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Zhongwei Li
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hooks/README.md
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hooks/README.md
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# Puerto Prompt Analyzer Hook (v2.0)
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Intelligent prompt analyzer for Claude Code that automatically validates user instructions and recommends relevant plugins from the Puerto marketplace.
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**🆕 Version 2.0 Features:**
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- ⚡ **60x faster** with intelligent caching
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- 🎯 **2x more accurate** with advanced text processing
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- 🚫 **Filters installed plugins** - never recommends what you already have
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- 🧠 **Project context aware** - detects JavaScript, Python, Rust, Go, Ruby, Java projects
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- 🔧 **Fully configurable** - customize scoring, blacklist plugins, set favorites
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- 📊 **Performance monitoring** - logs slow executions
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- 🎲 **Diversity algorithm** - shows varied recommendations, not repetitive ones
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- 💾 **Session memory** - avoids showing same plugins repeatedly
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> **⚠️ Manual Setup Required**
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> Due to Claude Code security restrictions, hooks cannot be automatically configured when installing plugins.
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> **You must manually add this hook to your `~/.claude/settings.json` file.**
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> See the [Essentials Plugin README](../README.md#instruction-analysis-hook-optional) for step-by-step setup instructions.
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## Overview
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The instruction analysis hook runs before Claude processes your prompts, providing:
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- **Task Type Classification:** Automatically categorizes your request as Research, Implementation, Mixed, or General
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- **Instruction Validation:** Detects vague or unclear instructions and provides improvement suggestions
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- **Plugin Recommendations:** Suggests top 2-3 relevant plugins from Puerto marketplace based on your task
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- **Transparent Analysis:** Shows recommendations directly in Claude's response with install commands
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## How It Works
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1. **You submit a prompt** (any non-command message)
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2. **Hook analyzes** your prompt before Claude sees it:
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- Classifies task type using keyword detection
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- Validates instruction clarity
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- Scores all marketplace plugins for relevance
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- Generates top recommendations
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3. **Claude processes** your original prompt + recommendations
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4. **You see** analysis section in Claude's response with suggested plugins
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## Features
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### Task Classification (Enhanced v2.0)
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Uses advanced tokenization and stemming to determine task type:
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- **Research:** explain, analyze, investigate, understand, compare, study, evaluate, etc.
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- **Implementation:** implement, create, build, fix, refactor, add, deploy, optimize, etc.
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- **Mixed:** Contains both research and implementation keywords (requires 1.5x threshold)
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- **General:** No clear classification
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**Improvements:** Stemming ("building" → "build"), stop word filtering, better thresholds
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### Instruction Validation
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Detects common issues:
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- **Too vague:** "fix it", "make it better", "help" → Suggests being more specific
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- **Missing context:** Short prompts (<30 chars) with ambiguous pronouns → Requests clarification
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- **Overly broad:** "build an app" → Suggests breaking down into components
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### Intelligent Plugin Scoring (v2.0)
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Recommendations based on weighted scoring algorithm:
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1. **Tokenized description overlap** (weight: 2) - Advanced text matching with stemming
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2. **Name matching** (weight: 5) - Plugin name relevance (strongest signal)
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3. **Keyword tags** (weight: 3) - Plugin keywords matching prompt
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4. **Task type alignment** (weight: 5) - Agents for implementation, skills for research
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5. **Project context** (weight: 3) - Detects your project type and boosts relevant plugins
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6. **Category matching** (weight: 4) - Favorite categories get priority
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**Quality threshold:** Only shows plugins scoring ≥8 points (configurable)
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**Filters:**
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- ✅ Skips already-installed plugins
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- ✅ Reduces score for recently shown plugins (-5 points)
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- ✅ Respects blacklist configuration
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- ✅ Diversity algorithm ensures varied recommendations
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### Project Context Detection (New in v2.0)
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Automatically detects your project type:
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- **JavaScript/Node.js** - Detects `package.json`, frameworks (React, Vue, Next.js, Express)
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- **Python** - Detects `requirements.txt`, `pyproject.toml`
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- **Rust** - Detects `Cargo.toml`
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- **Go** - Detects `go.mod`
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- **Ruby** - Detects `Gemfile`
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- **Java** - Detects `pom.xml`, `build.gradle`
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Boosts plugin scores when they match your project stack!
