docs(plugin-eval): add CLAUDE.md, full evaluation framework docs, and README updates

- Create CLAUDE.md with project conventions and PluginEval quick reference
- Add docs/plugin-eval.md with complete framework documentation (layers,
  dimensions, scoring, anti-patterns, statistical methods, project structure)
- Add PluginEval section to main README under What's New
- Expand plugin-eval/README.md with quick start and command table
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Seth Hobson
2026-03-26 17:40:56 -04:00
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# Project: claude-agents
Claude Code plugin marketplace — 72 focused plugins, 112 agents, 146 skills, 79 tools.
## Repository Structure
```
claude-agents/
├── .claude-plugin/marketplace.json # Registry of all plugins
├── plugins/ # All 72 plugins
│ ├── <plugin-name>/
│ │ ├── .claude-plugin/plugin.json
│ │ ├── agents/*.md
│ │ ├── commands/*.md
│ │ └── skills/<skill-name>/SKILL.md
│ └── ...
├── docs/ # Documentation
│ ├── plugins.md # Plugin catalog
│ ├── agents.md # Agent reference
│ ├── agent-skills.md # Skills reference
│ ├── usage.md # Usage guide
│ ├── architecture.md # Design principles
│ └── plugin-eval.md # Evaluation framework
└── tools/ # Development utilities
```
## Plugin Authoring Conventions
### Agent frontmatter
```yaml
---
name: agent-name
description: "What this agent does. Use PROACTIVELY when [trigger conditions]."
model: opus|sonnet|haiku|inherit
color: blue|green|red|yellow|cyan|magenta # optional
tools: Read, Grep, Glob # optional — restricts available tools
---
```
### Skill structure
```
skills/<skill-name>/
├── SKILL.md # Required — frontmatter + content
├── references/ # Optional — supporting material
│ └── *.md
└── assets/ # Optional — templates, configs
```
Skill frontmatter:
```yaml
---
name: skill-name
description: "Use this skill when [specific trigger conditions]."
---
```
### Command frontmatter
```yaml
---
description: What this command does
argument-hint: <path> [--flag]
---
```
### plugin.json
Only `name` is required. Agents, commands, and skills are auto-discovered from directory structure.
```json
{ "name": "plugin-name" }
```
### marketplace.json
Lists all plugin component paths for the registry. Agents as `./agents/name.md`, skills as `./skills/skill-name` (directory, not SKILL.md).
## Model Tiers
| Tier | Model | Use Case |
| ------ | ------- | ------------------------------------------------------ |
| Tier 1 | Opus | Architecture, security, code review, production coding |
| Tier 2 | Inherit | Complex tasks — user chooses model |
| Tier 3 | Sonnet | Docs, testing, debugging, support |
| Tier 4 | Haiku | Fast ops, SEO, deployment, simple tasks |
## PluginEval — Quality Evaluation Framework
Three-layer evaluation system in `plugins/plugin-eval/`. Full docs: [docs/plugin-eval.md](docs/plugin-eval.md).
### Quick Reference
```bash
cd plugins/plugin-eval
# Run tests
uv run pytest
# Evaluate a skill (static only)
uv run plugin-eval score path/to/skill --depth quick --output json
# Evaluate with LLM judge
uv run plugin-eval score path/to/skill --depth standard
# Full certification (all 3 layers)
uv run plugin-eval certify path/to/skill
# Compare two skills
uv run plugin-eval compare path/to/skill-a path/to/skill-b
# Build corpus for Elo ranking
uv run plugin-eval init plugins/
```
### Evaluation Layers
1. **Static** (Layer 1) — Deterministic structural analysis. < 2 seconds, free, always runs.
2. **LLM Judge** (Layer 2) — Semantic evaluation via Claude (Haiku + Sonnet). ~30s, 4 LLM calls.
3. **Monte Carlo** (Layer 3) — Statistical reliability via N simulated runs. ~25 min, 50100 calls.
