Notion + Theia IDE: Complete MCP Integration
Notion is a MCP server that Notion's official hosted MCP server providing secure AI tool access to workspace content including pages, databases, and comments through OAuth authentication..
When integrated with Theia IDE, you can:
- Search and retrieve live context from Notion workspace based on user access and permissions
- Access and query Notion databases to retrieve structured information
- Read page content and metadata from workspace pages you have access to
This guide provides step-by-step instructions to set up Notion in Theia IDE, including configuration, examples, and troubleshooting.
What You'll Achieve
After completing this setup:
- Notion will be fully integrated and operational
- You can use Notion tools directly in Theia IDE
- All Notion capabilities will be available for your workflows
- Access to 4 different tools
Prerequisites
Before starting, ensure you have:
- Node.js 18 or higher (for STDIO transport only)
- Active Notion workspace with appropriate access permissions
- MCP client that supports remote servers (HTTP/SSE) or STDIO transport
- Notion account with workspace access
- Supported AI tool with MCP client capabilities
- Permission to connect external applications to workspace
- Theia IDE installed and configured
- Compatible operating system (Desktop, Web)
Installation
Step 1: Install Notion
Install using npm:
npx -y mcp-remote https://mcp.notion.com/mcp
Verify installation:
Connection verified through OAuth flow in your AI tool
Configuration
Step 2: Configure Theia IDE
- Open Theia IDE settings
- Navigate to MCP server configuration
- Add Notion server with appropriate settings
- Save and restart if needed
Examples
Once configured, you can use Notion in Theia IDE:
Create Project Documentation
Generate PRDs, tech specs, or architecture docs by pulling context from existing Notion pages
Ask Theia IDE: "Create a technical specification for the new authentication system based on our security guidelines in Notion"
Expected Result: AI retrieves security guidelines from Notion workspace and generates comprehensive tech spec
Track Campaign Progress
Monitor and report on campaign status using Notion database data
Ask Theia IDE: "Give me a summary of all marketing campaigns in progress with their current metrics"
Expected Result: AI queries the campaigns database and provides formatted progress report
Search Meeting Notes
Find specific information across all meeting notes in workspace
Ask Theia IDE: "What decisions did we make about the API redesign in recent meetings?"
Expected Result: AI searches meeting notes and returns relevant decisions with links to source pages
Generate Release Notes
Build release documentation by aggregating information from multiple Notion pages
Ask Theia IDE: "Create release notes for version 2.0 using our changelog and feature pages"
Expected Result: AI compiles information from multiple pages into formatted release notes
Task Management
Query and analyze tasks from Notion databases
Ask Theia IDE: "Show me all overdue tasks assigned to the engineering team"
Expected Result: AI filters and presents overdue engineering tasks with details and links
Testing Your Setup
- Launch Theia IDE
- Verify Notion is available in the tools list
- Test basic Notion functionality
Troubleshooting
Common Issues
AI Tool Cannot Connect to Notion MCP
Symptoms: Connection timeout or failed errors, Notion MCP not appearing in tool directory, OAuth flow not starting
Cause: AI tool may not support MCP clients or remote MCP connections
Solution:
- Verify your AI tool supports MCP client functionality
- Check if tool supports remote MCP servers (HTTP/SSE transport)
- For tools without remote support, use STDIO with mcp-remote proxy: npx -y mcp-remote https://mcp.notion.com/mcp
- If tool lacks MCP support entirely, request feature from developers
OAuth Connection Fails
Symptoms: Authorization screen does not appear, Cannot complete OAuth flow, Connection succeeds but no workspace access
Cause: OAuth flow interrupted or workspace permissions issue
Solution:
- Use Notion app Settings > Connections > Notion MCP for easiest setup
- Ensure popup blockers are disabled during OAuth
- Check you have appropriate workspace permissions
- Try disconnecting and reconnecting through Notion app
Cannot Access Specific Pages or Databases
Symptoms: Some content returns not found errors, Searches return incomplete results, Database queries fail or return empty
Cause: Content access based on user permissions - AI tool can only see what you can see
Solution:
- Verify you have access to the pages/databases in Notion app
- Check workspace sharing settings for restricted content
- Ensure pages are not in private sections you cannot access
- Contact workspace admin if you need broader access
STDIO Transport Connection Issues
Symptoms: mcp-remote command fails, Connection drops frequently, Slow response times
Cause: STDIO transport requires mcp-remote proxy for hosted Notion MCP
Solution:
- Prefer Streamable HTTP or SSE transport if your tool supports it
- Ensure Node.js and npx are properly installed for STDIO
- Use config: npx -y mcp-remote https://mcp.notion.com/mcp
- Check network connectivity to mcp.notion.com
Tool Does Not Support Remote MCP Servers
Symptoms: Only local/STDIO servers work in tool, HTTP/SSE connections not available, No option to add remote server URL
Cause: Some MCP clients only support local STDIO servers
Solution:
- Use mcp-remote as proxy to convert HTTP to STDIO
- Configuration: command: npx, args: [-y, mcp-remote, https://mcp.notion.com/mcp]
- Alternative: Use open-source notion-mcp-server for local deployment
- Check tool documentation for remote server support roadmap
Tool Not Recognized
Symptoms: AI says it does not have the tool
Cause: Configuration not saved or syntax error in JSON
Solution:
- Check for red squiggles in settings.json
- Restart the IDE to ensure config reload
Notion not appearing in Theia IDE
Symptoms: Server not listed, Tools not available
Cause: Configuration or installation issue
Solution:
- Verify configuration syntax
- Check Notion installation
- Restart Theia IDE
- Check logs for error messages
Next Steps
Now that Notion is integrated with Theia IDE:
- Explore all Notion capabilities through Theia IDE
- Check out other MCP servers that work with Theia IDE
- Join the MCP community for tips and support
- Consider contributing to Notion development
Need Help?
- Search for Notion documentation
- Check the Theia IDE MCP guide
- Join the MCP community discussions