What is plugin-testing?

A testing plugin for Claude Code plugins that defines evaluation cases and graders, runs them through a verification wrapper, and stores reports for each plugin.

Use it to write plugin evaluations, run the test suite, inspect failures, and maintain per-plugin test reports.

It helps detect behaviour that does not meet expectations without weakening the release check to hide failures.

plugin-testing — Plugin by spumer

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code

/plugin marketplace add spumer/i-m-senior-developer

agentmods

npx agentmods add plugins/spumer/i-m-senior-developer/plugin-testing

Clone the repo

git clone --depth 1 https://github.com/spumer/i-m-senior-developer

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

plugin-testing scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/plugin-testing/.claude-plugin/plugin.json · 10 lines

What it actually says

{
  "name": "plugin-testing",
  "version": "0.1.1",
  "description": "Behavioural testing for Claude Code plugins: author eval cases and graders, run the suite through a verifying wrapper, read failures without weakening the gate, and keep per-plugin test reports.",
  "author": {
    "name": "spumer"
  },
  "keywords": ["plugin-eval", "testing", "graders", "plugin-validate", "release-gate", "reports"]
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

yesterday First seen · 10 lines scan A 114cf24be2f2

Subscribe to this mod's changes

plugin-testing is a plugin published in the GitHub repository spumer/i-m-senior-developer (11 stars, last pushed 10d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Testing

plugin-testing

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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