Claude Code mod
codemode
One tool that runs a JavaScript program over Claude Code's own tools and returns only its final value.
Install
/plugin marketplace add brianjmeier/claude-codemode
/plugin install codemode@claude-codemodeMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L2Writes or runs: drives Claude, reads mod state, draws
- Sees
- mcp__codemode__run calls
- Draws in
ToolUseToolResult- Hooks
session.starttool.callturn.stepui.render
From a static scan of the mod's code by awesome-claude-code-mods. It shows what the code asks for, not a security review.
How Claude Code mods work
- A mod is a plugin with a JavaScript or TypeScript module that runs inside Claude Code (version 2.1.287 or later). It can draw panes beside the transcript, a band above the prompt, buttons and toasts, restyle the spinner and tool rows, and watch or rewrite tool calls and prompts.
- It installs like any plugin: add its marketplace with /plugin marketplace add owner/repo, then /plugin install name@marketplace.
- Check what a mod can reach before installing: it runs with your permissions. Reach goes from drawing only, to reading files, to writing files or running processes, to the network. Run claude plugin validate on a clone to list its hooks and calls without running it.
- Turn one off from the Installed tab in /plugin, or start Claude Code with --safe-mode to skip every customization for a session.
Details
- Repository
- brianjmeier/claude-codemode
- Folder
.- Marketplace
claude-codemode- Author
- Brian Meier
- Type
- Workflow mods
- License
- MIT
- Last updated
- 26 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is codemode?
One tool that runs a JavaScript program over Claude Code's own tools and returns only its final value. It is a mod for Claude Code, from brianjmeier/claude-codemode on GitHub.
What can the codemode mod access?
Its widest reach is "writes or runs" (drives Claude, reads mod state, draws). It sees mcp__codemode__run calls. It draws in ToolUse, ToolResult. Like any mod, it runs with your permissions.
How do I install codemode?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add brianjmeier/claude-codemode and then /plugin install codemode@claude-codemode.
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