Cursor

Cursor reaches the Inbox through MCP. It sends you messages and questions and reads your answers when it checks.

MCP only · Inbox through MCP and it reads your reply when it checks

Set it up

Install Plannotator.

curl -fsSL https://plannotator.ai/install.sh | bash
Open the Inbox. It connects the agents it finds on this computer.

plannotator inbox

You should see The terminal says Connected Cursor … to the Inbox. Settings → Agents lists Cursor through MCP server.
Copy the Inbox note into Cursor’s Customize → Rules. Settings → Agents has it under Show note. Or print it:

plannotator inbox --notes cursor

You should see Cursor knows when to write to the Inbox.

Settings → Agents in the Inbox has an Add to Cursor link. Cursor asks before it adds the server.

Add this to Cursor’s MCP config.

~/.cursor/mcp.json

{ "mcpServers": { "plannotator-inbox": { "command": "plannotator", "args": ["inbox", "mcp"] } } }

Install Plannotator from PowerShell. The other steps are the same.

irm https://plannotator.ai/install.ps1 | iex

Paste this into Cursor.

Send me a test question in the Plannotator Inbox, and read my answer when I tell you I sent it.

You should see A question arrives in the Inbox. Answer it and press Send. Tell Cursor you sent it and it reads your answer.

Settings → Agents says Not found on this computer: The Inbox looks for ~/.cursor or cursor or cursor-agent on your PATH. Open Cursor once or add the server by hand.
The plannotator-inbox server fails to start: An app started from the Dock may not see your shell’s PATH. Put the full path to plannotator in the config. which plannotator prints it.
Your reply never shows up in the session on its own: Nothing can wake Cursor: it sees a reply when it reads the thread. Tell it to check the Inbox.
Cursor forgets to use the Inbox: Cursor has no global rules file, so Plannotator can’t add its note for you. Paste it into Customize → Rules.

You can run plannotator review or plannotator annotate in a terminal next to Cursor.

Ask Cursor to send you a question when it needs a decision. Answer it in the Inbox.