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py-mcp-qdrant-rag

by amornpan
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Python
Hybrid

py-mcp-qdrant-rag

A Model Context Protocol (MCP) server implementation for RAG (Retrieval-Augmented Generation) using Qdrant vector database with support for both Ollama and OpenAI embeddings.

Features

  • 🔍 Semantic Search: Search through stored documents using advanced semantic similarity

  • 📄 Multi-Format Support: Process various document formats including PDF, TXT, MD, DOCX, and more

  • 🌐 Web Scraping: Add documentation directly from URLs

  • 📁 Bulk Import: Import entire directories of documents at once

  • 🧠 Flexible Embeddings: Choose between Ollama (local) or OpenAI embeddings

  • 💾 Vector Storage: Efficient storage and retrieval using Qdrant vector database

  • 🔧 MCP Integration: Seamless integration with Claude Desktop application

  • ⚡ Fast Retrieval: Optimized vector search for quick information retrieval

Prerequisites

  • Python 3.11 or higher

  • Conda (Miniconda or Anaconda)

  • Qdrant vector database

  • Ollama for local embeddings OR OpenAI API key

  • Claude Desktop application

Installation

1. Clone the Repository

git clone https://github.com/amornpan/py-mcp-qdrant-rag.git cd py-mcp-qdrant-rag

2. Setup Conda Environment

For macOS/Linux:

# Grant permissions and run installation script chmod +x install_conda.sh ./install_conda.sh # Activate the environment conda activate mcp-rag-qdrant-1.0 # Install Ollama Python client pip install ollama # Pull the embedding model ollama pull nomic-embed-text # Get Python path (save this for later configuration) which python

For Windows:

# Create and activate environment conda create -n mcp-rag-qdrant-1.0 python=3.11 conda activate mcp-rag-qdrant-1.0 # Install required packages pip install ollama # Pull the embedding model ollama pull nomic-embed-text # Get Python path (save this for later configuration) where python

3. Start Qdrant Vector Database

Using Docker:

docker run -p 6333:6333 -v $(pwd)/qdrant_storage:/qdrant/storage qdrant/qdrant

Or using Qdrant Cloud:

4. Configure Claude Desktop

Locate your Claude Desktop configuration file:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

  • Windows: %APPDATA%\Claude\claude_desktop_config.json

  • Linux: ~/.config/claude/claude_desktop_config.json

Add the following configuration:

{ "mcpServers": { "mcp-rag-qdrant-1.0": { "command": "/path/to/conda/envs/mcp-rag-qdrant-1.0/bin/python", "args": [ "/path/to/py-mcp-qdrant-rag/run.py", "--mode", "mcp" ], "env": { "QDRANT_URL": "http://localhost:6333", "EMBEDDING_PROVIDER": "ollama", "OLLAMA_URL": "http://localhost:11434" } } } }

Important: Replace /path/to/... with the actual paths from your system.

5. Restart Claude Desktop

After saving the configuration, completely restart Claude Desktop to load the MCP server.

Usage

Once configured, you can interact with the RAG system directly in Claude Desktop using natural language commands.

Adding Documentation

From URLs:

"Add documentation from https://docs.python.org/3/tutorial/" "Index the content from https://github.com/user/repo/blob/main/README.md"

From Local Directories:

"Add all documents from /Users/username/Documents/project-docs" "Index all files in C:\Projects\Documentation"

Searching Documentation

"Search for information about authentication methods" "Find documentation about REST API endpoints" "What does the documentation say about error handling?" "Look up information on database configuration"

Managing Sources

"List all documentation sources" "Show me what documents are indexed" "What sources are available in the knowledge base?"

Configuration Options

Environment Variables

Variable

Description

Default

Required

QDRANT_URL

Qdrant server URL

http://localhost:6333

Yes

EMBEDDING_PROVIDER

Embedding provider (ollama or openai)

ollama

Yes

OLLAMA_URL

Ollama server URL (if using Ollama)

http://localhost:11434

If using Ollama

OPENAI_API_KEY

OpenAI API key (if using OpenAI)

-

If using OpenAI

COLLECTION_NAME

Qdrant collection name

documents

No

CHUNK_SIZE

Text chunk size for splitting

1000

No

CHUNK_OVERLAP

Overlap between chunks

200

No

EMBEDDING_MODEL

Model name for embeddings

nomic-embed-text (Ollama) or text-embedding-3-small (OpenAI)

No

Using OpenAI Embeddings

To use OpenAI embeddings instead of Ollama, update your configuration:

{ "mcpServers": { "mcp-rag-qdrant-1.0": { "command": "/path/to/python", "args": ["/path/to/run.py", "--mode", "mcp"], "env": { "QDRANT_URL": "http://localhost:6333", "EMBEDDING_PROVIDER": "openai", "OPENAI_API_KEY": "sk-your-openai-api-key-here" } } } }

Using Qdrant Cloud

For Qdrant Cloud deployment:

{ "env": { "QDRANT_URL": "https://your-cluster.qdrant.io", "QDRANT_API_KEY": "your-qdrant-api-key", "EMBEDDING_PROVIDER": "ollama", "OLLAMA_URL": "http://localhost:11434" } }

Supported File Types

The system automatically processes the following file types:

  • Text: .txt, .md, .markdown, .rst

  • Documents: .pdf, .docx, .doc, .odt

  • Code: .py, .js, .ts, .java, .cpp, .c, .h, .go, .rs, .php, .rb, .swift

  • Data: .json, .yaml, .yml, .xml, .csv

  • Web: HTML content from URLs

API Reference

Core Functions

add_documentation(url: str) -> dict

Add documentation from a web URL to the vector database.

