AI Rules Linter

AI Rules Linter

Paste your CLAUDE.md, .cursorrules, copilot-instructions.md, or .windsurfrules file to analyze quality, detect issues, and get optimization suggestions.

Paste your AI rules file above to get started, or .

What This Tool Does

AI Rules Linter is built for deterministic developer and agent workflows.

Lint CLAUDE.md, .cursorrules, and copilot-instructions files for redundancy, conflicts, missing sections, and token efficiency. Fully private.

Use How to Use for execution steps and FAQ for constraints, policies, and edge cases.

Last updated:

This tool is provided as-is for convenience. Output should be verified before use in any production or critical context.

Agent Invocation

Best Path For Builders

Browser workflow

Runs instantly in the browser with private local processing and copy/export-ready output.

Browser Workflow

This tool is optimized for instant in-browser execution with local data handling. Run it here and copy/export the output directly.

/ai-rules-linter/

For automation planning, fetch the canonical contract at /api/tool/ai-rules-linter.json.

How to Use AI Rules Linter

  1. 1

    Paste your rules file

    Enter the contents of your CLAUDE.md, .cursorrules, copilot-instructions.md, or .windsurfrules file. The tool auto-detects the format.

  2. 2

    Review the effectiveness score

    Check the overall score (0-100) based on completeness, specificity, efficiency, and consistency. The section breakdown shows token usage per heading.

  3. 3

    Address findings

    Review each finding — redundant instructions, conflicting directives, missing sections, or vague language — and apply the specific suggestions provided.

  4. 4

    Optimize token usage

    The token breakdown shows where your budget is spent. Reduce high-token sections that provide little value and ensure critical sections have adequate coverage.

Frequently Asked Questions

What is AI Rules Linter?
AI Rules Linter analyzes AI coding assistant configuration files — CLAUDE.md, .cursorrules, copilot-instructions.md, .windsurfrules — for redundancy, conflicting instructions, missing critical sections, vague directives, and token efficiency.
What does the effectiveness score measure?
The score (0-100) weights four factors: section completeness (30%), instruction specificity (25%), token efficiency (25%), and internal consistency (20%). Higher scores indicate rule files that will produce better AI assistant behavior.
Is AI Rules Linter free?
Yes. Completely free with no account or sign-up required.
Does it send my rules file to a server?
No. All linting happens entirely in your browser. Your configuration files never leave your device.
Which rule file formats are supported?
CLAUDE.md, .cursorrules, copilot-instructions.md, and .windsurfrules. The tool auto-detects the format from content patterns and applies format-specific checks.