knowledge-mcp

A personal MCP server that lets Claude (Claude Code, Claude Desktop, etc.) export knowledge and experience into a personal knowledge corpus — a folder of markdown files that acts as your knowledge base.

Entries are markdown files with YAML frontmatter (created/updated timestamps, tags, source), organized into category folders. Every write regenerates an index.md at the corpus root listing all entries by category.

Tools

Writes are confined to the knowledge base root — path traversal outside it is rejected. Only markdown files directly inside category folders (and the root) are indexed.

Related MCP server: private-journal

Setup

Requires uv. Install dependencies once:

cd /path/to/knowledge-mcp
uv sync

Claude Code

claude mcp add --scope user knowledge \
  --env KNOWLEDGE_MCP_ROOT=/path/to/your/Knowledge -- \
  uv run --directory /path/to/knowledge-mcp knowledge-mcp

(--scope user makes it available in every project; drop it for project-only.)

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or the equivalent on your platform:

{
  "mcpServers": {
    "knowledge": {
      "command": "uv",
      "args": [
        "run",
        "--directory",
        "/path/to/knowledge-mcp",
        "knowledge-mcp"
      ],
      "env": {
        "KNOWLEDGE_MCP_ROOT": "/path/to/your/Knowledge"
      }
    }
  }
}

Then restart Claude Desktop.

Configuration

Manual run / smoke test

uv run knowledge-mcp   # starts the stdio server (Ctrl-C to stop)