piercelamb-plugins marketplace

A collection of Claude Code plugins for breaking down project requirements and planning development work. It includes a tool for deep planning with research, interviews, external language-model review, and a TDD approach; TDD means writing tests before the code they check.

In plain words
What is it for?
Use it to split project requirements into scoped units and create detailed implementation plans before coding.
Why use it?
It helps turn vague requests into smaller, clearer pieces and gives planning work a structured review process.

Plugin for Claude Code

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 piercelamb/deep-plan
agentmods
npx agentmods add plugins/piercelamb/deep-plan/marketplace
Clone the repo
git clone --depth 1 https://github.com/piercelamb/deep-plan

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 100% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

piercelamb-plugins marketplace 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.

Origin

This is a copy

100% identical to piercelamb-plugins marketplace — 10 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.claude-plugin/marketplace.json · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "$schema": "https://anthropic.com/claude-code/marketplace.schema.json",
  "name": "piercelamb-plugins",
  "description": "Claude Code plugins by Pierce Lamb",
  "version": "1.1.7",
  "owner": {
    "name": "Pierce Lamb",
    "url": "https://github.com/piercelamb"
  },
  "plugins": [
    {
      "name": "deep-project",
      "description": "Split vague project requirements into well-scoped units for /deep-plan",
      "version": "0.2.1",
      "author": {
        "name": "piercelamb",
        "url": "https://github.com/piercelamb"
      },
      "source": {
        "source": "url",
        "url": "https://github.com/piercelamb/deep-project.git"
      },
      "category": "development",
      "homepage": "https://github.com/piercelamb/deep-project",
      "tags": ["planning", "decomposition", "project-management", "requirements"]
    },
    {
      "name": "deep-plan",
      "description": "AI-assisted deep planning with research, interview, external LLM review, and TDD approach",
      "version": "0.3.2",
      "author": {
        "name": "piercelamb",
        "url": "https://github.com/piercelamb"
      },
      "source": "./",
      "category": "development",
      "homepage": "https://github.com/piercelamb/deep-plan",
      "tags": ["planning", "tdd", "architecture", "llm-review", "implementation"]
    },
    {
      "name": "deep-implement",
      "description": "Implement code from /deep-plan sections with TDD, code review, and git workflow",
      "version": "0.2.1",
      "author": {
        "name": "piercelamb",
        "url": "https://github.com/piercelamb"
      },
      "source": {
        "source": "url",
        "url": "https://github.com/piercelamb/deep-implement.git"
      },
      "category": "development",
      "homepage": "https://github.com/piercelamb/deep-implement",
      "tags": ["implementation", "tdd", "code-review", "git", "workflow"]
    },
    {
      "name": "deep-sota",
      "description": "Paper- and repo-grounded research over the

Read the full file on GitHub · 90 lines

Files

What ships with it

1 file beside marketplace.json in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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.

  1. 2d ago First seen · 90 lines scan A 092b0b844495

Subscribe to this mod's changes

piercelamb-plugins marketplace is a plugin published in the GitHub repository piercelamb/deep-plan (104 stars, last pushed 2mo 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. It is 100% identical to piercelamb-plugins marketplace, differing in 10 lines, and is treated as a copy.

Related

Other plugins, from other repositories