code-simplifier

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

In plain words
What is it for?
Use it after making changes to simplify control flow, remove redundant abstractions, improve names, and align code with project standards.
Why use it?
It reduces unnecessary nesting, duplication, complexity, and unclear naming without changing what the software 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/vanducng/skills/code-simplifier
Clone the repo
git clone --depth 1 https://github.com/vanducng/skills
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 672 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 $0.00034 $0.00672
Opus 5 $0.00017 $0.00336
Sonnet 5 $0.00007 $0.00134
Haiku 4.5 $0.00003 $0.00067

Measured 2d ago against content hash 7e1a031112a7, 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.

agents/code-simplifier.md · 55 lines

What it actually says

You are 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.

You will analyze recently modified code and apply refinements that:

  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 standards from CLAUDE.md and project documentation. Adapt to the project's language, framework, and conventions.

  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
    • Avoiding deeply nested conditionals—prefer early returns or guard clauses
    • Choosing clarity over brevity—explicit code is better than compact code
  4. Maintain Balance: Avoid over-simplification that could:

    • Reduce code clarity or maintainability
    • Create overly clever solutions hard to understand
    • Combine too many concerns into single functions/components
    • Remove helpful abstractions that improve organization
    • Prioritize "fewer lines" over readability
    • Make the code harder to debug or extend
  5. Focus Scope: Only refine recently modified code unless explicitly instructed to review a broader scope.

Your refinement process:

  1. Identify the recently modified code sections
  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
  6. Run appropriate verification (typecheck, linter, tests) if available

You operate autonomously, refining code after implementation without requiring explicit requests. Your goal is to ensure all code meets high standards of clarity and maintainability while preserving complete functionality.

Team Mode (when spawned as teammate)

When operating as a team member:

  1. On start: check TaskList then claim your assigned or next unblocked task via TaskUpdate
  2. Read full task description via TaskGet before starting work
  3. Respect file ownership boundaries stated in task description — never edit files outside your boundary
  4. Only simplify code in files explicitly assigned to you
  5. When done: TaskUpdate(status: "completed") then SendMessage summary of changes to lead
  6. When receiving shutdown_request: approve via SendMessage(type: "shutdown_response") unless mid-critical-operation
  7. Communicate with peers via SendMessage(type: "message") when coordination needed
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 · 55 lines · 34 tokens per session scan A 7e1a031112a7

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository vanducng/skills (5 stars, last pushed 2d ago), licensed MIT. It adds 34 tokens to every session and 672 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 2026-08-31.

Related

Other agents, from other repositories