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.
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.
git clone --depth 1 https://github.com/Yeachan-Heo/oh-my-claudecodeWrote 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.
[](https://agentmods.dev/agents/yeachan-heo/oh-my-claudecode/code-simplifier)<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.
<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>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.
| Model | Per session | Once 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 |
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.
Copies of this mod
3 near-identical copies found in the catalogue:
- code-simplifier — 100% identical, 0 lines differ
- code-simplifier — 95% identical, 2 lines differ
- code-simplifier — 95% identical, 0 lines differ
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>
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.
- 1mo ago First seen · 93 lines · 34 tokens per session scan A 44a797ce7672
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.
Other agents, from other repositories
architect
Technical designer. Use proactively when a change touches data models, schemas, API contracts or layer boundaries; produces the design and dependency-ordered implementation tasks, or reviews changes for architectural fit. Does not write implementation code.
oracle
Critical analyst. Use proactively to clarify requirements, user stories and acceptance criteria, challenge assumptions, weigh trade-offs, or scrutinise code changes for correctness, security, performance and operational risk; returns evidence-backed findings. Does not design systems or write code.
sentinel
Read-only codebase scout. Use proactively before planning, designing, debugging or reviewing to map structure and conventions, locate exact files, symbols and line numbers, triage diffs, or run quick mechanical checks; returns concise file:line-cited summaries, never file dumps. Does not edit.
keymaker
Fast scaffolder. Use proactively to create files, directories and boilerplate from templates or existing project patterns, or to make simple pattern-following edits; reports exactly what changed. Does not design, review or implement business logic.
project-auditor
Use for /audit or when no PROJECT.md exists. Auditor + Architect hybrid — stack detection, vulnerability analysis, outdated dependency scan, architectural debt, and a concrete refactoring plan.
architect
Architecture sparring partner for Trellis. Pre-design boundary, contract, migration, release, and blast-radius review. Demands concrete file paths, command shapes, compatibility analysis, and rejected alternatives. NOT an implementer.