Semantic Knowledge

AI-powered chatbot and semantic search for WordPress using RAG (Retrieval-Augmented Generation).

Features

• 🤖 AI-powered chatbot with conversation history
• 🔍 Semantic search using vector embeddings
• 🚀 Built on OpenAI and Pinecone
• 🎨 Customizable UI components
• ♿ WCAG 2.1 Level AA accessible
• 🔧 Easy configuration via WordPress admin

Requirements

• PHP 8.0+
• Node.js 18+
• WordPress 6.0+
• Composer (for Composer installation)
• OpenAI API key
• Pinecone API key

Installation

Method 1: Composer (Recommended - Fully Automated)

# Install plugin
composer require kanopi/semantic-knowledge

# Activate plugin
wp plugin activate semantic-knowledge

# Indexer installs automatically during composer install! ✅

Why this works:

• Plugin's composer.json has post-install-cmd hook
• Automatically installs indexer into indexer/node_modules/
• No manual steps required

Method 2: WordPress.org

1. Download from WordPress.org (pending approval)
2. Upload to /wp-content/plugins/ or install via WordPress admin
3. Activate the plugin
4. Install indexer:

   wp semantic-knowledge install-indexer

   Or click "Install Indexer" button in WordPress admin

Method 3: Manual Installation

# Clone repository
cd wp-content/plugins
git clone https://github.com/kanopi/semantic-knowledge.git
cd semantic-knowledge

# Install PHP dependencies
composer install

# Install Node.js indexer
cd indexer
npm install

Configuration

1. API Keys

Add to wp-config.php:

define('OPENAI_API_KEY', 'sk-...');
define('PINECONE_API_KEY', 'pcsk_...');

Or set via WP-CLI:

wp config set OPENAI_API_KEY "sk-..." --type=constant
wp config set PINECONE_API_KEY "pcsk_..." --type=constant

2. Plugin Settings

1. Go to Settings → AI Assistant in WordPress admin
2. Configure:
   • Pinecone Index Host (e.g., your-index-123.pinecone.io)
   • Pinecone Index Name (e.g., wp-content)
   • Post Types to index
   • Chunk Size (default: 1000 characters)
   • Embedding Model (default: text-embedding-3-small)

3. Index Content

# Index all content
wp sk-indexer index

# Check system requirements
wp sk-indexer check

# View configuration
wp sk-indexer config

Usage

Chatbot

Add to any page or post using shortcode:

[wp_ai_chatbot]

Or via block editor: Add the AI Chatbot block

Search

Replace default WordPress search:

// In your theme's functions.php
add_filter('wp_ai_assistant_enable_search', '__return_true');

Or use the search widget in Appearance → Widgets

Development

Running Tests

# PHP tests
composer test

# Node.js indexer tests
cd indexer/node_modules/@kanopi/wp-ai-indexer
npm test

Code Quality

# PHP linting
composer phpcs

# JavaScript linting
npm run lint

Troubleshooting

Indexer Not Found

Problem: Plugin shows "Indexer not installed" notice

Solution:

# Check Node.js
node --version  # Should be 18+

# Install indexer
wp semantic-knowledge install-indexer

# Or manually
cd wp-content/plugins/semantic-knowledge/indexer
npm install

Authentication Errors

Problem: 401 Unauthorized errors when indexing

Solution:

• Verify API keys are set correctly
• Check Pinecone index exists and is active
• Ensure OpenAI API key has sufficient credits

No Search Results

Problem: Search returns no results

Solution:

# Re-index content
wp sk-indexer delete-all
wp sk-indexer index

# Check index status
wp sk-indexer config

Architecture

Built on a modular architecture:

• WP_AI_Core: Settings and configuration management
• WP_AI_OpenAI: OpenAI API integration
• WP_AI_Pinecone: Pinecone vector database integration
• WP_AI_Chatbot_Module: Chatbot functionality
• WP_AI_Search_Module: Search functionality
• @kanopi/wp-ai-indexer: Node.js indexing package (separate npm package)

Documentation

• Installation Guide
• Configuration
• API Documentation
• Troubleshooting
• Indexer Package

Contributing

See CONTRIBUTING.md

License

MIT License - see LICENSE

Support

• GitHub Issues
• Documentation