By pdugan20
Lint and validate every layer of a Claude Code project — CLAUDE.md files, skills, settings, hooks, MCP servers, and plugin manifests — with auto-fix, size optimization, and guided improvements.
Formats Claude Code files with markdownlint, prettier, and shellcheck. Use when user asks to "format my files", "fix markdown formatting", "clean up CLAUDE.md", or "check shell scripts". Auto-fixes markdown, JSON, YAML formatting and analyzes shell script quality.
Interactively helps users optimize their CLAUDE.md files. Use when user asks to "optimize my CLAUDE.md", "my CLAUDE.md is too long", "improve organization", or "split my CLAUDE.md". Runs validation, explains issues conversationally, and helps create @import files to reduce size and improve structure.
Runs comprehensive claudelint validation on all Claude Code project files. Use when user asks to "check everything", "run all validators", "full audit", "validate my entire project", or "what's wrong with my config". Validates CLAUDE.md, skills, settings, hooks, MCP servers, and plugin manifests.
Validates CLAUDE.md files for size, imports, and structure. Use when user asks to "check my CLAUDE.md", "why is my CLAUDE.md too long", "validate imports", or "fix CLAUDE.md errors". Checks file size limits (30KB warning, 50KB error), @import directives, frontmatter in .claude/rules/, and section organization.
Validates Claude Code hooks.json files for schema, events, and commands. Use when user asks to "check my hooks", "validate hooks.json", "hook errors", "why isn't my hook firing", or "hook event types". Validates hook events, types (command, prompt, agent), matcher patterns, and command script references.
Uses power tools
Uses Bash, Write, or Edit tools
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A linter for Claude Code projects. Validates CLAUDE.md files, skills, settings, hooks, MCP servers, plugins, and more.
npm install -g claude-code-lint
claudelint init # Creates .claudelintrc.json and .claudelintignore
claudelint check-all # Validate your project
Or install as a project dependency:
npm install --save-dev claude-code-lint
npx claudelint init
npx claudelint check-all
Use claudelint as a Claude Code plugin for interactive validation via slash commands.
Inside Claude Code, add the marketplace and install the plugin:
/plugin marketplace add pdugan20/pdugan20-plugins
/plugin install claudelint@pdugan20-plugins
Or run claudelint install-plugin for guided setup.
To trial the plugin for a single session without registering the marketplace:
claude --plugin-url https://github.com/pdugan20/claudelint/releases/latest/download/claudelint-plugin.zip
The plugin's skills run the claudelint CLI, so install the npm package first either way.
See the Plugin Guide for team setup, plugin scopes, and troubleshooting.
claudelint check-all # Validate everything
claudelint check-all --fix # Auto-fix issues
claudelint check-all --strict # Zero-tolerance mode
claudelint validate-skills --path . # Validate specific component
claudelint list-rules # Browse all rules
claudelint format --check # Check formatting
After installing as a plugin, use skills via /skill-name or natural language:
| Skill | Description |
|---|---|
validate-all | Validate all project files |
validate-cc-md | Validate CLAUDE.md files |
validate-skills | Validate skill structure and content |
validate-settings | Validate settings.json |
validate-hooks | Validate hooks.json |
validate-mcp | Validate MCP server configuration |
validate-plugin | Validate plugin.json manifest |
format-cc | Format Claude Code files |
optimize-cc-md | Interactively optimize CLAUDE.md |
Full documentation is available at claudelint.com.
Rule documentation is auto-generated from inline metadata in each rule's source code. Run npm run docs:generate to regenerate pages after modifying rules.
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