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Official agent skill

Code Simplifier

by getsentry in getsentry/skills

Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality.

OfficialApache-2.0Auto-check passedDevelopment

Install Code Simplifier

skills CLI
$ npx skills add getsentry/skills --skill code-simplifier -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install getsentry/skills code-simplifier --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/getsentry/skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/code-simplifier .claude/skills/code-simplifier && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
code-simplifier
GitHub stars
1k
Used in
6 other repos
Token cost
~991 tokens
SKILL.md length
340 words
Files
1
Skills in repo
27
Repo updated
First seen
Licence
Apache-2.0

At a glance

Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality.

  • Works in 5 steps: Preserve Functionality → Apply Project Standards → Enhance Clarity → …
  • Asked to simplify code
  • SKILL.md covers Refinement Principles, Refinement Process and Examples
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Code Simplifier is an agent skill from getsentry/skills, published by the product's own GitHub organization. Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Use when asked to "simplify code", "clean up code", "refactor for clarity", "improve readability", or review recently modified code for elegance. Focuses on project-specific best practices.

Its SKILL.md is about 990 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Code simplification, Refactoring and Plain language and style rules. The repository describes itself as: Agent Skills used by the Sentry team for development. The licence is Apache-2.0.

When your agent uses it

  • Asked to simplify code
  • Refactor for clarity
  • Improve readability
  • Review recently modified code for elegance

Example prompts

  • “simplify code”
  • “clean up code”
  • “refactor for clarity”
  • “/code-simplifier”

Workflow steps

5 steps, taken from the step headings in SKILL.md.

  1. Preserve Functionality
  2. Apply Project Standards
  3. Enhance Clarity
  4. Maintain Balance
  5. Focus Scope

What it can do on your machine

Read from SKILL.md and the folder at commit d18b7aa. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • github.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Code Simplifier loads about 991 tokens when it runs. Until then it costs about 79 tokens; SKILL.md has 340 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~79
When it runs · the whole SKILL.md, loaded when a task matches
~991

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from getsentry/skills at commit d18b7aa, republished under its Apache-2.0 licence (© getsentry). 340 words, ~991 tokens.

Download SKILL.mdSave it as .claude/skills/code-simplifier/SKILL.md (or your agent's skills folder).
name
code-simplifier
description
Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Use when asked to "simplify code", "clean up code", "refactor for clarity", "improve readability", or review recently modified code for elegance. Focuses on project-specific best practices.
<!--
Based on Anthropic's code-simplifier agent:
https://github.com/anthropics/claude-plugins-official/blob/main/plugins/code-simplifier/agents/code-simplifier.md
-->

Code Simplifier

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.

Refinement 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 standards from CLAUDE.md including:

  • Use ES modules with proper import sorting and extensions
  • Prefer function keyword over arrow functions
  • Use explicit return type annotations for top-level functions
  • Follow proper React component patterns with explicit Props types
  • Use proper error handling patterns (avoid try/catch when possible)
  • Maintain consistent naming 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 nested ternary operators - prefer switch statements or if/else chains for multiple conditions
  • Choosing 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.

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. Document only significant changes that affect understanding

Examples

Before: Nested Ternaries
typescript
const status = isLoading ? 'loading' : hasError ? 'error' : isComplete ? 'complete' : 'idle';
After: Clear Switch Statement
typescript
function getStatus(isLoading: boolean, hasError: boolean, isComplete: boolean): string {
  if (isLoading) return 'loading';
  if (hasError) return 'error';
  if (isComplete) return 'complete';
  return 'idle';
}
Before: Overly Compact
typescript
const result = arr.filter(x => x > 0).map(x => x * 2).reduce((a, b) => a + b, 0);
After: Clear Steps
typescript
const positiveNumbers = arr.filter(x => x > 0);
const doubled = positiveNumbers.map(x => x * 2);
const sum = doubled.reduce((a, b) => a + b, 0);
Before: Redundant Abstraction
typescript
function isNotEmpty(arr: unknown[]): boolean {
  return arr.length > 0;
}

if (isNotEmpty(items)) {
  // ...
}
After: Direct Check
typescript
if (items.length > 0) {
  // ...
}

© getsentry, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in skills/code-simplifier of getsentry/skills.

Open the folder on GitHubat commit d18b7aa

Used in 6 other repositories

We found 15 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 6 other GitHub owners. This page covers the copy in getsentry/skills, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Code Simplifier next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Code Simplifier compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Code Simplifier this skillgetsentry/skills1k6 repos~991Automated safety check: PassApache-2.0
Code Simplifiermeleantonio/ChernyCode5161 repos~604Automated safety check: PassNone
Code RefinerMathews-Tom/armory327—~3.1kAutomated safety check: PassMIT
Rnd Code Simplifychendongqi/OPB-Skills125—~2.2kAutomated safety check: PassNone
Code Simplifierpproenca/dot-skills214—~2.1kAutomated safety check: PassMIT
PonytailDavidObando/gsharp5648 repos~1.7kAutomated safety check: PassMIT

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Categories

Questions about Code Simplifier

What does Code Simplifier do?

Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality. Code Simplifier is an agent skill from getsentry/skills, published by the product's own GitHub organization. Simplifies and refines code for clarity, consistency, and maintainability while preserving all functionality.

When should I use Code Simplifier?

Code Simplifier fits situations like: asked to simplify code; refactor for clarity; improve readability; review recently modified code for elegance.

How do I install Code Simplifier in Claude Code?

Run `npx skills add getsentry/skills --skill code-simplifier -a claude-code`. Or copy the skill folder (skills/code-simplifier in getsentry/skills) into .claude/skills/code-simplifier in your project. Claude Code loads it when a task matches its description.

How do I install Code Simplifier in Codex?

Run `npx skills add getsentry/skills --skill code-simplifier -a codex`. Or copy the skill folder (skills/code-simplifier in getsentry/skills) into .agents/skills/code-simplifier in your project. Codex loads it when a task matches its description.

Can I use Code Simplifier in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add getsentry/skills --skill code-simplifier -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-simplifier, .gemini/skills/code-simplifier, .github/skills/code-simplifier and .opencode/skills/code-simplifier in your project.

What does Code Simplifier need to run?

SKILL.md names no scripts, command-line tools or credentials: Code Simplifier is instructions for the agent only.

Does Code Simplifier access the network?

SKILL.md names 1 domain. As links in the text: github.com. This is read from the text; nothing was executed.

Is Code Simplifier safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Code Simplifier use?

Code Simplifier is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Code Simplifier use?

About 991 tokens (SKILL.md is roughly 4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Code Simplifier?

Skills that share tags, products or a category with Code Simplifier: Code Simplifier (meleantonio/ChernyCode, 516 stars), Code Refiner (Mathews-Tom/armory, 327 stars), Rnd Code Simplify (chendongqi/OPB-Skills, 125 stars) and Code Simplifier (pproenca/dot-skills, 214 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Code Simplifier?

getsentry (a GitHub organization, an official publisher) maintains it in getsentry/skills, which has 1,037 GitHub stars. The repository holds 27 skills in this directory. The repository was last updated on October 2, 2026.

Source: getsentry/skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.