Night Market Skill — ported from claude-night-market/abstract. For the full experience with agents, hooks, and commands, install the Claude Code plugin.

Rules Evaluation Framework#

Table of Contents#

1. Overview
2. Quick Start
3. Evaluation Workflow
4. Scoring
5. Resources

Overview#

This skill evaluates Claude Code rules in .claude/rules/ directories against quality standards. It validates YAML frontmatter, glob pattern syntax, content quality, and directory organization. Rules files support path-scoped conditional loading via paths frontmatter and unconditional rules (no paths field).

Key validations: YAML syntax errors, unquoted glob patterns, Cursor-specific fields ( alwaysApply, globs), overly broad patterns, content verbosity, and naming conventions.

Quick Start#

bash

# Evaluate rules in current project
/rules-eval

# Evaluate specific directory
/rules-eval .claude/rules/

# Detailed analysis with recommendations
/rules-eval --detailed

Evaluation Workflow#

1. Scan .claude/rules/ for all .md files (including subdirectories)
2. Validate YAML frontmatter syntax and fields
3. Analyze glob patterns for correctness and specificity
4. Assess content quality (actionable, concise, non-conflicting)
5. Check organization (naming, structure, symlinks)
6. Measure token efficiency and redundancy

Scoring#

CategoryPointsFocusFrontmatter Validity25YAML syntax, required fields, correct field namesGlob Pattern Quality20Syntax, specificity, quotingContent Quality25Actionable, concise, non-conflictingOrganization15Naming, structure, symlink usageToken Efficiency15Rule size, redundancy detectionScoreLevel91-100Excellent - Production-ready76-90Good - Minor improvements possible51-75Basic - Needs optimization26-50Below Standards - Significant issues0-25Critical - Invalid or broken rules

Resources#

Skill-Specific Modules#

• Frontmatter Validation: See modules/frontmatter-validation.md
• Glob Pattern Analysis: See modules/glob-pattern-analysis.md
• Content Quality Metrics: See modules/content-quality-metrics.md
• Organization Patterns: See modules/organization-patterns.md

Tools#

• Rules Validator: scripts/rules_validator.py

Related Skills#

• abstract:skills-eval - Skill evaluation framework
• abstract:hooks-eval - Hook evaluation framework