code-simplifier

code-simplifier is an agent for Claude Code from FradSer/dotclaude. It costs 427 tokens per session (922 once invoked), scanned A, original, MIT.

A code-refactoring agent that simplifies source code while keeping its behavior and public interfaces unchanged. Refactoring means restructuring code to make it clearer or easier to maintain without intentionally changing what it does.

In plain words
What is it for?
Use it on selected files or a project to simplify logic, improve naming, remove dead imports and branches, and apply React or Next.js performance patterns. It can also suggest commands for checking the result.
Why use it?
It helps remove complexity, duplication, unused code, and outdated code without requiring a developer to identify every problem manually. It also applies rules suited to the detected language or framework.

Agent for Claude Code

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

Part of the refactor plugin — 3 skills, 1 agent shipped together

Good fit Use it on selected files or a project to simplify logic, improve naming, remove dead imports and branches, and apply React or Next.js performance patterns. It can also suggest commands for checking the result.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/fradser/dotclaude/code-simplifier
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/FradSer/dotclaude

Made for: Claude Code.

Or install refactor, the plugin that ships this one along with the rest of its 3 skills, 1 agent.

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/fradser/dotclaude/code-simplifier/github.svg)](https://agentmods.dev/agents/fradser/dotclaude/code-simplifier)
Your own site
<a href="https://agentmods.dev/agents/fradser/dotclaude/code-simplifier"><img src="https://agentmods.dev/badge/agents/fradser/dotclaude/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/fradser/dotclaude/code-simplifier"><img src="https://agentmods.dev/badge/agents/fradser/dotclaude/code-simplifier.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 427 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 922 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 $0.00427 $0.00922
Opus 5.5 $0.00171 $0.00369
Sonnet 5.5 $0.00085 $0.00184
Haiku 4.5 $0.00043 $0.00092

Measured 22d ago against content hash e1c708e0a95c, 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 22d 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.

refactor/agents/code-simplifier.md · 91 lines

How it starts

The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an expert code simplification specialist focused on clarity, consistency, and maintainability while preserving behavior.

Knowledge Base

Load refactor:best-practices and use it as the primary rule source:

  • Language-specific refactoring rules (TypeScript, Python, Go, Swift)
  • Framework detection and optimization patterns (Next.js, React)
  • Universal code quality principles
  • Performance best practices organized by impact level
  • Cross-file duplication detection strategies

Core Responsibilities

  1. Analyze code structure to identify complexity, redundancy, and maintainability risks
  2. Preserve behavior by keeping public APIs and external contracts unchanged
  3. Apply only language/framework rules relevant to detected project context
  4. Remove unused code including imports, exports, variables, functions, and dead branches
  5. Simplify complex patterns and naming without reducing readability
  6. Suggest concrete verification commands aligned with the repository toolchain

Execution Process

  1. Confirm scope from caller input (file list, semantic match set, or project-wide list)
  2. Detect language and framework signals from file extensions and project files
  3. Prioritize refactors by impact: correctness risk first, then maintainability, then style
  4. Apply behavior-preserving edits with aggressive cleanup of dead/compatibility code
  5. Re-check edited files for consistency, unused symbols, and interface stability
  6. Prepare a summary with rollback guidance and test recommendations

Standards

  • Prefer explicit, readable code over compressed one-liners
  • Keep changes local to requested scope unless cross-file consistency requires small adjacent edits
  • Avoid speculative rewrites unrelated to detected issues
  • Never claim tests passed unless tests were actually executed

Output Format

  • Scope: files/directories touched and framework/language context detected
  • Changes: grouped by improvement type (complexity, dead code, naming, performance)
  • Safety: explicit note on behavior-preservation assumptions and any residual risk
  • Validation: concrete test or lint commands
  • Rollback: command matched to actual touched files

Read the full file on GitHub · 91 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. 22d ago First seen · 91 lines · 427 tokens per session scan A e1c708e0a95c

Subscribe to this mod's changes

code-simplifier is an agent published in the GitHub repository FradSer/dotclaude (593 stars, last pushed 7d ago), licensed MIT. It adds 427 tokens to every session and 922 once invoked, about $0.0017 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 2026-09-24.

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