A marketplace definition for a collection of general-purpose coding-agent extensions, including knowledge-base publishing, JavaScript performance checks, screenshot testing, configuration cleanup, and Playwright UI checks.

Use it to publish or consume the listed plugins for Claude Code and Codex, depending on the specific development task.

It provides one catalog entry for finding and installing these related extensions instead of managing each listing separately.

ai-plugins — Plugin by lancewillett

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 lancewillett/ai-plugins

agentmods

npx agentmods add plugins/lancewillett/ai-plugins/marketplace

Clone the repo

git clone --depth 1 https://github.com/lancewillett/ai-plugins

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

ai-plugins 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 2d ago.

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.

.claude-plugin/marketplace.json · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "ai-plugins",
  "owner": {
    "name": "Lance Willett",
    "url": "https://github.com/lancewillett/ai-plugins"
  },
  "metadata": {
    "description": "Public, general-purpose skills and plugins for Claude Code and Codex",
    "version": "1.0.0"
  },
  "plugins": [
    {
      "name": "kb-to-spec",
      "description": "Promote a private Markdown note into a shareable spec committed to a GitHub repo. Works with Claude Code and Codex. De-privatizes content, writes a standalone spec with an Authors header, links back from the private note, and keeps the two files independent.",
      "source": "./plugins/kb-to-spec",
      "version": "1.0.0",
      "author": {
        "name": "Lance Willett"
      },
      "license": "MIT",
      "skills": ["./skills/kb-to-spec"]
    },
    {
      "name": "js-perf-audit",
      "description": "Audit any JS-heavy codebase for performance issues. Checks bundle weight, code splitting, selector memoization, rendering architecture, and performance infrastructure. Produces a findings report with severity ratings and recommendations.",
      "source": "./plugins/js-perf-audit",
      "version": "1.0.0",
      "author": {
        "name": "Lance Willett"
      },
      "license": "MIT",
      "skills": ["./skills/js-perf-audit"]
    },
    {
      "name": "visual-screenshots",
      "description": "Capture before/after screenshots for PRs with visual UI changes using Playwright. Reads the repo's dev-server setup, captures matched before/after shots at multiple viewports, and can upload them straight into the PR comment as inline images. Works on github.com and GitHub Enterprise.",
      "source": "./plugins/visual-screenshots",
      "version": "1.0.0",
      "author": {
        "name": "Lance Willett"
      },
      "license": "MIT",
      "skills": ["./skills/visual-screenshots"]
    },
    {
      "name": "claude-cleanup",
      "description": "Audit and clean up Claude Code configuration. Checks skills, hooks, plugins, config

Read the full file on GitHub · 104 lines

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.

2d ago First seen · 104 lines scan A 71cf4e964a38

Subscribe to this mod's changes

ai-plugins is a plugin published in the GitHub repository lancewillett/ai-plugins (2 stars, last pushed 16d 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.

Browser automation Frontend Testing

ai-plugins

Getting it into your agent

Grade A, and why

Nothing flagged

How it starts

What this file has done since we first saw it

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