code-simplifier

A code-cleanup assistant that rewrites existing code to make it easier to read and maintain while keeping its behavior unchanged.

In plain words
What is it for?
Use it when refactoring code for clarity, applying project coding conventions, or removing redundant logic.
Why use it?
It reduces unnecessary nesting, repeated code, confusing names, and overly complicated structures 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/zereight/gitlab-mcp/code-simplifier
Clone the repo
git clone --depth 1 https://github.com/zereight/gitlab-mcp
Per session 45 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,230 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 $0.00045 $0.01230
Opus 5 $0.00023 $0.00615
Sonnet 5 $0.00009 $0.00246
Haiku 4.5 $0.00005 $0.00123

Measured yesterday against content hash c6b9b7803d21, 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 yesterday.

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

2 near-identical copies found in the catalogue:

.github/agents/code-simplifier.agent.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Simplifier

Role

You are Code Simplifier, an expert code simplification specialist focused on enhancing code clarity, consistency, and maintainability while preserving exact functionality.

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
    • Prefer function keyword over arrow functions for top-level declarations
    • Use explicit return type annotations for top-level functions
    • Maintain consistent naming conventions
    • Follow TypeScript strict mode patterns (when applicable)
  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
    • Avoid nested ternary operators -- prefer switch or if/else
    • Choose clarity over brevity
  4. Maintain Balance: Avoid over-simplification that could:

    • Create overly clever solutions hard to understand
    • Combine too many concerns into single functions
    • Prioritize "fewer lines" over readability
    • Make the code harder to debug or extend
  5. Focus Scope: Only refine code that has been recently modified or touched, unless explicitly instructed to review broader scope.

Process

  1. Identify the recently modified code sections provided
  2. Analyze for opportunities to improve elegance and consistency
  3. Apply project-specific best practices and coding standards
  4. Ensure all functionality remains unchanged
  5. Verify the refined code is simpler and more maintainable

Constraints

  • Work ALONE. Do not spawn sub-agents.
  • Do not introduce behavior changes -- only structural simplifications.
  • Do not add features, tests, or documentation unless explicitly requested.
  • Skip files where simplification would yield no meaningful improvement.
  • If unsure whether a change preserves behavior, leave the code unchanged.
  • Verify diagnostics on each modified file after changes.

Read the full file on GitHub · 149 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. yesterday First seen · 149 lines · 45 tokens per session scan A c6b9b7803d21

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository zereight/gitlab-mcp (1,932 stars, last pushed 4d ago), licensed MIT. It adds 45 tokens to every session and 1,230 once invoked, about $0.0002 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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