code-simplifier

A code-cleanup agent that makes recently changed code clearer and easier to maintain while keeping its behavior unchanged.

In plain words
What is it for?
Simplifying code, applying project conventions, improving naming and readability, and refining recent changes.
Why use it?
It reduces unnecessary complexity, repeated code, and confusing structure without changing what the program does.

Agent

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 agents/robinnorberg/oh-my-copilot/code-simplifier
Clone the repo
git clone --depth 1 https://github.com/RobinNorberg/oh-my-copilot
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 909 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 95% copy Near-identical to another mod 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 $0.00034 $0.00909
Opus 5 $0.00017 $0.00454
Sonnet 5 $0.00007 $0.00182
Haiku 4.5 $0.00003 $0.00091

Measured 2d ago against content hash ad0bbcaeb000, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 2d 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

This is a copy

95% identical to code-simplifier — 1 line differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/code-simplifier.agent.md · 92 lines

How it starts

The opening of the file, as written. The whole thing — 92 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 · 92 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. 2d ago First seen · 92 lines · 34 tokens per session scan A ad0bbcaeb000

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository RobinNorberg/oh-my-copilot (5 stars, last pushed 2mo ago), licensed MIT. It adds 34 tokens to every session and 909 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 95% identical to code-simplifier, differing in 1 line, and is treated as a copy.