Claude Code mod
jc-gearbox
Picks the model once per session and the effort every turn, using TypeSafe's Jev to judge how hard the task is.
Install
/plugin marketplace add KevinYu1580/jcGearbox
/plugin install jc-gearbox@jc-gearboxMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L3Network: network, reads files, reads env vars, reads the transcript, requests an Anthropic credential handle, persists state, draws
- Sees
- classic hooks, every prompt
- Hooks
session.startclassic.SessionStartprompt.submitturn.startturn.stepturn.completeclassic.StopFailureclassic.PostModelSwitchclassic.UserPromptSubmitcommand.run
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
- KevinYu1580/jcGearbox
- Folder
.- Marketplace
jc-gearbox- Author
- KevinYu1580
- Type
- Workflow mods
- License
- MIT
- Last updated
- 27 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is jc-gearbox?
Picks the model once per session and the effort every turn, using TypeSafe's Jev to judge how hard the task is. It is a mod for Claude Code, from KevinYu1580/jcGearbox on GitHub.
What can the jc-gearbox mod access?
Its widest reach is "network" (network, reads files, reads env vars, reads the transcript, requests an Anthropic credential handle, persists state, draws). It sees classic hooks, every prompt. Like any mod, it runs with your permissions.
How do I install jc-gearbox?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add KevinYu1580/jcGearbox and then /plugin install jc-gearbox@jc-gearbox.
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