Notion MCP

Access Notion via MCP (Model Context Protocol) with managed authentication.

Quick Start

python \x3C\x3C'EOF'
import urllib.request, os, json
data = json.dumps({'query': 'meeting notes', 'query_type': 'internal'}).encode()
req = urllib.request.Request('https://gateway.maton.ai/notion/notion-search', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Base URL

https://gateway.maton.ai/notion/{tool-name}

Replace {tool-name} with the MCP tool name (e.g., notion-search). The gateway proxies requests to mcp.notion.com and automatically injects your credentials.

Request Headers

MCP requests use the Mcp-Session-Id header for session management. If not specified, the gateway initializes a new session and returns the session ID in the Mcp-Session-Id response header. You can include this session ID in subsequent requests to reuse the same session.

Authentication

All requests require the Maton API key:

Authorization: Bearer $MATON_API_KEY

Environment Variable: Set your API key as MATON_API_KEY:

export MATON_API_KEY="YOUR_API_KEY"

Getting Your API Key

1. Sign in or create an account at maton.ai
2. Go to maton.ai/settings
3. Copy your API key

Connection Management

Manage your Notion MCP connections at https://ctrl.maton.ai.

List Connections

python \x3C\x3C'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections?app=notion&method=MCP&status=ACTIVE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Create Connection

python \x3C\x3C'EOF'
import urllib.request, os, json
data = json.dumps({'app': 'notion', 'method': 'MCP'}).encode()
req = urllib.request.Request('https://ctrl.maton.ai/connections', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Get Connection

python \x3C\x3C'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Response:

{
  "connection": {
    "connection_id": "21fd90f9-5935-43cd-b6c8-bde9d915ca80",
    "status": "PENDING",
    "creation_time": "2025-12-08T07:20:53.488460Z",
    "url": "https://connect.maton.ai/?session_token=...",
    "app": "notion",
    "method": "MCP",
    "metadata": {}
  }
}

Open the returned url in a browser to complete OAuth authorization.

Delete Connection

python \x3C\x3C'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections/{connection_id}', method='DELETE')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Specifying Connection

If you have multiple Notion connections (eg. OAuth2, MCP), you must specify which MCP connection to use with the Maton-Connection header:

python \x3C\x3C'EOF'
import urllib.request, os, json
data = json.dumps({'query': 'meeting notes', 'query_type': 'internal'}).encode()
req = urllib.request.Request('https://gateway.maton.ai/notion/notion-search', data=data, method='POST')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
req.add_header('Content-Type', 'application/json')
req.add_header('Maton-Connection', '21fd90f9-5935-43cd-b6c8-bde9d915ca80')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

IMPORTANT: If omitted, the gateway uses the default (oldest) active connection, which may fail if it's not an MCP connection.

MCP Reference

All MCP tools use POST method:

Search

Search for pages and databases:

POST /notion/notion-search
Content-Type: application/json

{
  "query": "meeting notes",
  "query_type": "internal"
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"results\":[{\"id\":\"30702dc5-9a3b-8106-b51b-ed6d1bfeeed4\",\"title\":\"Meeting Summary Report\",\"url\":\"https://www.notion.so/30702dc59a3b8106b51bed6d1bfeeed4\",\"type\":\"page\",\"highlight\":\"Meeting materials\",\"timestamp\":\"2026-02-15T00:07:00.000Z\"}],\"type\":\"workspace_search\"}"
    }
  ],
  "isError": false
}

Search for users:

POST /notion/notion-search
Content-Type: application/json

{
  "query": "[email protected]",
  "query_type": "user"
}

With date filter:

POST /notion/notion-search
Content-Type: application/json

{
  "query": "quarterly report",
  "query_type": "internal",
  "filters": {
    "created_date_range": {
      "start_date": "2024-01-01",
      "end_date": "2025-01-01"
    }
  }
}

Fetch Content

Fetch page by URL:

POST /notion/notion-fetch
Content-Type: application/json

{
  "id": "https://notion.so/workspace/Page-a1b2c3d4e5f67890"
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"metadata\":{\"type\":\"page\"},\"title\":\"Project Overview\",\"url\":\"https://www.notion.so/30702dc59a3b8106b51bed6d1bfeeed4\",\"text\":\"Here is the result of \\\"view\\\" for the Page with URL https://www.notion.so/30702dc59a3b8106b51bed6d1bfeeed4 as of 2026-02-14T22:56:21.276Z:\\
\x3Cpage url=\\\"https://www.notion.so/30702dc59a3b8106b51bed6d1bfeeed4\\\">\\
\x3Cproperties>\\
{\\\"title\\\":\\\"Project Overview\\\"}\\
\x3C/properties>\\
\x3Ccontent>\\
# Project Overview\\
\\
This document outlines the project goals and milestones.\\
\x3C/content>\\
\x3C/page>\"}"
    }
  ],
  "isError": false
}

Fetch by UUID:

POST /notion/notion-fetch
Content-Type: application/json

{
  "id": "12345678-90ab-cdef-1234-567890abcdef"
}

Fetch data source (collection):

POST /notion/notion-fetch
Content-Type: application/json

{
  "id": "collection://12345678-90ab-cdef-1234-567890abcdef"
}

Include discussions:

POST /notion/notion-fetch
Content-Type: application/json

{
  "id": "page-uuid",
  "include_discussions": true
}

Create Pages

Create a simple page:

POST /notion/notion-create-pages
Content-Type: application/json

{
  "pages": [
    {
      "properties": {"title": "My New Page"},
      "content": "# Introduction\
\
This is my new page content."
    }
  ]
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"pages\":[{\"id\":\"31502dc5-9a3b-816d-a2ac-e9b7ec9aece7\",\"url\":\"https://www.notion.so/31502dc59a3b816da2ace9b7ec9aece7\",\"properties\":{\"title\":\"My New Page\"}}]}"
    }
  ],
  "isError": false
}

Create page under parent:

POST /notion/notion-create-pages
Content-Type: application/json

{
  "parent": {"page_id": "a1b2c3d4-e5f6-7890-abcd-ef1234567890"},
  "pages": [
    {
      "properties": {"title": "Child Page"},
      "content": "# Child Page Content"
    }
  ]
}

Create page in data source (database):

POST /notion/notion-create-pages
Content-Type: application/json

{
  "parent": {"data_source_id": "f336d0bc-b841-465b-8045-024475c079dd"},
  "pages": [
    {
      "properties": {
        "Task Name": "New Task",
        "Status": "In Progress",
        "Priority": 5,
        "Is Complete": "__NO__",
        "date:Due Date:start": "2024-12-25"
      }
    }
  ]
}

Update Page

Update properties:

POST /notion/notion-update-page
Content-Type: application/json

{
  "page_id": "f336d0bc-b841-465b-8045-024475c079dd",
  "command": "update_properties",
  "properties": {
    "title": "Updated Page Title",
    "Status": "Done"
  }
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"page_id\":\"f336d0bc-b841-465b-8045-024475c079dd\"}"
    }
  ],
  "isError": false
}

Replace entire content:

POST /notion/notion-update-page
Content-Type: application/json

{
  "page_id": "f336d0bc-b841-465b-8045-024475c079dd",
  "command": "replace_content",
  "new_str": "# New Heading\
\
Completely replaced content."
}

Replace content range:

POST /notion/notion-update-page
Content-Type: application/json

{
  "page_id": "f336d0bc-b841-465b-8045-024475c079dd",
  "command": "replace_content_range",
  "selection_with_ellipsis": "# Old Section...end of section",
  "new_str": "# New Section\
\
Updated section content."
}

Insert content after:

POST /notion/notion-update-page
Content-Type: application/json

{
  "page_id": "f336d0bc-b841-465b-8045-024475c079dd",
  "command": "insert_content_after",
  "selection_with_ellipsis": "## Previous section...",
  "new_str": "\
## New Section\
\
Inserted content here."
}

Move Pages

Move to page:

POST /notion/notion-move-pages
Content-Type: application/json

{
  "page_or_database_ids": ["31502dc5-9a3b-816d-a2ac-e9b7ec9aece7"],
  "new_parent": {
    "page_id": "31502dc5-9a3b-81e4-b090-c6f705459e38"
  }
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"result\":\"Successfully moved 1 item: 31502dc5-9a3b-816d-a2ac-e9b7ec9aece7\"}"
    }
  ],
  "isError": false
}

Move to workspace:

POST /notion/notion-move-pages
Content-Type: application/json

{
  "page_or_database_ids": ["page-id-1", "page-id-2"],
  "new_parent": {
    "type": "workspace"
  }
}

Move to database:

POST /notion/notion-move-pages
Content-Type: application/json

{
  "page_or_database_ids": ["page-id"],
  "new_parent": {
    "data_source_id": "f336d0bc-b841-465b-8045-024475c079dd"
  }
}

Duplicate Page

POST /notion/notion-duplicate-page
Content-Type: application/json

{
  "page_id": "31502dc5-9a3b-816d-a2ac-e9b7ec9aece7"
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"page_id\":\"31502dc5-9a3b-812d-a865-ccac00a21f72\",\"page_url\":\"https://www.notion.so/31502dc59a3b812da865ccac00a21f72\"}"
    }
  ],
  "isError": false
}

Create Database

Create with SQL DDL schema:

POST /notion/notion-create-database
Content-Type: application/json

{
  "title": "Task Database",
  "schema": "CREATE TABLE (\"Task Name\" TITLE, \"Status\" SELECT('To Do':red, 'In Progress':yellow, 'Done':green), \"Priority\" NUMBER)"
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"result\":\"Created database: \x3Cdatabase url=\\\"{{https://www.notion.so/2a3cdbb18c1c475b909a84e5615c7b74}}\\\" inline=\\\"false\\\">\\
The title of this Database is: Task Database\\
\x3Cdata-sources>\\
\x3Cdata-source url=\\\"{{collection://c0f0ce51-c470-4e96-8c3f-cafca780f1a0}}\\\">\\
...\"}"
    }
  ],
  "isError": false
}