### 10 Dimensions (weights)
triggering_accuracy (25%), orchestration_fitness (20%), output_quality (15%), scope_calibration (12%), progressive_disclosure (10%), token_efficiency (6%), robustness (5%), structural_completeness (3%), code_template_quality (2%), ecosystem_coherence (2%)
### Badges
Platinum ≥90, Gold ≥80, Silver ≥70, Bronze ≥60
### Anti-Patterns
OVER_CONSTRAINED (>15 MUST/ALWAYS/NEVER), EMPTY_DESCRIPTION (<20 chars), MISSING_TRIGGER (no "Use when…"), BLOATED_SKILL (>800 lines no refs), ORPHAN_REFERENCE (dead link), DEAD_CROSS_REF (missing skill)
### Tech Stack
- Python ≥ 3.12, uv, ruff, ty, pytest
- Dependencies: pydantic, typer, rich, pyyaml
- Optional: claude-agent-sdk (LLM layers), anthropic (API alternative)
## Development
### Python Tooling
Use the Astral Rust toolchain: `uv` (package manager), `ruff` (linter/formatter), `ty` (type checker). Do not use pip, mypy, or black.
### Adding a Plugin
1. Create `plugins/<name>/` with `.claude-plugin/plugin.json`
2. Add agents in `agents/`, commands in `commands/`, skills in `skills/`
3. Update `.claude-plugin/marketplace.json`
4. Follow naming conventions: lowercase, hyphen-separated
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- **[Agent Skills](docs/agent-skills.md)** - 146 specialized skills with progressive disclosure
- **[Usage Guide](docs/usage.md)** - Commands, workflows, and best practices
- **[Architecture](docs/architecture.md)** - Design principles and patterns
- **[PluginEval](docs/plugin-eval.md)** - Quality evaluation framework (layers, dimensions, scoring)
### Quick Links
@@ -130,7 +131,36 @@ rm -rf ~/.claude/plugins/cache/claude-code-workflows && rm ~/.claude/plugins/ins
## What's New
### Agent Teams Plugin (NEW)
### PluginEval — Quality Evaluation Framework (NEW)
A three-layer evaluation framework for measuring and certifying plugin/skill quality:
```bash
/plugin install plugin-eval@claude-code-workflows
```
- **Three Evaluation Layers** — Static analysis (instant), LLM judge (semantic), Monte Carlo simulation (statistical)
- **10 Quality Dimensions** — Triggering accuracy, orchestration fitness, output quality, scope calibration, progressive disclosure, token efficiency, robustness, structural completeness, code template quality, ecosystem coherence
- **Quality Badges** — Platinum (★★★★★), Gold (★★★★), Silver (★★★), Bronze (★★)
- **Anti-Pattern Detection** — OVER_CONSTRAINED, EMPTY_DESCRIPTION, MISSING_TRIGGER, BLOATED_SKILL, ORPHAN_REFERENCE, DEAD_CROSS_REF
- **Statistical Rigor** — Wilson score CI, bootstrap CI, Clopper-Pearson exact CI, Elo ranking
- **CLI + Claude Code** — `uv run plugin-eval score/certify/compare` or `/eval`, `/certify`, `/compare` commands
- **CI Gate** — `--threshold` flag exits non-zero below a minimum score
```bash
# Quick evaluation (static only, instant)
uv run plugin-eval score path/to/skill --depth quick
# Standard evaluation (static + LLM judge)
uv run plugin-eval score path/to/skill --depth standard
# Full certification (all layers + Elo)
uv run plugin-eval certify path/to/skill
```
[→ View PluginEval documentation](docs/plugin-eval.md)
### Agent Teams Plugin
Orchestrate multi-agent teams for parallel workflows using Claude Code's experimental Agent Teams feature:
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# PluginEval: Quality Evaluation Framework
PluginEval is a three-layer quality evaluation framework for Claude Code plugins and skills. It combines deterministic static analysis, LLM-based semantic judging, and Monte Carlo simulation to produce calibrated quality scores with confidence intervals.
## Overview
PluginEval answers the question: **"How good is this plugin or skill?"** It evaluates across 10 quality dimensions, detects anti-patterns, assigns letter grades, and awards quality badges (Bronze through Platinum).
### Architecture
```
┌─────────────────────────────────────────────────┐
│ CLI / Commands │
│ score · certify · compare · init │
├─────────────────────────────────────────────────┤
│ Eval Engine │
│ Composite scoring, layer blending │
├────────────┬────────────────┬───────────────────┤
│ Layer 1 │ Layer 2 │ Layer 3 │
│ Static │ LLM Judge │ Monte Carlo │
│ Analysis │ (Semantic) │ (Statistical) │
│ <2s, free │ ~30s, 4 calls │ ~2min, 50 calls │
├────────────┴────────────────┴───────────────────┤
│ Parser Layer │
│ SKILL.md, agents/*.md, plugin.json │
├─────────────────────────────────────────────────┤
│ Statistical Methods │
│ Wilson CI · Bootstrap CI · Clopper-Pearson │
│ Cohen's κ · Coefficient of Variation │
├─────────────────────────────────────────────────┤
│ Corpus & Elo Ranking │
│ Gold standard index · Pairwise comparison │
└─────────────────────────────────────────────────┘
```
## Installation & Setup
PluginEval lives in `plugins/plugin-eval/` and uses [uv](https://docs.astral.sh/uv/) for dependency management.
