notion

Use the Notion API to create/read/update pages, data sources (databases), and blocks.

Setup

1. Create an integration at https://notion.so/my-integrations
2. Copy the API key (starts with ntn_ or secret_)
3. Store it:

4. Share target pages/databases with your integration (click "..." → "Connect to" → your integration name)

API Basics

All requests need:

Note: The Notion-Version header is required. This skill uses 2025-09-03 (latest). In this version, databases are called "data sources" in the API.

Common Operations

Search for pages and data sources:

Get page:

Get page content (blocks):

Create page in a data source:

Query a data source (database):

Create a data source (database):

Update page properties:

Add blocks to page:

Property Types

Common property formats for database items:

• Title: {"title": [{"text": {"content": "..."}}]}
• Rich text: {"rich_text": [{"text": {"content": "..."}}]}
• Select: {"select": {"name": "Option"}}
• Multi-select: {"multi_select": [{"name": "A"}, {"name": "B"}]}
• Date: {"date": {"start": "2024-01-15", "end": "2024-01-16"}}
• Checkbox: {"checkbox": true}
• Number: {"number": 42}
• URL: {"url": "https://..."}
• Email: {"email": "[email protected]"}
• Relation: {"relation": [{"id": "page_id"}]}

Key Differences in 2025-09-03

• Databases → Data Sources: Use /data_sources/ endpoints for queries and retrieval
• Two IDs: Each database now has both a database_id and a data_source_id
  • Use database_id when creating pages (parent: {"database_id": "..."})
  • Use data_source_id when querying (POST /v1/data_sources/{id}/query)
• Search results: Databases return as "object": "data_source" with their data_source_id
• Parent in responses: Pages show parent.data_source_id alongside parent.database_id
• Finding the data_source_id: Search for the database, or call GET /v1/data_sources/{data_source_id}

Notes

• Page/database IDs are UUIDs (with or without dashes)
• The API cannot set database view filters — that's UI-only
• Rate limit: ~3 requests/second average
• Use is_inline: true when creating data sources to embed them in pages