ra-h-os/apps/mcp-server-standalone/README.md

RA-H MCP Server

Connect Claude Code and Claude Desktop to your RA-H knowledge base. Direct SQLite access - works without the RA-H app running.

Install

npx ra-h-mcp-server

That's it. No manual setup required.

Configure Claude Code / Claude Desktop

Add to your Claude config (~/.claude.json or Claude Desktop settings):

{
  "mcpServers": {
    "ra-h": {
      "command": "npx",
      "args": ["ra-h-mcp-server"]
    }
  }
}

Restart Claude. Done.

Requirements

• Node.js 18+
• Database is created automatically at ~/Library/Application Support/RA-H/db/rah.sqlite on first connection

Environment Variables

Variable	Default	Description
RAH_DB_PATH	~/Library/Application Support/RA-H/db/rah.sqlite	Database path

What to Expect

Once connected, Claude will:

• Call rah_get_context first to orient itself (stats, hub nodes, dimensions, guides)
• Proactively capture knowledge — when a new insight, decision, person, or reference surfaces, it proposes a specific node (title, dimensions, description) so you can approve with minimal friction
• Read guides for complex tasks — system guides (immutable) teach it how your graph works; custom guides teach it your workflows
• Search before creating to avoid duplicates

Available Tools

Tool	Description
rah_get_context	Get graph overview — stats, hub nodes, dimensions, recent activity
rah_add_node	Create a new node
rah_search_nodes	Search nodes by keyword
rah_get_nodes	Load nodes by ID
rah_update_node	Update an existing node
rah_create_edge	Create connection between nodes
rah_update_edge	Update an edge explanation
rah_query_edges	Find edges for a node
rah_list_dimensions	List all dimensions
rah_create_dimension	Create a dimension
rah_update_dimension	Update/rename a dimension
rah_delete_dimension	Delete a dimension
rah_list_guides	List available guides (system + custom)
rah_read_guide	Read a guide by name
rah_write_guide	Create or update a custom guide
rah_delete_guide	Delete a custom guide

Guides

Guides are detailed instruction sets that teach Claude how to work with your knowledge base. System guides (schema, creating-nodes, edges, dimensions, extract) are bundled and immutable. You can create up to 10 custom guides for your own workflows.

Guides are stored at ~/Library/Application Support/RA-H/guides/ and shared with the main app.

What's NOT Included

This is a lightweight CRUD server. Advanced features are handled by the main app:

• Embedding generation
• AI-powered edge inference
• Content extraction (URL, YouTube, PDF)
• Real-time SSE events

Testing

# Test database connection
node -e "const {initDatabase,query}=require('./services/sqlite-client');initDatabase();console.log(query('SELECT COUNT(*) as c FROM nodes')[0].c,'nodes')"

# Run the server
node index.js