Update Data Source

POST /notion/notion-update-data-source
Content-Type: application/json

{
  "data_source_id": "c0f0ce51-c470-4e96-8c3f-cafca780f1a0",
  "name": "Updated Database Name"
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"result\":\"Updated data source: \x3Cdatabase url=\\\"{{https://www.notion.so/2a3cdbb18c1c475b909a84e5615c7b74}}\\\">\\
...\"}"
    }
  ],
  "isError": false
}

Get Comments

POST /notion/notion-get-comments
Content-Type: application/json

{
  "page_id": "30702dc5-9a3b-8106-b51b-ed6d1bfeeed4"
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"results\":[{\"object\":\"comment\",\"id\":\"31502dc5-9a3b-8164-aa9c-001dfb9cb942\",\"discussion_id\":\"discussion://pageId/blockId/discussionId\",\"created_time\":\"2026-02-28T20:00:00.000Z\",\"last_edited_time\":\"2026-02-28T20:00:00.000Z\",\"created_by\":{\"object\":\"user\",\"id\":\"237d872b-594c-81d6-b88e-000200ac4d04\"},\"rich_text\":[{\"type\":\"text\",\"text\":{\"content\":\"This looks great! Ready for review.\"},\"annotations\":{\"bold\":false,\"italic\":false,\"strikethrough\":false,\"underline\":false,\"code\":false,\"color\":\"default\"}}]}],\"has_more\":false}"
    }
  ],
  "isError": false
}

Create Comment

POST /notion/notion-create-comment
Content-Type: application/json

{
  "page_id": "f336d0bc-b841-465b-8045-024475c079dd",
  "rich_text": [
    {
      "type": "text",
      "text": {
        "content": "This looks great! Ready for review."
      }
    }
  ]
}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"result\":{\"status\":\"success\",\"id\":\"31502dc5-9a3b-8164-aa9c-001dfb9cb942\"}}"
    }
  ],
  "isError": false
}

List Teams

POST /notion/notion-get-teams
Content-Type: application/json

{}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"joinedTeams\":[],\"otherTeams\":[],\"hasMore\":false}"
    }
  ],
  "isError": false
}

List Users

POST /notion/notion-get-users
Content-Type: application/json

{}

Response:

{
  "content": [
    {
      "type": "text",
      "text": "{\"results\":[{\"type\":\"person\",\"id\":\"237d872b-594c-81d6-b88e-000200ac4d04\",\"name\":\"John Doe\",\"email\":\"[email protected]\"},{\"type\":\"bot\",\"id\":\"b638ec59-55e9-4889-8dc1-a523ff2c8677\",\"name\":\"Notion MCP\"}],\"has_more\":false}"
    }
  ],
  "isError": false
}

Code Examples

JavaScript

const response = await fetch('https://gateway.maton.ai/notion/notion-search', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': `Bearer ${process.env.MATON_API_KEY}`
  },
  body: JSON.stringify({
    query: 'meeting notes',
    query_type: 'internal'
  })
});
const data = await response.json();
console.log(data);

Python

import os
import requests

response = requests.post(
    'https://gateway.maton.ai/notion/notion-search',
    headers={
        'Authorization': f'Bearer {os.environ["MATON_API_KEY"]}',
        'Content-Type': 'application/json'
    },
    json={
        'query': 'meeting notes',
        'query_type': 'internal'
    }
)
print(response.json())

Property Types Reference

When creating or updating pages in databases:

Special naming: Properties named "id" or "url" must be prefixed with userDefined: (e.g., "userDefined:URL").

Error Handling

Troubleshooting: API Key Issues

1. Check that the MATON_API_KEY environment variable is set:

echo $MATON_API_KEY

2. Verify the API key is valid by listing connections:

python \x3C\x3C'EOF'
import urllib.request, os, json
req = urllib.request.Request('https://ctrl.maton.ai/connections')
req.add_header('Authorization', f'Bearer {os.environ["MATON_API_KEY"]}')
print(json.dumps(json.load(urllib.request.urlopen(req)), indent=2))
EOF

Troubleshooting: Invalid App Name

1. Ensure your URL path starts with notion. For example:

• Correct: https://gateway.maton.ai/notion/v1/search
• Incorrect: https://gateway.maton.ai/v1/search

Notes

• All IDs are UUIDs (with or without hyphens)
• MCP tool responses wrap content in {"content": [{"type": "text", "text": "..."}], "isError": false} format
• The text field contains JSON-stringified data that should be parsed
• Use notion-fetch to get page/database structure before creating or updating pages
• For databases, fetch first to get the data source ID (collection://... URL)

Resources

• Notion MCP Overview
• MCP Supported Tools
• Maton Community
• Maton Support