tp-implementation-audit

tp-implementation-audit is a skill for Claude Code, Codex from CurtisThe/three-pillars-plugin. It costs 26 tokens per session (2,509 once invoked), scanned A, original, Apache-2.0.

A final review of a completed implementation against its design documents and plan. It checks whether the finished code matches what was intended.

In plain words
What is it for?
Use it at the end of a project to audit the implementation against the design, detailed design, and completed plan.
Why use it?
It can reveal missing, altered, or incomplete work after all planned phases are finished.

Skill for Claude CodeCodex

Part of the three-pillars plugin — 37 skills, 20 agents shipped together

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.

agentmods
npx agentmods add skills/curtisthe/three-pillars-plugin/tp-implementation-audit
Any agent
npx skills add CurtisThe/three-pillars-plugin --skill tp-implementation-audit
Clone the repo
git clone --depth 1 https://github.com/CurtisThe/three-pillars-plugin

Made for: Claude Code, Codex.

Or install three-pillars, the plugin that ships this one along with the rest of its 37 skills, 20 agents.

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.

agentmods badge for tp-implementation-audit

README.md
[![agentmods](https://agentmods.dev/badge/skills/curtisthe/three-pillars-plugin/tp-implementation-audit.svg)](https://agentmods.dev/skills/curtisthe/three-pillars-plugin/tp-implementation-audit)
Your own site
<a href="https://agentmods.dev/skills/curtisthe/three-pillars-plugin/tp-implementation-audit"><img src="https://agentmods.dev/badge/skills/curtisthe/three-pillars-plugin/tp-implementation-audit.svg" alt="Measured on agentmods" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,509 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00026 $0.02509
Opus 5 $0.00013 $0.01255
Sonnet 5 $0.00005 $0.00502
Haiku 4.5 $0.00003 $0.00251

Measured 4d ago against content hash 72d942262322, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tp-implementation-audit 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 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/test_implementation_audit_skill_md.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/tp-implementation-audit/SKILL.md · 162 lines

How it starts

The opening of the file, as written. The whole thing — 162 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Implementation Audit

Comprehensive review of a completed implementation against both design documents. This runs after all phases are done (unlike /tp-phase-review which reviews a single phase). It answers: "Did we build what we designed?"

Argument: {design-name} (required) — must match an existing directory under three-pillars-docs/tp-designs/.

Prerequisites

  • three-pillars-docs/tp-designs/{design-name}/design.md must exist.
  • three-pillars-docs/tp-designs/{design-name}/detailed-design.md must exist.
  • three-pillars-docs/tp-designs/{design-name}/plan.md must exist with all phases marked as Done (or Skipped/Blocked).

Steps

  1. Run first-run preflight per skills/_shared/first-run.md.

0. Preflight

Run the collaboration preflight per skills/_shared/collaboration.md with phase: "implementation-audit". This verifies the branch and refreshes the lock so the final audit artifact is written by the rightful owner. Honor --force-takeover if passed.

0b. Repo-map preamble (optional)

Per skills/_shared/repo-map-preamble.md. If aider is on PATH, generate a structural map of the codebase before walking design vs. implementation. Use it to focus interface-fidelity checks in Step 3 on files PageRank surfaces as load-bearing.

1. Load all design artifacts

Read design.md, detailed-design.md, plan.md, and any review.md files from the design directory. Do not skim — read fully. Also read project docs per skills/_shared/read-project-docs.md for project context.

2. Verify scope coverage against design.md

For EVERY item in design.md, verify it was implemented:

  • Each "In scope" bullet → trace to implemented code. Is it done?
  • Each entity → does it exist in the codebase with the described relationships?
  • Each behavior → is it implemented and tested?
  • Each constraint → is it respected? (performance, compatibility, resource limits)
  • "Out of scope" items → verify nothing was accidentally implemented that shouldn't have been (scope creep).

Read the full file on GitHub · 162 lines

Files

What ships with it

1 file beside SKILL.md 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. 4d ago First seen · 162 lines · 26 tokens per session scan A 72d942262322

Subscribe to this mod's changes

tp-implementation-audit is a skill published in the GitHub repository CurtisThe/three-pillars-plugin (4 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 26 tokens to every session and 2,509 once invoked, about $0.0001 per session on Opus 5. 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.

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