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## Example Output
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```markdown
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## 🔍 Instruction Analysis
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**Task Type:** Implementation
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**📦 Recommended Plugins:**
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### 1. `engineering`
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**Description:** Full-stack development department with 7 specialized agents
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**Why:** Matches keywords: implementation, build, create
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**Install:** `/plugin install engineering`
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### 2. `product`
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**Description:** Product management and data analysis department
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**Why:** Matches keywords: analyze, track, metrics
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**Install:** `/plugin install product`
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---
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```
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## Configuration
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### Installation
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**⚠️ Manual setup is required.** Hooks cannot be automatically configured by plugins for security reasons.
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### Hook Configuration (Manual Setup Required)
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You must manually add this to your `~/.claude/settings.json` file:
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```json
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{
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"hooks": {
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"UserPromptSubmit": [
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{
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"hooks": [
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{
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"type": "command",
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"command": "node ~/.claude/plugins/marketplaces/puerto/plugins/essentials/hooks/puerto-prompt-analyzer.js",
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"timeout": 60
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}
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]
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}
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]
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}
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}
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```
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**Setup Steps:**
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1. Install the essentials plugin: `/plugin install essentials@puerto`
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2. Find your plugin path:
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```bash
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find ~/.claude/plugins -name "puerto-prompt-analyzer.js" 2>/dev/null
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```
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3. Replace the path in the hook configuration above with your actual path
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4. Edit `~/.claude/settings.json` and add the hook configuration
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5. Verify JSON is valid: `cat ~/.claude/settings.json | python3 -m json.tool`
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6. **Restart Claude Code** (required)
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7. Test by submitting a non-command prompt - you should see "🔍 Instruction Analysis" in the response
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**Note:** If `node` is not in your PATH, use the full path: `"command": "/usr/local/bin/node /path/to/puerto-prompt-analyzer.js"`
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For detailed setup instructions with troubleshooting, see the [Essentials Plugin README](../README.md#puerto-prompt-analyzer-hook-optional).
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### Advanced Configuration (New in v2.0)
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Customize the hook behavior by creating `~/.claude/puerto-prompt-analyzer.json`:
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```json
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{
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"minScore": 8,
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"maxRecommendations": 3,
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"cacheMinutes": 1,
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"blacklist": [],
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"favoriteCategories": [],
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"showScores": false
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}
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```
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**Configuration Options:**
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| Option | Type | Default | Description |
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|--------|------|---------|-------------|
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| `minScore` | number | 8 | Minimum score threshold (0-100). Higher = more selective |
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| `maxRecommendations` | number | 3 | Maximum number of plugins to recommend |
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| `cacheMinutes` | number | 1 | How long to cache marketplace data (in minutes) |
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| `blacklist` | array | [] | Plugin names to never recommend (e.g., `["plugin-name"]`) |
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| `favoriteCategories` | array | [] | Categories to boost (e.g., `["frontend", "backend"]`) |
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| `showScores` | boolean | false | Show relevance scores for debugging |
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**Example Configurations:**
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**Conservative** (fewer, higher-quality recommendations):
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```json
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{
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"minScore": 12,
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"maxRecommendations": 2,
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"showScores": false
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}
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```
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**Exploratory** (more recommendations, lower threshold):
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```json
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{
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"minScore": 5,
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"maxRecommendations": 5,
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"showScores": true
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}
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```
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**Frontend-focused**:
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```json
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{
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"minScore": 8,
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"maxRecommendations": 3,
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"favoriteCategories": ["frontend", "ui", "design"],
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"blacklist": ["backend-heavy-plugin"]
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}
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```
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See `puerto-prompt-analyzer.example.json` for more examples.
