Notion Known Pitfalls

Overview

The twelve most common mistakes when building Notion API integrations, each with the wrong pattern, why it fails, and the correct fix using real Client from @notionhq/client code. These pitfalls account for the majority of developer support questions. Covers page ID format issues, rich text structure, missing block children, pagination requirements, rate limit sharing, and integration sharing.

Prerequisites

• @notionhq/client v2.x installed (npm install @notionhq/client)
• Python: notion-client installed (pip install notion-client)
• NOTION_TOKEN environment variable set
• Familiarity with Notion API concepts (databases, pages, blocks, properties)

Instructions

Step 1: Not Sharing Pages with the Integration (Pitfall #1)

The single most common Notion API error. Every page/database must be explicitly shared with your integration.