.

The downside to forgoing the browser extensions is that creating new logins is painfully manual. The risks of using the extensions just freak me out too much.

[1]: https://support.1password.com/mac-universal-autofill/

[2]: https://hudlow.org/2026/practical-antiforgery#two-steps-forw...

[3]: https://hudlow.org/2026/practical-antiforgery/demo/1password