21 October 2026

دليل · Guide7 min read

اختبر الـ plugin عندك بـ claude plugin eval وشوف إذا كان ينفع فعلاًTest Your Claude Code Plugin with claude plugin eval

You will test your Claude Code plugin with real eval cases and see in numbers whether it improves the result, or whether Claude would have passed without it.

Who this guide is for

Anyone building a plugin or skill for Claude Code who wants proof it works before sharing it with a team.

Key terms

Plugin eval
A shell command, claude plugin eval, that runs your plugin against a suite of test cases and scores each one.
Case
A folder inside evals with a realistic request, written the way a user would type it, plus one or more graders.
Grader
A pass or fail check on what Claude produced. A regex on the reply, whether a tool was called, or a second model judging against a rubric you write.
Baseline
The same case run with no plugin. The gap between the two scores is Δ, which is what the plugin actually added.

The steps

  1. Step 1

    Check the requirements

    You need Claude Code 2.1.269 or later. Run claude --version to check and claude update to upgrade. If git is installed it must be 2.31 or later.

    Every run and every judge grader is a real model call on your account, counted against your plan or API bill. Start with one or two cases.

    A terminal window with the commands claude --version and git --version
    Illustration
    PromptCheck versions
    claude --version
git --version

    Tip: Open the terminal in your plugin's root folder, the one with plugin.json.

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