```bash
cd plugins/plugin-eval
# Install core dependencies (static analysis only)
uv sync
# Install with LLM support (Layers 2 & 3)
uv sync --extra llm
# Install with direct API support
uv sync --extra api
# Install dev dependencies (tests, linting)
uv sync --extra dev
```
### Requirements
- Python ≥ 3.12
- Core: `pydantic`, `typer`, `rich`, `pyyaml`
- LLM layers: `claude-agent-sdk` (uses Claude Code Max plan by default)
- API alternative: `anthropic` SDK (requires `ANTHROPIC_API_KEY`)
## CLI Commands
### `score` — Evaluate a plugin or skill
```bash
# Quick evaluation (static only, instant)
uv run plugin-eval score path/to/skill --depth quick
# Standard evaluation (static + LLM judge)
uv run plugin-eval score path/to/skill --depth standard
# Deep evaluation (all three layers)
uv run plugin-eval score path/to/skill --depth deep
# Output formats
uv run plugin-eval score path/to/skill --output json
uv run plugin-eval score path/to/skill --output markdown
uv run plugin-eval score path/to/skill --output html
# CI gate: exit code 1 if below threshold
uv run plugin-eval score path/to/skill --threshold 70
```
**Options:**
| Option | Default | Description |
|--------|---------|-------------|
| `--depth` | `standard` | `quick`, `standard`, `deep`, `thorough` |
| `--output` | `markdown` | `json`, `markdown`, `html` |
| `--verbose` | `false` | Show detailed output |
| `--concurrency` | `4` | Max concurrent LLM calls (120) |
| `--auth` | `max` | Auth mode: `max` (Claude Code Max plan) or `api-key` |
| `--threshold` | none | Minimum score; exit 1 if below |
### `certify` — Full certification with badge
Runs at `deep` depth (all three layers). Takes 1520 minutes.
```bash
uv run plugin-eval certify path/to/skill --output markdown
```
### `compare` — Head-to-head comparison
Compare two skills side-by-side across all dimensions.
```bash
uv run plugin-eval compare path/to/skill-a path/to/skill-b
```
### `init` — Initialize corpus
Build a gold-standard corpus index from a plugins directory for Elo ranking.
```bash
uv run plugin-eval init plugins/ --corpus-dir ~/.plugineval/corpus
```
## Claude Code Integration
PluginEval is also a Claude Code plugin with agents and commands.
### Slash Commands
| Command | Description |
| ------------------ | -------------------------------------------------------- |
| `/eval <path>` | Evaluate a plugin or skill (orchestrates static + judge) |
| `/certify <path>` | Full certification pipeline with badge |
| `/compare <a> <b>` | Head-to-head skill comparison |
### Agents
| Agent | Model | Role |
| ------------------- | ------ | ---------------------------------------------------------------------- |
| `eval-orchestrator` | Opus | Coordinates evaluation: runs CLI, dispatches judge, computes composite |
| `eval-judge` | Sonnet | LLM judge: scores 4 semantic dimensions with anchored rubrics |
### Skill
The `evaluation-methodology` skill provides the full scoring methodology reference, including dimension definitions, rubric anchors, blend weights, and improvement guidance.
## The Three Evaluation Layers
### Layer 1: Static Analysis
**Speed:** < 2 seconds. **Cost:** Free (no LLM calls). **Deterministic.**
Runs six structural sub-checks against the parsed SKILL.md:
| Sub-check | Weight | What it measures |
| ------------------------- | ------ | --------------------------------------------------------------------------------- |
| `frontmatter_quality` | 35% | Name, description length, trigger-phrase quality ("Use when…", "Use PROACTIVELY") |
| `orchestration_wiring` | 25% | Output/input documentation, code examples, orchestrator anti-pattern |
| `progressive_disclosure` | 15% | Line count vs. sweet spot (200600 lines), references/ and assets/ directories |
| `structural_completeness` | 10% | Heading density, code blocks, examples section, troubleshooting section |
| `token_efficiency` | 10% | MUST/NEVER/ALWAYS density, duplicate-line detection |
| `ecosystem_coherence` | 5% | Cross-references to other skills/agents, "related"/"see also" mentions |
Also detects anti-patterns (see below) and applies a multiplicative penalty.
