Ossi Browser Bridge for Firefox by Oskar

Connect Codex to Firefox through an authenticated local bridge for user-requested navigation, page reading, clicks, typing, scrolling, and screenshots.

Experimental

Some features may require payment

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About this extension

Ossi Browser Bridge for Firefox lets Codex work in your regular Firefox session only when you explicitly request it.

Features:

Navigate, read pages, click, type into focused fields, scroll, use browser history, reload, and capture visible-tab screenshots.
Reuse existing signed-in Firefox sessions without exporting cookies, history, saved passwords, or Firefox profiles.
Pair the extension with the local Firefox Codex plugin through authenticated loopback WebSockets.
Grant website access per exact public HTTP(S) origin for the current Codex task.
Keep pre-existing tabs and windows user-owned and restrict automatic cleanup to task-created browser state.

Requirements:

Windows desktop
Firefox 142 or newer
Codex with plugin support
The public firefox@firefox-local Codex plugin

This is an experimental preview. The extension has no native host, separate bridge installation, publisher-operated server, analytics, telemetry, or advertising.

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Ossi Browser Bridge for Firefox by Oskar

Required permissions:

Required data collection, according to the developer: