What is three-pillars?

A Claude Code plugin that combines test-driven development, group-style design discussion, and saved session context. Test-driven development, or TDD, means writing tests before the code they check.

Use it to guide development through tests, ask several named perspectives to discuss a design, and continue work with session continuity.

It gives coding work a repeatable structure and helps preserve decisions and context between sessions.

three-pillars — Plugin for Claude Code by CurtisThe

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.

Clone the repo

git clone --depth 1 https://github.com/CurtisThe/three-pillars-plugin

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/curtisthe/three-pillars-plugin/three-pillars-plugin/github.svg)](https://agentmods.dev/plugins/curtisthe/three-pillars-plugin/three-pillars-plugin)

Your own site

<a href="https://agentmods.dev/plugins/curtisthe/three-pillars-plugin/three-pillars-plugin"><img src="https://agentmods.dev/badge/plugins/curtisthe/three-pillars-plugin/three-pillars-plugin/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/curtisthe/three-pillars-plugin/three-pillars-plugin"><img src="https://agentmods.dev/badge/plugins/curtisthe/three-pillars-plugin/three-pillars-plugin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

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

When invoked not measured The manifest loads nothing itself; its 39 skills, 58 agents cost 3,897 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

three-pillars 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 today.

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/plugin.json · 75 lines

How it starts

The opening of the file, as written. The whole thing — 75 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "three-pillars",
  "version": "2.5.1",
  "description": "Structured TDD pipeline, council deliberation, and session continuity for Claude Code",
  "author": {
    "name": "Curtis"
  },
  "license": "Apache-2.0",
  "homepage": "https://github.com/CurtisThe/three-pillars-plugin",
  "repository": "https://github.com/CurtisThe/three-pillars-plugin",
  "keywords": ["tdd", "council", "spike", "design", "session"],
  "skills": "./skills/",
  "hooks": "./skills/_shared/hooks/claude-code-hooks.json",
  "agents": [
    "./agents/council-ada-medium.md",
    "./agents/council-ada.md",
    "./agents/council-aristotle-medium.md",
    "./agents/council-aristotle.md",
    "./agents/council-aurelius-medium.md",
    "./agents/council-aurelius.md",
    "./agents/council-feynman-medium.md",
    "./agents/council-feynman.md",
    "./agents/council-kahneman-medium.md",
    "./agents/council-kahneman.md",
    "./agents/council-karpathy-medium.md",
    "./agents/council-karpathy.md",
    "./agents/council-lao-tzu-medium.md",
    "./agents/council-lao-tzu.md",
    "./agents/council-machiavelli-medium.md",
    "./agents/council-machiavelli.md",
    "./agents/council-meadows-medium.md",
    "./agents/council-meadows.md",
    "./agents/council-munger-medium.md",
    "./agents/council-munger.md",
    "./agents/council-musashi-medium.md",
    "./agents/council-musashi.md",
    "./agents/council-rams-medium.md",
    "./agents/council-rams.md",
    "./agents/council-socrates-medium.md",
    "./agents/council-socrates.md",
    "./agents/council-sun-tzu-medium.md",
    "./agents/council-sun-tzu.md",
    "./agents/council-sutskever-medium.md",
    "./agents/council-sutskever.md",
    "./agents/council-taleb-medium.md",
    "./agents/council-taleb.md",
    "./agents/council-torvalds-medium.md",
    "./agents/council-torvalds.md",
    "./agents/council-watts-medium.md",
    "./agents/council-watts.md",
    "./agents/tp-certifier.md",
    "./agents/tp-drafter-xhigh.md",
    "./agents/tp-draf

Read the full file on GitHub · 75 lines

Contents

What it installs

The manifest is a name and a version. 39 skills, 58 agents travel with it, and installing the plugin installs all of them — 3,897 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

2 files beside plugin.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.

today Changed · +37 lines 737293e96ffa
20d ago Changed · +2 lines 50e2414dbc8a
1mo ago First seen · 36 lines scan A 1943d6fb2076

Subscribe to this mod's changes

three-pillars is a plugin published in the GitHub repository CurtisThe/three-pillars-plugin (4 stars, last pushed yesterday), licensed Apache-2.0. 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.

Building agents TDD Testing

jira-pack

Issue-tracker pack: /jira-fix takes a ticket link of any type, verifies tracker access, classifies it as a defect or a change, reproduces the defect or writes a failing acceptance test for the change, routes the work to core executors, comments back with evidence and moves the ticket to the QA column. Opt-in; requires.

atretyak1985/swarmery · not measured

whetstone

Engineering-craft skills: red-green TDD, flaky-test audit, diagnosis, doubt review, grilling, merge-conflict resolution, research reports with grounded claims, HTML reports, skill linting and a column budget. Every gate among them carries a deterministic self-verify.

raisedadead/claude-code-plugins · not measured

three-pillars

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

How it starts

What it installs

What ships with it

What this file has done since we first saw it

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