### Layer 2: LLM Judge
**Speed:** ~30 seconds. **Cost:** 4 LLM calls (Haiku + Sonnet). **Requires `claude-agent-sdk`.**
Uses Claude as a semantic evaluator across 4 dimensions with anchored rubrics:
| Dimension | Model | Method |
| ----------------------- | ------ | ---------------------------------------------------------------------------- |
| `triggering_accuracy` | Haiku | Generates 10 synthetic prompts (5 should-trigger, 5 should-not), computes F1 |
| `orchestration_fitness` | Sonnet | Rates worker-vs-orchestrator role using 5-point anchored rubric |
| `output_quality` | Sonnet | Simulates 3 realistic tasks, evaluates expected output quality |
| `scope_calibration` | Sonnet | Rates scope appropriateness using 5-point anchored rubric |
All 4 assessments run concurrently with semaphore-based throttling.
### Layer 3: Monte Carlo Simulation
**Speed:** ~2 minutes (50 runs) to ~5 minutes (100 runs). **Cost:** 50100 LLM calls. **Requires `claude-agent-sdk`.**
Generates 15 varied prompts via Haiku, then runs N simulations to compute statistical reliability:
| Metric | Measure | Statistical Method |
| ------------------ | --------------------------------------- | --------------------------------- |
| Activation rate | % of runs where skill activated | Wilson score CI |
| Output consistency | Mean quality + coefficient of variation | Bootstrap CI (1000 resamples) |
| Failure rate | % of runs that errored | Clopper-Pearson exact CI |
| Token efficiency | Median tokens, IQR, outlier detection | Normalized against 8000-token cap |
## Evaluation Depths
| Depth | Layers | Confidence Label | Time | Cost |
| ---------- | --------------------------------------- | ---------------- | ------ | -------------- |
| `quick` | Static only | Estimated | < 2s | Free |
| `standard` | Static + Judge | Assessed | ~30s | 4 LLM calls |
| `deep` | Static + Judge + Monte Carlo (50 runs) | Certified | ~3 min | ~54 LLM calls |
| `thorough` | Static + Judge + Monte Carlo (100 runs) | Certified+ | ~6 min | ~104 LLM calls |
## The 10 Quality Dimensions
Each dimension has a weight and receives scores from different layers, blended using per-dimension weights:
| Dimension | Weight | Static | Judge | Monte Carlo | What it measures |
| ------------------------- | ------ | ------ | ----- | ----------- | ------------------------------------------------ |
| `triggering_accuracy` | 25% | 0.15 | 0.25 | 0.60 | Does the description fire for the right prompts? |
| `orchestration_fitness` | 20% | 0.10 | 0.70 | 0.20 | Is it a composable worker, not an orchestrator? |
| `output_quality` | 15% | 0.00 | 0.40 | 0.60 | Would it produce correct, useful output? |
| `scope_calibration` | 12% | 0.30 | 0.55 | 0.15 | Is the scope well-sized for its domain? |
| `progressive_disclosure` | 10% | 0.80 | 0.20 | 0.00 | Does it use references/ for large content? |
| `token_efficiency` | 6% | 0.40 | 0.10 | 0.50 | Is it concise without repetition? |
| `robustness` | 5% | 0.00 | 0.20 | 0.80 | Does it handle varied inputs reliably? |
| `structural_completeness` | 3% | 0.90 | 0.10 | 0.00 | Does it have headings, code, examples? |
| `code_template_quality` | 2% | 0.30 | 0.70 | 0.00 | Are code examples production-ready? |
| `ecosystem_coherence` | 2% | 0.85 | 0.15 | 0.00 | Does it link to related skills/agents? |
### Composite Score Formula
```
Final = Σ(dimension_weight × blended_score) × 100 × anti_pattern_penalty
```
Where `blended_score` for each dimension is a weighted combination of available layer scores, renormalized to the layers actually present.
