The Pensieve MCP Server

What is The Pensieve MCP Server?

It is a TypeScript-based MCP server that implements a RAG-based knowledge management system. It allows users to store knowledge as markdown files and query them using natural language, with LLM-powered analysis and response synthesis. It is designed for developers using MCP clients like Claude Desktop.

How to use The Pensieve MCP Server?

Install dependencies with npm install, build the server with npm run build, then store knowledge as markdown files in the project’s root directory. Configure the server in Claude Desktop’s config file (claude_desktop_config.json) by adding an entry pointing to the built index.js. Query stored knowledge using the built-in tool ask_pensieve.

Key Features of The Pensieve MCP Server

• Access knowledge via memory:// URIs with metadata
• Markdown files for structured, categorized knowledge
• ask_pensieve tool for natural language queries
• LLM-powered analysis and contextual answer synthesis

Use Cases of The Pensieve MCP Server

• Personal knowledge management and note retrieval
• Querying study notes or research with natural language
• Organizing and searching project documentation
• Spotting patterns and links across stored knowledge

FAQ from The Pensieve MCP Server

What is the Pensieve MCP Server used for?

It is a RAG-based knowledge management system that stores knowledge as markdown files and allows natural language queries via an LLM.

How do I add knowledge to the Pensieve?

Place markdown files in the server’s root directory, using clear categories in filenames, one topic per file, with relevant metadata (dates, sources, etc.).

How do I configure the Pensieve with Claude Desktop?

Add a configuration entry to the Claude Desktop config file (located at `~/