Notion outage on October 22, 2026: Notion MCP query_data_source tool is temporarily unavailable in Claude clients
Notion reported an incident affecting Notion for 1 hour 19 minutes on 22 October 2026, from 03:23 to 04:42 UTC.
Resolved
Official incident reported by Notion
- Started
- 03:23
- 22 Oct 2026 UTC
- Resolved
- 04:42
- 22 Oct 2026 UTC
- Duration
- 1h 19m
- 1 hour 19 minutes
- Impact
- Major
- as rated by Notion
- Updates
- 3
- posted by Notion
Timeline
All times UTC.
Official incident from Notion
Notion MCP query_data_source tool is temporarily unavailable in Claude clients
-
Official
Investigating
The Notion MCP query_data_source tool is temporarily unavailable in Claude clients.
-
Official
Investigating
The Notion MCP query_data_source tool is temporarily unavailable in Claude clients.
-
Official
Resolved
This issue has been resolved. The Notion MCP query_data_source tool is available again in Claude clients.
"Official" rows are quoted from Notion's public status page, www.notion-status.com. Very long posts are shortened.
What our checkpoints saw
HostTracker's checkpoints, which test www.notion.so from several locations, recorded no outage of 5 minutes or longer during this incident. A provider can report a problem that affects only some features, regions or accounts, which a check of the main address does not see. The live Notion status shows what our checks see right now.
Does your product depend on Notion?
An outage like this one reaches your users through your product, and most teams hear about it from a customer rather than from a dashboard. HostTracker watches any endpoint you name - your own site, an API you call, a vendor you resell - from 300+ locations, confirms a failure from several of them before it says anything, and then tells you by email, SMS, voice call or your chat tool.
You get the same record you are reading here for your own services: every outage timestamped, with the checks that observed it.
Independent measurement by HostTracker. Not affiliated with Notion. Official updates are quoted from Notion's public status page and remain Notion's own words.