## Quality Badges
| Badge | Score | Elo | Stars | Meaning |
| -------- | ----- | ------ | ----- | ------------------------ |
| Platinum | ≥ 90 | ≥ 1600 | ★★★★★ | Reference quality |
| Gold | ≥ 80 | ≥ 1500 | ★★★★ | Production ready |
| Silver | ≥ 70 | ≥ 1400 | ★★★ | Functional, needs polish |
| Bronze | ≥ 60 | ≥ 1300 | ★★ | Minimum viable |
Badges require both score AND Elo thresholds when Elo data is available.
## Letter Grades
Scores are also converted to letter grades:
| Grade | Score Range |
| ----- | ----------- |
| A+ | ≥ 97 |
| A | ≥ 93 |
| A- | ≥ 90 |
| B+ | ≥ 87 |
| B | ≥ 83 |
| B- | ≥ 80 |
| C+ | ≥ 77 |
| C | ≥ 73 |
| C- | ≥ 70 |
| D+ | ≥ 67 |
| D | ≥ 63 |
| D- | ≥ 60 |
| F | < 60 |
## Anti-Pattern Detection
The static analyzer detects these anti-patterns, each with a severity that contributes to a multiplicative penalty:
| Flag | Severity | Trigger |
| ------------------- | -------- | --------------------------------------------- |
| `OVER_CONSTRAINED` | 10% | > 15 MUST/ALWAYS/NEVER directives |
| `EMPTY_DESCRIPTION` | 10% | Description < 20 characters |
| `MISSING_TRIGGER` | 15% | No "Use when…" trigger phrase in description |
| `BLOATED_SKILL` | 10% | > 800 lines without a references/ directory |
| `ORPHAN_REFERENCE` | 5% | Dead link to a file in references/ |
| `DEAD_CROSS_REF` | 5% | Cross-reference to a non-existent skill/agent |
**Penalty formula:** `penalty = max(0.5, 1.0 0.05 × count)` — each anti-pattern reduces the score by 5%, flooring at 50%.
## Elo Ranking System
For relative quality comparison against a corpus of known skills:
- **Initial rating:** 1500
- **K-factor:** 32
- **Confidence intervals:** Bootstrap resampling (500 resamples)
- **Corpus management:** `init` command indexes all skills from a plugins directory
- **Reference selection:** Matches by category and similar line count
The Elo system uses the standard formula: `E(A) = 1 / (1 + 10^((Rb - Ra) / 400))`.
## Corpus Management
The corpus is a JSON index of all skills used for Elo comparisons:
```bash
# Build corpus from your plugins directory
uv run plugin-eval init plugins/ --corpus-dir ~/.plugineval/corpus
# The corpus stores:
# - Skill name, path, category, line count
# - Current Elo rating (updated after each comparison)
```
Reference skills are selected by matching category and approximate line count.
## Statistical Methods
PluginEval uses rigorous statistical methods throughout:
| Method | Used For | Details |
| ------------------------ | -------------------------- | ----------------------------------------- |
| Wilson score CI | Activation rate confidence | Handles small-sample binomial proportions |
| Bootstrap CI | Output quality confidence | 1000 resamples, percentile method |
| Clopper-Pearson | Failure rate confidence | Exact CI for small failure counts |
| Coefficient of variation | Output consistency | std/mean ratio; lower = more consistent |
| Cohen's kappa | Inter-rater agreement | For multi-judge scenarios |
All statistical functions are pure Python with no external dependencies (no scipy/numpy required).