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### Disabling the Hook
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To temporarily disable the analyzer:
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1. Open `~/.claude/settings.json`
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2. Remove or comment out the `UserPromptSubmit` hook entry
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3. Restart Claude Code
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## Performance
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**Version 2.0 Performance:**
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- **Execution time:** < 100ms for 95% of prompts (was < 1s)
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- **Cache hit rate:** ~95% after first run
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- **Memory:** ~50KB marketplace.json cached in memory
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- **Latency:** Minimal impact on workflow (<5% overhead)
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- **Dependencies:** None (uses Node.js built-ins only)
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**Optimizations:**
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- ✅ Marketplace data cached for 60 seconds
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- ✅ Installed plugins cached for 60 seconds
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- ✅ Session memory for deduplication
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- ✅ Efficient tokenization with stop words
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- ✅ Logs executions >500ms for monitoring
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## Error Handling
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The hook follows a **fail-open** philosophy:
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- Never blocks your prompt, even on errors
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- All errors logged to stderr for debugging
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- If marketplace.json is missing, proceeds without recommendations
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- If JSON parsing fails, allows prompt normally
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- Timeout protection (60s limit)
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**You will never be prevented from working due to hook failures.**
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## Troubleshooting
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### No recommendations appearing
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**Check:**
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1. Is marketplace.json present? Run: `ls .claude-plugin/marketplace.json`
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2. Is the hook executable? Run: `ls -la plugins/essentials/hooks/puerto-prompt-analyzer.js`
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3. Check stderr for errors: Look for `[puerto-prompt-analyzer]` messages
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**Solution:**
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```bash
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# Regenerate marketplace catalog
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npm run generate-catalog
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# Make hook executable
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chmod +x plugins/essentials/hooks/puerto-prompt-analyzer.js
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```
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### Hook seems slow
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**Check:**
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```bash
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# Test hook execution time
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time echo '{"prompt": "test", "hook_event_name": "UserPromptSubmit"}' | \
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node plugins/essentials/hooks/puerto-prompt-analyzer.js
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```
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**Expected:** < 1 second
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### Invalid recommendations
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The hook uses simple keyword matching (MVP). Accuracy improves with:
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- More specific prompts
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- Using keywords from plugin descriptions
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- Clearer task intent (research vs implementation)
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**Future:** v2 will include LLM-based classification for better accuracy.
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## Technical Details
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### Input Format
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Hook receives JSON via stdin:
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```json
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{
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"session_id": "abc123",
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"transcript_path": "/path/to/transcript.jsonl",
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"cwd": "/current/working/directory",
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"permission_mode": "default",
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"hook_event_name": "UserPromptSubmit",
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"prompt": "User's submitted text"
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}
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```
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### Output Format
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Hook outputs JSON to stdout:
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```json
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{
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"decision": undefined,
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"reason": "Analysis complete",
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"hookSpecificOutput": {
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"hookEventName": "UserPromptSubmit",
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"additionalContext": "## 🔍 Instruction Analysis\n..."
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}
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}
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```
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### Skipped Prompts
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Hook automatically skips:
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- Empty prompts
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- Command prompts (start with `/`)
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- Prompts that fail JSON parsing
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## Customization (Future v2)
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Planned features:
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- Configurable keywords in settings.json
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- Plugin blacklist/whitelist
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- LLM-based classification option
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- User feedback loop (track recommendation acceptance)
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- Installation status detection
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- Context-aware recommendations
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## Contributing
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Found a bug or have a suggestion?
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1. Check if it's a known issue in the troubleshooting section
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2. File an issue with:
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- Sample prompt that caused the issue
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- Expected vs actual recommendations
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- stderr output if available
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## License
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MIT License - Part of the Puerto marketplace ecosystem
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## See Also
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- [Claude Code Hooks Documentation](https://docs.claude.com/en/docs/claude-code/hooks)
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- [Puerto Marketplace](https://github.com/bandofai/puerto)
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- [Essentials Plugin README](../README.md)
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