Parameters:

  • url: The URL to fetch and index

Returns:

  • Dictionary with status and indexed chunks count

add_directory(path: str) -> dict

Recursively add all supported files from a directory.

Parameters:

  • path: Directory path to scan

Returns:

  • Dictionary with indexed files and total chunks

search_documentation(query: str, limit: int = 5) -> list

Search through stored documentation using semantic similarity.

Parameters:

  • query: Search query text

  • limit: Maximum number of results (default: 5)

Returns:

  • List of relevant document chunks with scores

list_sources() -> list

List all documentation sources in the database.

Returns:

  • List of unique source identifiers

Architecture

Project Structure

py-mcp-qdrant-rag/ ├── run.py # Main entry point ├── mcp_server.py # MCP server implementation ├── rag_engine.py # Core RAG functionality ├── embeddings/ │ ├── base.py # Embedding provider interface │ ├── ollama.py # Ollama embedding implementation │ └── openai.py # OpenAI embedding implementation ├── document_loader.py # Document processing and chunking ├── requirements.txt # Python dependencies ├── install_conda.sh # Installation script (Unix) └── tests/ # Unit tests

Component Overview

  1. MCP Server: Handles communication with Claude Desktop

  2. RAG Engine: Manages document indexing and retrieval

  3. Embedding Providers: Abstract interface for different embedding services

  4. Document Loader: Processes various file formats and splits text

  5. Vector Store: Qdrant integration for efficient similarity search

Development

Running in Standalone Mode

For development and testing without Claude Desktop:

conda activate mcp-rag-qdrant-1.0 python run.py --mode standalone

Running Tests

conda activate mcp-rag-qdrant-1.0 pytest tests/

Adding New File Types

To support additional file types, modify the SUPPORTED_EXTENSIONS in document_loader.py and implement the corresponding parser.

Troubleshooting

Common Issues

"Path not found" Error

  • Ensure all paths in configuration are absolute paths

  • Verify Python path is from the conda environment: which python

"Connection refused" to Qdrant

  • Check if Qdrant is running: docker ps

  • Verify the port: curl http://localhost:6333/health

"Connection refused" to Ollama

  • Ensure Ollama is running: ollama list

  • Check the service: curl http://localhost:11434/api/tags

Claude Desktop doesn't show MCP server

  • Verify JSON syntax in configuration file

  • Check Claude Desktop logs for errors

  • Ensure paths use forward slashes or escaped backslashes

Windows-Specific Issues

  1. Path format: Use double backslashes \\ or forward slashes /

  2. Firewall: Allow ports 6333 (Qdrant) and 11434 (Ollama)

  3. Admin rights: Run Anaconda Prompt as Administrator if needed

Debug Mode

Enable debug logging by adding to environment:

{ "env": { "LOG_LEVEL": "DEBUG", "QDRANT_URL": "http://localhost:6333", "EMBEDDING_PROVIDER": "ollama" } }

Performance Optimization

Chunking Strategy

  • Adjust CHUNK_SIZE for your document types

  • Increase CHUNK_OVERLAP for better context preservation

  • Use smaller chunks for technical documentation

Embedding Cache

  • Documents are embedded only once

  • Re-indexing skips unchanged files

  • Clear collection to force re-indexing

Search Optimization

  • Increase limit parameter for more results

  • Use specific technical terms for better precision

  • Combine searches with different phrasings

Contributing

We welcome contributions! Please follow these steps:

  1. Fork the repository

  2. Create a feature branch: git checkout -b feature/amazing-feature

  3. Make your changes and add tests

  4. Commit with clear messages: git commit -m 'Add amazing feature'

  5. Push to your fork: git push origin feature/amazing-feature

  6. Open a Pull Request

Development Guidelines

  • Follow PEP 8 style guide

  • Add unit tests for new features

  • Update documentation as needed

  • Ensure all tests pass before submitting

Security Considerations

  • API Keys: Never commit API keys to version control

  • File Access: The system only accesses explicitly provided paths

  • Network: Ensure Qdrant and Ollama are not exposed to public internet

  • Sensitive Data: Be cautious when indexing confidential documents

License

This project is provided for educational purposes. See the LICENSE file for details.

Acknowledgments

  • Anthropic for the Model Context Protocol

  • Qdrant for the excellent vector database

  • Ollama for local LLM infrastructure

  • OpenAI for embedding models

Support

For questions, issues, or feature requests:

  • Open an issue: GitHub Issues

  • Check existing issues before creating new ones

  • Provide detailed information for bug reports

Made with ❤️ by amornpan

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