Use the settings panel to tune how the Codex app behaves, how it opens files, and how it connects to tools. Open Settings from the app menu or press Cmd+,.
General
Choose where files open and how much command output appears in threads. You can also require Cmd+Enter for multiline prompts or prevent sleep while a thread runs.
Notifications
Choose when turn completion notifications appear, and whether the app should prompt for notification permissions.
Agent configuration
Codex agents in the app inherit the same configuration as the IDE and CLI extension.
Use the in-app controls for common settings, or edit config.toml for advanced
options. See Codex security and
config basics for more detail.
Appearance
In Settings, you can change the Codex app appearance by choosing a base theme, adjusting accent, background, and foreground colors, and changing the UI and code fonts. You can also share your custom theme with friends.
Git
Use Git settings to standardize branch naming and choose whether Codex uses force pushes. You can also set prompts that Codex uses to generate commit messages and pull request descriptions.
Integrations & MCP
Connect external tools via MCP (Model Context Protocol). Enable recommended servers or
add your own. If a server requires OAuth, the app starts the auth flow. These settings
also apply to the Codex CLI and IDE extension because the MCP configuration lives in
config.toml. See the Model Context Protocol docs for details.
Personalization
Choose Friendly, Pragmatic, or None as your default personality. Use None to disable personality instructions. You can update this at any time.
You can also add your own custom instructions. Editing custom instructions updates your
personal instructions in AGENTS.md.
Archived threads
The Archived threads section lists archived chats with dates and project context. Use Unarchive to restore a thread.