Validate All

Validate Claude Code Project

Runs claudelint check-all to validate all Claude Code project files including CLAUDE.md, skills, settings, hooks, MCP servers, and plugin manifests.

Usage

claudelint check-all $ARGUMENTS

Options

Available flags:

• --verbose - Show detailed validation output
• --warnings-as-errors - Treat warnings as errors
• --explain - Show detailed explanations and fix suggestions
• --format - Output format: stylish, json, compact (default: stylish)
• --config - Path to custom config file
• --fast - Fast mode: skip expensive checks
• --color / --no-color - Control color output

Examples

Example 1: Plugin won't load after changes

User says: "I just updated my CLAUDE.md and added a new skill, but now my plugin isn't loading" What happens:

1. Skill runs claudelint check-all
2. Finds CLAUDE.md exceeds 50KB (blocking issue)
3. Finds new skill has wrong capitalization in allowed-tools
4. Shows both issues need fixing before plugin will load

Result: User identifies why plugin broke and fixes both issues

Example 2: Pre-commit validation failed

User says: "My git pre-commit hook is failing but I don't know which validator is the problem" What happens:

1. Skill runs claudelint check-all --verbose
2. Shows validate-mcp failed: invalid transport type "sse" (deprecated)
3. Shows validate-hooks passed, validate-skills passed, etc.
4. Points to specific .mcp.json file and line number

Result: User fixes the one failing validator (MCP config) and commit succeeds

Example 3: After npm install, verify everything still works

User says: "I just upgraded claude-code-lint, make sure I didn't break anything" What happens:

1. Skill runs claudelint check-all
2. Detects new rules flagging previously-allowed patterns
3. Shows deprecation warnings for old syntax
4. Suggests migration path for deprecated features

Result: User knows what needs updating after version upgrade

Command Examples

Basic validation:

claudelint check-all

Verbose output with explanations:

claudelint check-all --verbose --explain

JSON output for CI/CD:

claudelint check-all --format json

Use custom config:

claudelint check-all --config .claudelintrc.custom.json

Treat warnings as errors (strict mode):

claudelint check-all --warnings-as-errors

What Gets Validated

The validate skill checks:

1. CLAUDE.md files - File size, imports, frontmatter, sections
2. Skills - SKILL.md schema, naming, documentation, security
3. Settings - settings.json schema, permissions, environment variables
4. Hooks - hooks.json schema, events, commands
5. MCP Servers - .mcp.json schema, transport config, variables
6. Plugins - plugin.json schema, semantic versioning, references

Exit Codes

• 0 - No errors or warnings
• 1 - Warnings found (or warnings treated as errors)
• 2 - Errors found or fatal error (invalid config, crash)

For troubleshooting, see [common issues](./references/common-issues.md). For customization, see [configuration](./references/configuration.md).

See Also

• [validate-cc-md](../validate-cc-md/SKILL.md) - Validate only CLAUDE.md files
• [validate-skills](../validate-skills/SKILL.md) - Validate only skills
• [validate-settings](../validate-settings/SKILL.md) - Validate only settings
• [format-cc](../format-cc/SKILL.md) - Format Claude files with prettier/markdownlint

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: pdugan20
• Source: pdugan20/claudelint
• License: MIT
• Homepage: https://www.claudelint.com

Install and usage instructions live in the source repository linked above.