Claude Code mod

model-pin

Pin a project to one model, show a drift badge when the session leaves it, and re-apply the pin once.

Workflow mods Plugin marketplaceValidates on Claude Code 2.1.316 Source

Install

Inside Claude Code

/plugin marketplace add Joseph-Ayoub/claude-mods
/plugin install model-pin@joseph-mods

Mods install like plugins. Run /reload-plugins or start a new session to load it.

What it can access

Reach: L2Writes or runs: drives Claude, writes the prompt box, reads files, reads settings, reads the prompt box, reads mod state, persists state, draws
Sees: classic hooks
Hooks: session.startclassic.SessionStartclassic.PostModelSwitchclassic.PreModelSwitchcommand.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.

Claude Code docs

Details

Repository: Joseph-Ayoub/claude-mods
Folder: model-pin
Marketplace: joseph-mods
Author: Joseph Ayoub
Type: Workflow mods
License: MIT
Last updated: 12 October 2026
Listed in: awesome-claude-code-mods

FAQ

What is model-pin?

Pin a project to one model, show a drift badge when the session leaves it, and re-apply the pin once. It is a mod for Claude Code, from Joseph-Ayoub/claude-mods on GitHub.

What can the model-pin mod access?

Its widest reach is "writes or runs" (drives Claude, writes the prompt box, reads files, reads settings, reads the prompt box, reads mod state, persists state, draws). It sees classic hooks. Like any mod, it runs with your permissions.

How do I install model-pin?

Inside Claude Code (v2.1.287 or later), run /plugin marketplace add Joseph-Ayoub/claude-mods and then /plugin install model-pin@joseph-mods.

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