## Parser
The parser extracts structured data from Claude Code plugin files:
- **Skills:** Parses SKILL.md frontmatter (name, description), counts headings, code blocks, languages, MUST/NEVER/ALWAYS directives, cross-references, and detects references/ and assets/ directories
- **Agents:** Parses agent .md frontmatter (name, description, model, tools), detects proactive triggers and skill references
- **Plugins:** Aggregates all skills and agents from a plugin directory
## Project Structure
```
plugins/plugin-eval/
├── .claude-plugin/
│ └── plugin.json # Claude Code plugin manifest
├── agents/
│ ├── eval-orchestrator.md # Orchestrates evaluation (Opus)
│ └── eval-judge.md # LLM judge agent (Sonnet)
├── commands/
│ ├── eval.md # /eval slash command
│ ├── certify.md # /certify slash command
│ └── compare.md # /compare slash command
├── skills/
│ └── evaluation-methodology/
│ ├── SKILL.md # Full methodology reference
│ └── references/
│ └── rubrics.md # Detailed rubric anchors
├── src/plugin_eval/
│ ├── __init__.py
│ ├── cli.py # Typer CLI (score, certify, compare, init)
│ ├── engine.py # Eval engine (layer coordination, composite scoring)
│ ├── models.py # Pydantic models (Depth, Badge, EvalConfig, results)
│ ├── parser.py # Plugin/skill/agent parser
│ ├── reporter.py # JSON/Markdown/HTML output
│ ├── corpus.py # Gold standard corpus for Elo ranking
│ ├── elo.py # Elo rating calculator with bootstrap CI
│ ├── stats.py # Statistical methods (Wilson, bootstrap, Clopper-Pearson)
│ └── layers/
│ ├── __init__.py
│ ├── static.py # Layer 1: deterministic structural analysis
│ ├── judge.py # Layer 2: LLM semantic evaluation
│ └── monte_carlo.py # Layer 3: statistical reliability simulation
├── tests/ # Comprehensive test suite
│ ├── conftest.py
│ ├── test_cli.py
│ ├── test_engine.py
│ ├── test_static.py
│ ├── test_judge.py
│ ├── test_monte_carlo.py
│ ├── test_models.py
│ ├── test_parser.py
│ ├── test_reporter.py
│ ├── test_corpus.py
│ ├── test_elo.py
│ ├── test_stats.py
│ └── test_e2e.py # End-to-end tests against real plugins
├── pyproject.toml # uv/hatch project config
└── uv.lock
```
## Running Tests
```bash
cd plugins/plugin-eval
# Run all tests
uv run pytest
# Run with coverage
uv run pytest --cov=plugin_eval
# Run specific test file
uv run pytest tests/test_static.py
# Run e2e tests (requires real plugin corpus)
uv run pytest tests/test_e2e.py
```
## Example Output
### Markdown Report
```
# PluginEval Report
**Path:** `plugins/python-development/skills/async-python-patterns`
**Timestamp:** 2025-03-26T12:00:00+00:00
**Depth:** standard
## Overall Score
| Metric | Value |
|--------|-------|
| Score | **78.3/100** |
| Confidence | Assessed |
| Badge | Silver |
## Layer Breakdown
| Layer | Score | Anti-Patterns |
|-------|-------|---------------|
| static | 0.742 | 0 |
| judge | 0.811 | 0 |
## Dimension Scores
| Dimension | Weight | Score | Grade |
|-----------|--------|-------|-------|
| Triggering Accuracy | 25% | 0.850 | B |
| Orchestration Fitness | 20% | 0.780 | C+ |
| Output Quality | 15% | 0.820 | B- |
| Scope Calibration | 12% | 0.750 | C |
| Progressive Disclosure | 10% | 0.600 | D- |
| Token Efficiency | 6% | 0.910 | A- |
| ...
```
## Tooling
- **Package manager:** [uv](https://docs.astral.sh/uv/)
- **Linter/formatter:** [ruff](https://docs.astral.sh/ruff/) (target Python 3.12, line length 100)
- **Type checker:** [ty](https://docs.astral.sh/ty/)
- **Test framework:** pytest with pytest-asyncio
- **Build system:** hatchling
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# plugin-eval
Three-layer quality evaluation framework for Claude Code plugins.
## Quick Start
```bash
cd plugins/plugin-eval
uv sync
# Evaluate a skill (static only, instant)
uv run plugin-eval score path/to/skill --depth quick
# Evaluate with LLM judge (~30s)
uv run plugin-eval score path/to/skill --depth standard
# Full certification (all layers, ~5 min)
uv run plugin-eval certify path/to/skill
```
## Layers
1. **Static Analysis** — Structural checks, anti-pattern detection. Instant, free.
2. **LLM Judge** — Semantic evaluation (triggering, orchestration, output, scope). ~30s, 4 calls.
3. **Monte Carlo** — Statistical reliability via 50100 simulated runs. ~25 min.
## Commands
| CLI | Claude Code | Description |
| --------------------- | ----------- | ----------------------------- |
| `plugin-eval score` | `/eval` | Score a plugin or skill |
| `plugin-eval certify` | `/certify` | Full certification with badge |
| `plugin-eval compare` | `/compare` | Head-to-head comparison |
| `plugin-eval init` | — | Build corpus for Elo ranking |
## Documentation
See **[docs/plugin-eval.md](../../docs/plugin-eval.md)** for the full reference: layers, dimensions, scoring formula, anti-patterns, statistical methods, and project structure.