Notion MCP Server

A Model Context Protocol (MCP) server that connects Claude and other AI assistants to your Notion workspace. This integration allows AI assistants to interact with your Notion databases, pages, and blocks.

What is this?

This tool acts as a bridge between AI assistants (like Claude) and your Notion workspace. It allows the AI to:

View and search your Notion databases
Create and update pages
Manage content blocks
And much more!

Step-by-Step Setup Guide

Prerequisites

Node.js (version 14 or higher)
A Notion account
Claude Desktop app (if using with Claude)

1. Getting Your Notion API Key

Go to https://www.notion.so/my-integrations
Click the blue "+ New integration" button
Fill in the details:
- Name: Choose a name like "Claude Assistant" or "AI Helper"
- Logo: Optional
- Associated workspace: Select your Notion workspace
Click "Submit"
On the next page, find the "Internal Integration Token" section
Click "Show" and copy the token (it starts with secret_)

2. Setting Up This Server

Download this repository to your computer
- If you have Git: git clone [repository-url]
- Or download and extract the ZIP file
Open a command prompt or terminal
- Windows: Press Win+R, type cmd, and press Enter
- Mac: Open Terminal from Applications > Utilities
Navigate to the folder where you downloaded this repository:
```
cd path/to/notion-mcp-server
```
Install the required dependencies:
```
npm install
```
Create a configuration file:
- Make a copy of .env.example and name it .env
- Open the .env file in a text editor
- Replace your_notion_api_key_here with the token you copied earlier
- Save the file

3. Connecting to Notion Pages

For security, Notion requires you to explicitly grant access to each page or database:

Open Notion and navigate to a page or database you want the AI to access
Click the "•••" (three dots) in the top-right corner
Select "Add connections"
Find and select the integration you created earlier
Repeat for any other pages or databases you want to make accessible

4. Connecting to Claude Desktop

Locate your Claude Desktop configuration file:
- Windows: %APPDATA%\Claude\claude_desktop_config.json (Type this path in File Explorer address bar)
- Mac: ~/Library/Application Support/Claude/claude_desktop_config.json (In Finder, press Cmd+Shift+G and paste this path)

Open the file in a text editor. If it doesn't exist, create it with the following content:

{
  "mcpServers": {
    "notion": {
      "command": "node",
      "args": [
        "C:\\path\\to\\notion-mcp-server\\server.js"
      ],
      "env": {
        "NOTION_API_KEY": "your_notion_api_key_here"
      }
    }
  }
}

Replace:
- C:\\path\\to\\notion-mcp-server\\server.js with the actual path to the server.js file
  - Windows: Use double backslashes (\\) in the path
  - Mac: Use forward slashes (/)
- your_notion_api_key_here with your Notion API key
Save the file and restart Claude Desktop

5. Testing the Connection

Start a new conversation in Claude
Ask Claude to interact with your Notion workspace, for example:
- "Show me a list of my Notion databases"
- "Create a new page in my Tasks database with title 'Test Task'"

Available Tools

The server provides these tools to AI assistants:

list-databases: View all accessible databases
query-database: Get entries from a database
create-page: Add a new page to a database
update-page: Modify an existing page
create-database: Create a new database
update-database: Modify a database structure
get-page: View a specific page
get-block-children: View content blocks
append-block-children: Add content to a page
update-block: Edit content blocks
get-block: View a specific block
search: Find content across your workspace

Troubleshooting

Common Issues:

"Connection failed" in Claude
- Make sure the server path in claude_desktop_config.json is correct
- Check that your Notion API key is valid
- Ensure Node.js is installed correctly
"Access denied" when accessing Notion content
- Make sure you've shared the page/database with your integration
- Check that your API key has the necessary permissions
Server won't start
- Ensure all dependencies are installed (npm install)
- Check that the .env file exists with your API key

Getting Help

If you encounter issues not covered here, please:

Check the console output for error messages
Ensure your Notion API key is valid
Verify that your integration has access to the pages/databases

Running Tests

Environment Setup

Copy .env.example to .env
Fill in all required tokens such as NOTION_API_KEY, NOTION_DATABASE_ID, SLACK_BOT_TOKEN, and SLACK_APP_TOKEN

Python Tests

Run each test file directly with Python:

python test_notion.py
python test_database.py
python test_create_entry.py
python test_add_content.py
python test_read_content.py
python test_update_entry.py

Node Tests

Execute individual Node test scripts using Node. For example:

node slack-mcp/test_mcp_server.js

License

MIT