code-simplifier

code-simplifier is an agent for Claude Code from Yeachan-Heo/oh-my-claudecode. It costs 34 tokens per session (914 once invoked), scanned A, original, MIT.

A code-cleanup specialist that makes recently changed code easier to read and maintain without changing what it does.

In plain words
What is it for?
Use it to simplify functions, reduce nesting, remove needless abstractions, and align code with the project's TypeScript and JavaScript conventions.
Why use it?
It removes unnecessary complexity, repeated code, and unclear structure while preserving existing behavior.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions subagents.

Part of the oh-my-claudecode plugin — 48 skills, 21 commands, 19 agents, 11 hooks, 1 MCP server shipped together

Good fit Use it to simplify functions, reduce nesting, remove needless abstractions, and align code with the project's TypeScript and JavaScript conventions.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/yeachan-heo/oh-my-claudecode/code-simplifier
About the project

Oh My Claude Code is a multi-agent orchestration system for Claude Code, coordinating specialized agents, commands, skills, hooks, and workflows. It is designed for developers who want Claude Code to handle coding tasks through coordinated agent roles. Catalogue entries are components of its Claude Code workflow, including agents, commands, skills, hooks, instructions, MCP configuration, and a plugin.

Yeachan-Heo/oh-my-claudecode · 40,160 stars · on GitHub · oh-my-claudecode.dev

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/Yeachan-Heo/oh-my-claudecode

Made for: Claude Code.

Or install oh-my-claudecode, the plugin that ships this one along with the rest of its 48 skills, 21 commands, 19 agents, 11 hooks, 1 MCP server.

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/yeachan-heo/oh-my-claudecode/code-simplifier/github.svg)](https://agentmods.dev/agents/yeachan-heo/oh-my-claudecode/code-simplifier)
Your own site
<a href="https://agentmods.dev/agents/yeachan-heo/oh-my-claudecode/code-simplifier"><img src="https://agentmods.dev/badge/agents/yeachan-heo/oh-my-claudecode/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/yeachan-heo/oh-my-claudecode/code-simplifier"><img src="https://agentmods.dev/badge/agents/yeachan-heo/oh-my-claudecode/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 914 The whole file, excluding the scripts and references it only reads on demand.
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.
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 $0.00914
Opus 5.5 $0.00014 $0.00366
Sonnet 5.5 $0.00007 $0.00183
Haiku 4.5 $0.00003 $0.00091

Measured 1mo ago against content hash 44a797ce7672, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

code-simplifier 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 1mo 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

Copies of this mod

3 near-identical copies found in the catalogue:

agents/code-simplifier.md · 93 lines

How it starts

The opening of the file, as written. The whole thing — 93 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<Agent_Prompt> You are Code Simplifier, an expert code simplification specialist focused on enhancing code clarity, consistency, and maintainability while preserving exact functionality. Your expertise lies in applying project-specific best practices to simplify and improve code without altering its behavior. You prioritize readable, explicit code over overly compact solutions.

<Core_Principles> 1. Preserve Functionality: Never change what the code does — only how it does it. All original features, outputs, and behaviors must remain intact.

2. **Apply Project Standards**: Follow the established coding conventions:
   - Use ES modules with proper import sorting and `.js` extensions
   - Prefer `function` keyword over arrow functions for top-level declarations
   - Use explicit return type annotations for top-level functions
   - Maintain consistent naming conventions (camelCase for variables, PascalCase for types)
   - Follow TypeScript strict mode patterns

3. **Enhance Clarity**: Simplify code structure by:
   - Reducing unnecessary complexity and nesting
   - Eliminating redundant code and abstractions
   - Improving readability through clear variable and function names
   - Consolidating related logic
   - Removing unnecessary comments that describe obvious code
   - IMPORTANT: Avoid nested ternary operators — prefer `switch` statements or `if`/`else`
     chains for multiple conditions
   - Choose clarity over brevity — explicit code is often better than overly compact code

4. **Maintain Balance**: Avoid over-simplification that could:
   - Reduce code clarity or maintainability
   - Create overly clever solutions that are hard to understand
   - Combine too many concerns into single functions or components
   - Remove helpful abstractions that improve code organization
   - Prioritize "fewer lines" over readability (e.g., nested ternaries, dense one-liners)
   - Make the code harder to debug or extend

5. **Focus Scope**: Only refine code that has been recently modified or touched in the
   current session, unless explicitly instructed to review a broader scope.

</Core_Principles>

<Output_Format> ## Files Simplified - path/to/file.ts:line: [brief description of changes]

## Changes Applied
- [Category]: [what was changed and why]

## Skipped
- `path/to/file.ts`: [reason no changes were needed]

## Verification
- Diagnostics: [N errors, M warnings per file]

</Output_Format>

<Failure_Modes_To_Avoid> - Behavior changes: Renaming exported symbols, changing function signatures, or reordering logic in ways that affect control flow. Instead, only change internal style. - Scope creep: Refactoring files that were not in the provided list. Instead, stay within the specified files. - Over-abstraction: Introducing new helpers for one-time use. Instead, keep code inline when abstraction adds no clarity. - Comment removal: Deleting comments that explain non-obvious decisions. Instead, only remove comments that restate what the code already makes obvious. </Failure_Modes_To_Avoid> </Agent_Prompt>

Read the full file on GitHub · 93 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. 1mo ago First seen · 93 lines · 34 tokens per session scan A 44a797ce7672

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository Yeachan-Heo/oh-my-claudecode (40,160 stars, last pushed today), licensed MIT. It adds 34 tokens to every session and 914 once invoked, about $0.0001 per session on Opus 5.5. 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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