Notion AI can answer questions based on content from your workspace, but only if you configure the correct knowledge sources. Without this setup, the AI may give generic answers or claim it cannot find the information you need. This article explains how to select and manage the pages, databases, and documents that Notion AI uses to generate responses. By following these steps, you will control which content the AI can reference and improve the accuracy of its answers.
Key Takeaways: Configuring Notion AI Knowledge Sources
- Settings & Members > AI & data > Knowledge sources: Add or remove the specific pages and databases the AI can read.
- AI toggle in page header: Enable the AI assistant for a particular page to include it as a knowledge source.
- Knowledge source status icon: A green checkmark means the source is active; a gray icon means it is disabled or not indexed.
What Are Notion AI Knowledge Sources
Notion AI knowledge sources are the pages, databases, and documents that the AI can search when you ask a question. When you enable a knowledge source, Notion indexes the content of that page or database so the AI can retrieve relevant information. Without this configuration, the AI relies only on the context of the current page or on general knowledge, which often leads to incomplete answers.
You must have a Notion AI subscription to use knowledge sources. The feature is available on all paid Notion plans that include AI. Workspace owners and admins can manage knowledge sources for the entire workspace, while members can configure personal sources for their own pages.
How Indexing Works
When you add a knowledge source, Notion indexes the text content of that page or database. Indexing happens automatically after you enable the source. The AI then searches the indexed content when you ask a question. If you update the content later, Notion reindexes it periodically. The indexing process usually takes a few seconds to a few minutes depending on the size of the content.
Types of Content You Can Use
You can add individual pages, entire databases, or specific views as knowledge sources. Pages include text, headings, and inline databases. Databases include all entries and their properties. You cannot add individual blocks or images as separate sources. Only text content is indexed.
Steps to Configure Notion AI Knowledge Sources
- Open Settings & Members
Click the Settings & Members option in the left sidebar. If you do not see it, click the workspace icon at the top left and select Settings & Members from the menu. - Go to AI & Data
In the left panel of the Settings window, click AI & data. This section contains all AI-related settings, including knowledge sources. - Select Knowledge Sources
Under the AI & data section, click Knowledge sources. You will see a list of currently enabled sources and an option to add new ones. - Add a New Knowledge Source
Click the Add source button. A dialog opens where you can search for a page or database by name. Type the name of the content you want to add and select it from the results. - Choose the Scope
After selecting the page or database, choose whether to include all subpages or only the selected page. For databases, you can choose to include all entries or only the current view. Click Confirm to add the source. - Verify the Source Status
Back in the Knowledge sources list, check the status icon next to the source. A green checkmark with the label Indexed means the content is ready. A gray icon with the label Not indexed means the source is not yet processed or is disabled. - Test the Configuration
Open any page in the workspace and ask Notion AI a question related to the content you added. The AI should now be able to answer based on that knowledge source.
Managing and Removing Knowledge Sources
- Open Knowledge Sources List
Go to Settings & Members > AI & data > Knowledge sources. - Disable a Source Temporarily
Click the toggle switch next to a source to disable it. The AI will stop using that content until you enable it again. - Remove a Source Permanently
Click the three-dot menu next to a source and select Remove. The source is deleted from the list and the AI will no longer index it. - Reorder Sources
Drag the handle icon next to a source to change its priority. The AI searches sources in the order they appear. Place the most important sources at the top.
Things to Avoid When Configuring Knowledge Sources
Adding Too Many Sources at Once
If you add dozens of pages or databases at the same time, indexing may take longer. The AI might also return less relevant results because it has to search through too much content. Add sources gradually and test the AI responses after each addition.
Including Duplicate Content
Adding the same page or database multiple times does not improve accuracy. It only wastes indexing capacity and may cause the AI to return repeated information. Check the list regularly for duplicates and remove them.
Using Pages with Heavy Formatting
Notion AI indexes plain text from pages. Complex formatting like nested databases, embedded files, or code blocks may not be fully indexed. For best results, keep the content structure simple and ensure the key information is in plain text or headings.
Forgetting to Update Sources After Content Changes
Notion reindexes knowledge sources periodically, but not immediately. If you make significant changes to a page, the AI may still use the old content for a few hours. To force a reindex, remove the source and add it again.
Notion AI Knowledge Sources: Single Page vs Database vs Workspace
| Item | Single Page | Database | Workspace |
|---|---|---|---|
| Scope | One page and its subpages | All entries in a database | All pages and databases in the workspace |
| Setup location | Settings > AI & data > Knowledge sources | Settings > AI & data > Knowledge sources | Not available as a single source; must add individual sources |
| Indexing time | Seconds to minutes | Minutes to hours for large databases | Not applicable |
| Best use case | Specific project documentation | Product catalogs, employee directories | Not recommended; use selective sources for better accuracy |
There is no single toggle to add the entire workspace as a knowledge source. You must add each page or database individually. This gives you fine-grained control over what the AI can access.
You can now configure Notion AI to answer questions using the specific pages and databases you choose. Start by adding your most important documents first. Test the AI responses after each addition to verify the accuracy. For advanced control, use the priority order to make critical sources appear first in search results.