25 October 2026

دليل · Guide9 min read

ابنِ أول mod لـ Claude Code وافحص أي mod قبل ما تثق فيهBuild Your First Claude Code Mod and Vet Any Mod Before You Trust It

Build a small mod that counts tool calls inside Claude Code and adds a /tally command, then learn how to vet any mod before it runs and how to turn it off.

Who this guide is for

Developers and Claude Code users who want to customize the interface and behavior with a little code, or try ready made mods safely.

Key terms

mod
A plugin with a JavaScript or TypeScript entry file. Claude Code calls its functions when events happen, like a tool call or the interface being drawn, so it can change how Claude Code looks and behaves.
hook
A function inside the mod tied to one event. It can watch the event, change it, or handle it itself.
hooks module
The main code file of the mod. Claude Code calls the register function in it on load, and it registers every hook.
plugin-dir
A flag that loads a plugin folder for one session without installing it. Good for development and trials.

The steps

  1. Step 1

    Check that mods can run for you

    Mods need Claude Code v2.1.287 or later, and they are on by default. In the Desktop app, the bundled copy supports them from v2.1.286.

    Run the command below in your terminal and read the version. If it is older, update Claude Code.

    Then open Claude Code and type /plugin. A dim line under the tabs shows how many mods are active and their names.

    A terminal window with the command claude --version to check the version
    Illustration
    PromptVersion check
    claude --version

    Tip: A mod is not a skill. A skill is instructions Claude reads. A mod is code that runs inside Claude Code itself.

6 more steps wait for you after access

With the ready prompts and the takeaway

Bought this before?

Bought this before? Restore your access

Your access is tied to your email. Enter it here and the content opens right away, any time, on any device

Most value

Start building with me now

We sit together, break down your problem, and I build the AI solution with you step by step

60minutes
  • A private session with you
  • Real building during the session
  • Results you take with you when we finish
Book a build session

100% free

A free consultation about your problem

Start