How do I install the Code Format skill?

Run npx skillmds@latest add winsorllc/code-format in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Code Format safe to use?

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Which AI agents work with Code Format?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Code Format free to use?

Yes. Installing skills from SkillMD is free, and the skill stays under its author's original license.

Who published Code Format?

winsorllc (@winsorllc) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Code Format by winsorllc — Agent Skill

Name: Code Format
Author: winsorllc

File contents

Code Format Skill

Format and validate code in various languages.

When to Use

✅ USE this skill when:

"Format this Python code"
"Validate this JSON"
"Pretty print this JavaScript"
"Format this Markdown"

When NOT to Use

❌ DON'T use this skill when:

Linting code → use linters directly
Compiling code → use compilers
Minifying code → use minifiers

Supported Languages

Language	Formatter	Notes
Python	black, autopep8	Falls back to auto-format
JavaScript	prettier	If installed
TypeScript	prettier	If installed
JSON	python	Built-in
YAML	pyyaml	If installed
Markdown	prettier	If installed
HTML	prettier	If installed
CSS	prettier	If installed
SQL	sqlparse	If installed
Shell	shfmt	If installed

Commands

Format Code

{baseDir}/format-code.sh <file>
{baseDir}/format-code.sh <file> --language python
{baseDir}/format-code.sh --stdin --language js < code.js

Validate Syntax

{baseDir}/validate-code.sh <file>
{baseDir}/validate-code.sh <file> --language python
{baseDir}/validate-code.sh --stdin --language json < data.json

List Languages

{baseDir}/format-code.sh --languages

Options

--language <lang>: Specify language (auto-detect from extension)
--stdin: Read from stdin
--out <file>: Write to file (default: stdout)
--check: Check if formatting needed (don't modify)
--diff: Show diff instead of formatted output
--indent <n>: Indentation size (default: language-specific)

Examples

Format Python file:

{baseDir}/format-code.py script.py

Format JSON from stdin:

cat data.json | {baseDir}/format-code.sh --stdin --language json

Check if formatting needed:

{baseDir}/format-code.sh script.py --check
# Exit 0 if formatted, 1 if needs formatting

Format with custom indent:

{baseDir}/format-code.sh config.json --indent 4

Validate code:

{baseDir}/validate-code.sh script.py
# Output: ✓ Valid Python syntax

Notes

Uses standard formatters when available
Falls back to built-in formatters
Does not modify files by default
Use --out to save to same or different file

---name: code-formatdescription: Format and validate code in various languages. Python, JavaScript, JSON, YAML, Markdown, and more. Uses standard formatters when available.---# Code Format SkillFormat and validate code in various languages.## When to Use✅ **USE this skill when:**- "Format this Python code"- "Validate this JSON"- "Pretty print this JavaScript"- "Format this Markdown"## When NOT to Use❌ **DON'T use this skill when:**- Linting code → use linters directly- Compiling code → use compilers- Minifying code → use minifiers## Supported Languages| Language | Formatter | Notes ||----------|-----------|-------|| Python | black, autopep8 | Falls back to auto-format || JavaScript | prettier | If installed || TypeScript | prettier | If installed || JSON | python | Built-in || YAML | pyyaml | If installed || Markdown | prettier | If installed || HTML | prettier | If installed || CSS | prettier | If installed || SQL | sqlparse | If installed || Shell | shfmt | If installed |## Commands### Format Code```bash{baseDir}/format-code.sh <file>{baseDir}/format-code.sh <file> --language python{baseDir}/format-code.sh --stdin --language js < code.js```### Validate Syntax```bash{baseDir}/validate-code.sh <file>{baseDir}/validate-code.sh <file> --language python{baseDir}/validate-code.sh --stdin --language json < data.json```### List Languages```bash{baseDir}/format-code.sh --languages```## Options- `--language <lang>`: Specify language (auto-detect from extension)- `--stdin`: Read from stdin- `--out <file>`: Write to file (default: stdout)- `--check`: Check if formatting needed (don't modify)- `--diff`: Show diff instead of formatted output- `--indent <n>`: Indentation size (default: language-specific)## Examples**Format Python file:**```bash{baseDir}/format-code.py script.py```**Format JSON from stdin:**```bashcat data.json | {baseDir}/format-code.sh --stdin --language json```**Check if formatting needed:**```bash{baseDir}/format-code.sh script.py --check# Exit 0 if formatted, 1 if needs formatting```**Format with custom indent:**```bash{baseDir}/format-code.sh config.json --indent 4```**Validate code:**```bash{baseDir}/validate-code.sh script.py# Output: ✓ Valid Python syntax```## Notes- Uses standard formatters when available- Falls back to built-in formatters- Does not modify files by default- Use `--out` to save to same or different file

Frequently asked questions

Code Format