To configure Notion AI’s knowledge sources, first decide whether you want to work with a particular page, search your workspace, or connect another app. These use different controls. You do not need to register every ordinary workspace page in a separate knowledge-source list.
Start small: choose one document you can already open, ask a question with a known answer, and inspect the cited evidence before adding more sources.
1. Choose the AI feature you need
Use personal Notion Agent for working with page context, Enterprise Search for finding information, and an AI Connector when the information lives in another supported service. Custom Agents are a separate setup with their own permissions.
Notion currently includes AI on Business and Enterprise plans; Free and Plus offer limited complimentary responses. Usage allowances can temporarily pause features. If a feature is unavailable, check the displayed plan or usage message before treating it as a source-access problem. See the Notion AI FAQ.
2. Give your personal Agent useful context
Open the relevant page before starting an Agent chat. The current page supplies context; selected blocks narrow that focus. Use an @ reference to add another page or person, or the chat’s source selector for additional sources. Agent also supports file attachments, including PDFs and CSVs. These are documented in the personal Agent guide.
For example, ask: “Explain the approval steps in this project brief. List anything the brief leaves undecided. Reply in chat; do not edit the page.” This keeps your test about evidence retrieval, not a request to reorganize the workspace. Check the actual response rather than assuming a successful-looking summary is accurate.
3. Set the scope of Enterprise Search
In Home, use the search window and open All sources. Choose the workspace or connected app you need. For workspace searches, hovering over its name lets you select a page or teamspace. Turn off Web search for an internal-only question. Notion’s Enterprise Search guide documents these controls.
Inspect the answer’s citations. Does each reference identify the intended document and support the specific claim? If two documents disagree, ask the owner which is authoritative instead of relying on their order in a list. Do not infer a source-priority algorithm from the way items appear in the interface.
4. Add external sources only when needed
For a supported external app, use Settings → Notion AI and the app’s connector controls. Workspace connectors require appropriate Notion and source-app administration; check the app-specific instructions and plan requirements first. The connector overview links to those instructions.
Before authorizing anything, write down which information is needed, who should be able to use it, and who owns the connection. Avoid adding unrelated services as a troubleshooting experiment. Record the setup time and any reported connection error so a source owner can distinguish incomplete ingestion from missing authorization. Do not repeatedly disconnect and reconnect to try to force an index refresh.
5. Keep sources accurate and access intentional
Maintain the authoritative documents themselves: identify an owner, mark obsolete guidance clearly, and record approval dates where they matter. A tidy source list cannot resolve contradictory instructions inside the documents.
Your personal Agent follows your access permissions. If you cannot open a needed page, ask its owner to check the intended access; do not publish it or grant workspace-wide access merely to make an AI answer appear. For a shared Custom Agent, review its separate resource and sharing permissions.
After changing a source, repeat the same small question and verify the evidence again. Keep a short record of the source, expected answer, actual answer and date. This provides a useful maintenance check without moving pages, duplicating databases or assuming a guaranteed indexing time.
Official documentation checked October 14, 2026.