simplify-code

simplify-code is a skill for Claude Code, Codex from HezaoHezao/poirot. It costs 15 tokens per session (1,884 once invoked), scanned A, original, MIT.

A three-part review method for cleaning up recent code changes by checking reuse, code quality, and efficiency in sequence.

In plain words
What is it for?
It helps review or simplify recent changes, optionally focusing on reuse, quality, or efficiency, and can report findings without editing code.
Why use it?
Separate focused reviews make it easier to find duplicated logic, quality problems, and unnecessary work without mixing all concerns together.

Skill for Claude CodeCodex

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/hezaohezao/poirot/simplify-code
Any agent
npx skills add HezaoHezao/poirot --skill simplify-code
Clone the repo
git clone --depth 1 https://github.com/HezaoHezao/poirot

Made for: Claude Code, Codex.

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 simplify-code

README.md
[![agentmods](https://agentmods.dev/badge/skills/hezaohezao/poirot/simplify-code.svg)](https://agentmods.dev/skills/hezaohezao/poirot/simplify-code)
Your own site
<a href="https://agentmods.dev/skills/hezaohezao/poirot/simplify-code"><img src="https://agentmods.dev/badge/skills/hezaohezao/poirot/simplify-code.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,884 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 $0.00015 $0.01884
Opus 5 $0.00008 $0.00942
Sonnet 5 $0.00003 $0.00377
Haiku 4.5 $0.00002 $0.00188

Measured 4d ago against content hash d468e9953f08, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

simplify-code 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.

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.

poirot/backend/agents/skill/builtin_skills/core/simplify-code/SKILL.md · 173 lines

How it starts

The opening of the file, as written. The whole thing — 173 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Simplify Code — Sequential Review & Cleanup

Review your recent code changes with three focused lenses, aggregate findings, and apply the fixes worth applying.

Core principle: Three narrow reviews beat one broad review. Each one deeply searches the codebase for a single class of problem — reuse, quality, efficiency — without diluting attention across all three.

Poirot note: The original skill runs 3 reviewers in parallel via subagent delegation. Poirot has no subagents, so this version runs the 3 lenses sequentially in the same context. The methodology is identical; only the concurrency is lost.

When to Use

Trigger this skill when the user says any of:

  • "simplify" / "simplify my changes" / "simplify these changes"
  • "review my code" / "review my recent changes" / "clean up my changes"

Optional modifiers the user may add — honor them:

  • Focus: "simplify focus on efficiency" → run only the efficiency lens. Recognized focuses: reuse, quality, efficiency.
  • Dry run: "simplify but don't change anything" / "just report" → run the three lenses, present findings, apply NOTHING. Ask before applying.
  • Scope: "simplify the last commit" / "simplify staged" / "simplify src/foo.py" → narrow the diff source accordingly.

Do NOT auto-run this after every edit. Invoke it only when the user asks.

The Process

Phase 1 — Identify the changes

Capture the diff to review. Pick the source by what the user asked for:

# 1. Default: uncommitted working-tree changes (tracked files)
git diff

# 2. If that's empty, include staged changes
git diff HEAD

# 3. Scoped variants:
git diff --staged                 # "staged changes"
git diff HEAD~1                    # "the last commit"
git diff main...HEAD              # "this branch" / "my PR"
git diff -- src/foo.py            # specific file(s)

If git diff and git diff HEAD are both empty, fall back to files the user explicitly named or recently edited in this session. If you can't find any changed code, say so and stop.

Read the full file on GitHub · 173 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.

  1. 4d ago First seen · 173 lines · 15 tokens per session scan A d468e9953f08

Subscribe to this mod's changes

simplify-code is a skill published in the GitHub repository HezaoHezao/poirot (213 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 1,884 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 2026-08-30.

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