# Plugin MCP (Notion) enabled in Settings but Agent cannot access tools until MCP list is toggled

**URL:** <https://forum.cursor.com/t/plugin-mcp-notion-enabled-in-settings-but-agent-cannot-access-tools-until-mcp-list-is-toggled/162637>\
**Category:** Bug Reports\
**Tags:** plugins, mcp\
**Created:** [June 7, 2026, 10:48am UTC](https://forum.cursor.com/t/plugin-mcp-notion-enabled-in-settings-but-agent-cannot-access-tools-until-mcp-list-is-toggled/162637 "2026-06-07T10:48:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Kado](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/kado/32/110917_2.png) [@Kado](https://forum.cursor.com/u/Kado)\
**Post date:** [June 7, 2026, 10:48am UTC](https://forum.cursor.com/t/plugin-mcp-notion-enabled-in-settings-but-agent-cannot-access-tools-until-mcp-list-is-toggled/162637/1 "2026-06-07T10:48:13Z")

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### Where does the bug appear (feature/product)?

Cursor IDE

### Describe the Bug

Notion plugin MCP shows as enabled in Settings → Tools & MCP → Plugin MCP Servers (notion — 14 tools, 2 resources enabled), but Agent sessions frequently cannot call Notion MCP tools. The agent reports “MCP server does not exist: notion”. Before opening MCP settings or toggling the server, ~/.cursor/projects//mcps/ lacks plugin-notion-workspace-notion/tools/\*.json. After toggling, tools appear and notion-fetch works.

### Steps to Reproduce

1. Install Notion plugin, enable at project level (.cursor/settings.json: notion-workspace enabled).
2. Confirm Settings shows notion ON with 14 tools.
3. Start new Agent chat, ask to fetch Notion page via notion-fetch.
4. Observe: MCP server does not exist.
5. Open Settings → Tools & MCP or toggle notion off/on.
6. Retry: notion-fetch works; mcps/plugin-notion-workspace-notion/tools/ now exists.

### Expected Behavior

When Plugin MCP shows connected with tools enabled, every new Agent session should immediately have access to those tools without manual toggle or opening MCP settings.

### Operating System

MacOS

### Version Information

Cursor 3.6.31  
macOS Darwin 25.5.0 (arm64)

### Additional Information

Same class of bug as existing reports about MCP tool descriptor files not being written on initial connection (race condition). Workaround: toggle Plugin MCP off/on or open MCP settings before each Agent session.

### Does this stop you from using Cursor

Sometimes - I can sometimes use Cursor

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<div class="post-metadata">

**Author:** ![deanrie](https://sea3.discourse-cdn.com/cursor1/user_avatar/forum.cursor.com/deanrie/32/1263_2.png) [@deanrie](https://forum.cursor.com/u/deanrie)\
**Post date:** [June 7, 2026, 11:02am UTC](https://forum.cursor.com/t/plugin-mcp-notion-enabled-in-settings-but-agent-cannot-access-tools-until-mcp-list-is-toggled/162637/5 "2026-06-07T11:02:57Z")

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Hey, thanks for the detailed report with a repro and the path in `~/.cursor/projects/<project>/mcps/`, that really helps.

This is a known bug. It’s a race condition in the MCP snapshot pipeline. Settings shows “14 tools enabled” from one cache, but the Agent builds the tools list from another source, a durable snapshot, which sometimes hasn’t been written yet when the session starts. That’s why you see “MCP server does not exist: notion”. Toggling off and on, or opening MCP settings, forces the snapshot to be written and fixes the race, so your workaround works.

The same symptom has already been reported here: [MCP tools only available to Agent after manually toggling server off/on (even when already enabled)](https://forum.cursor.com/t/-/152859)

We’re tracking this on our side, but I can’t share an exact fix timeline yet. For now, the toggle or opening MCP settings before starting a session is the most reliable workaround. When there’s an update, I’ll reply in the thread.