Claude Code mod
model-router-slim
Picks the model and the reasoning effort for each task with TypeSafe's Jev, a System One decision model reached either through TypeSafe's own API or the Vercel AI Gateway. Routes subagent models at agent.spawn and the main loop's effort and model at turn.step, in both directions, falling back to the engine's built-in classifier when no key is set.
Install
/plugin marketplace add GambetaClub/model-router
/plugin install model-router-slim@claude-modsMods install like plugins. Run /reload-plugins or start a new session to load it.
What it can access
- Reach
- L3Network: network, drives Claude, reads mod state, persists state, draws
- Sees
- compaction, every prompt, subagent spawns
- Hooks
session.startcommand.runsession.endsession.compactprompt.submitturn.startturn.stepturn.completeagent.spawn
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
- GambetaClub/model-router
- Folder
.- Marketplace
claude-mods- Author
- claude-code-templates
- Type
- Workflow mods
- License
- MIT
- Last updated
- 30 October 2026
- Listed in
- awesome-claude-code-mods
FAQ
What is model-router-slim?
Picks the model and the reasoning effort for each task with TypeSafe's Jev, a System One decision model reached either through TypeSafe's own API or the Vercel AI Gateway. Routes subagent models at agent.spawn and the main loop's effort and model at turn.step, in both directions, falling back to the engine's built-in classifier when no key is set. It is a mod for Claude Code, from GambetaClub/model-router on GitHub.
What can the model-router-slim mod access?
Its widest reach is "network" (network, drives Claude, reads mod state, persists state, draws). It sees compaction, every prompt, subagent spawns. Like any mod, it runs with your permissions.
How do I install model-router-slim?
Inside Claude Code (v2.1.287 or later), run /plugin marketplace add GambetaClub/model-router and then /plugin install model-router-slim@claude-mods.
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