I built a GNOME extension for Codex with local/remote history, live filters, Markdown export, and a read-only MCP server

Reddit r/artificial 04/19/26, 08:45 AM Tools

Summary

A developer built a comprehensive GNOME Shell extension for Codex that adds native GTK history management, local/remote session browsing, Markdown export, and a read-only MCP server with multi-device pairing and security controls.

I wanted Codex to feel like a real GNOME app instead of just a terminal or editor workflow, so I built a GNOME Shell extension around it. It currently does all of this: \- Codex usage in the GNOME top bar \- native GTK history window \- local session history browsing \- paired remote machine history browsing over LAN \- live session updates \- filters for All / Messages / Tools / Thinking / System / Errors \- in-session search \- Markdown export for one session or all sessions from a source \- read-only MCP server for history and usage \- multi-language support A few design choices mattered a lot to me: \- native GNOME/Libadwaita UI, not a webview \- read-only remote access \- explicit pairing between machines \- revocable trust per device \- read-only MCP, local by default, token-protected by default It ended up being much more ambitious than a typical GNOME extension, but I wanted something that actually feels integrated into the desktop. 😊

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