mcp-memory-libsql
A high-performance, persistent memory system for the Model Context Protocol (MCP) powered by libSQL. This server provides vector search capabilities and efficient knowledge storage using libSQL as the backing store.
Features
- 🚀 High-performance vector search using libSQL
- 💾 Persistent storage of entities and relations
- 🔍 Semantic search capabilities
- 🔄 Knowledge graph management
- 🌐 Compatible with local and remote libSQL databases
- 🔒 Secure token-based authentication for remote databases
Configuration
This server is designed to be used as part of an MCP configuration. Here are examples for different environments:
Cline Configuration
Add this to your Cline MCP settings:
{
"mcpServers": {
"mcp-memory-libsql": {
"command": "npx",
"args": ["-y", "mcp-memory-libsql"],
"env": {
"LIBSQL_URL": "file:/path/to/your/database.db"
}
}
}
}
Claude Desktop with WSL Configuration
For a detailed guide on setting up this server with Claude Desktop in WSL, see Getting MCP Server Working with Claude Desktop in WSL.
Add this to your Claude Desktop configuration for WSL environments:
{
"mcpServers": {
"mcp-memory-libsql": {
"command": "wsl.exe",
"args": [
"bash",
"-c",
"source ~/.nvm/nvm.sh && LIBSQL_URL=file:/path/to/database.db /home/username/.nvm/versions/node/v20.12.1/bin/npx mcp-memory-libsql"
]
}
}
}
Database Configuration
The server supports both local SQLite and remote libSQL databases through the LIBSQL_URL environment variable:
For local SQLite databases:
{
"env": {
"LIBSQL_URL": "file:/path/to/database.db"
}
}
For remote libSQL databases (e.g., Turso):
{
"env": {
"LIBSQL_URL": "libsql://your-database.turso.io",
"LIBSQL_AUTH_TOKEN": "your-auth-token"
}
}
Note: When using WSL, ensure the database path uses the Linux
filesystem format (e.g., /home/username/...) rather than Windows
format.
By default, if no URL is provided, it will use file:/memory-tool.db
in the current directory.
API
The server implements the standard MCP memory interface with additional vector search capabilities:
- Entity Management
- Create/Update entities with embeddings
- Delete entities
- Search entities by similarity
- Relation Management
- Create relations between entities
- Delete relations
- Query related entities
Architecture
The server uses a libSQL database with the following schema:
- Entities table: Stores entity information and embeddings
- Relations table: Stores relationships between entities
- Vector search capabilities implemented using libSQL's built-in vector operations
Development
Publishing
Due to npm 2FA requirements, publishing needs to be done manually:
- Create a changeset (documents your changes):
pnpm changeset
- Version the package (updates version and CHANGELOG):
pnpm changeset version
- Publish to npm (will prompt for 2FA code):
pnpm release
Contributing
Contributions are welcome! Please read our contributing guidelines before submitting pull requests.
License
MIT License - see the LICENSE file for details.
Acknowledgments
- Built on the Model Context Protocol
- Powered by libSQL