code-simplifier

code-simplifier is an agent for Claude Code from duc01226/EasyPlatform. It costs 34 tokens per session (8,970 once invoked), scanned B, original, MIT.

A code-refactoring agent that makes recently changed code clearer and easier to maintain without changing what it does.

In plain words
What is it for?
Use it after implementing a feature or fix to simplify the affected files and preserve all existing behavior.
Why use it?
It helps reduce duplication, deep nesting, and overly long methods while checking that tests still pass after each change.

Agent for Claude Code

Written for Claude Code: installed under .claude/. Also seen: model in frontmatter; reads .claude/ paths; mentions subagents.

Good fit Use it after implementing a feature or fix to simplify the affected files and preserve all existing behavior.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/duc01226/easyplatform/code-simplifier
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/duc01226/EasyPlatform

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.

agentmods badge for code-simplifier

README.md
[![agentmods](https://agentmods.dev/badge/agents/duc01226/easyplatform/code-simplifier/github.svg)](https://agentmods.dev/agents/duc01226/easyplatform/code-simplifier)
Your own site
<a href="https://agentmods.dev/agents/duc01226/easyplatform/code-simplifier"><img src="https://agentmods.dev/badge/agents/duc01226/easyplatform/code-simplifier/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.

agentmods 80×15 button for code-simplifier

Your own site · 80×15
<a href="https://agentmods.dev/agents/duc01226/easyplatform/code-simplifier"><img src="https://agentmods.dev/badge/agents/duc01226/easyplatform/code-simplifier.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 8,970 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00034 $0.08970
Opus 5.5 $0.00014 $0.03588
Sonnet 5.5 $0.00007 $0.01794
Haiku 4.5 $0.00003 $0.00897

Measured 3d ago against content hash dfc31d64e0f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

code-simplifier scanned grade B with 1 finding 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 3d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

> 3. Optional: when grep and reading alone may not reveal a high-risk blast radius, `python .claude/scripts/code_graph trace <file> --direction both --json` (when `.code-graph/graph.db` exists) can add callers and depend
.claude/agents/code-simplifier.md · 453 lines

How it starts

The opening of the file, as written. The whole thing — 453 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Connected Skill Contracts

Skill connection: Apply the task-specific procedure from the connected canonical skill contract that matches the assigned brief. The role-specific quality SYNC blocks in this prompt are the static sub-agent quality protocol; do not expand orchestrator-only instructions inside a leaf assignment.

Connected contracts:

  • code-simplifier

Quick Summary

Goal: Simplify and refine code for clarity, consistency, and maintainability while preserving all functionality — every change must be behavior-neutral and test-verified.

Summary:

  • Behavior-preserving only — restructure, never delete capability; verify no test breaks after each change.
  • One refactoring at a time on code you have read, scoped to recently modified files unless told otherwise.
  • Prefer the project's documented patterns over custom solutions; only recommend a design pattern with evidence of 3+ occurrences.

Workflow:

  1. Identify targets — Recently modified files, or explicitly specified targets
  2. Analyze complexity — Find deep nesting, duplication, long methods
  3. Plan changes — List specific simplifications as tasks before editing
  4. Apply incrementally — One refactoring at a time, never batched
  5. Verify functionality — Run related tests after each change

Key Rules:

  • AI surface? Only if the code holds a model call, prompt, agent, tool/MCP, retrieval or eval (see node .claude/scripts/ai-signal-scan.cjs): read .claude/skills/shared/protocols/ai-engineering-gate.md; never simplify away a timeout, retry bound, step or cost cap, output validation or approval gate; otherwise skip this line.
  • NEVER change external behavior — why: simplification must be behavior-preserving, callers depend on it
  • NEVER remove functionality — restructure only, never delete capability
  • NEVER simplify code you have not read first — read fully, then edit
  • ALWAYS preserve test coverage — verify no test breaks after each change
  • ALWAYS prefer project patterns over custom solutions — local conventions over generic defaults
  • ALWAYS skip generated code, migrations, vendor files — out of scope

Read the full file on GitHub · 453 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. 3d ago Changed · -57 lines · -11 tokens per session scan A → B dfc31d64e0f0
  2. 1mo ago First seen · 510 lines · 45 tokens per session scan A cb8fa1dff182

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository duc01226/EasyPlatform (12 stars, last pushed yesterday), licensed MIT. It adds 34 tokens to every session and 8,970 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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