Support for Language Model Tools?

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1

Does cursor currently support language model tools? Or the MCP API as they’ve built it?

I have an extension that I’d like to expose tools for.

3

Hey, thanks for the question.

Cursor doesn’t currently support the VS Code language model tools API vscode.lm.registerTool and related APIs. This has already been requested. See this thread for a detailed comparison: Missing MCP Extension API

There are two workarounds to expose tools from your extension:

  1. cursor.mcp.registerServer: a Cursor-specific extension API that lets you programmatically register an MCP server from your extension. It’s more complex than vscode.lm.registerTool since you’ll need to set up a local MCP server, but it works.

  2. Standard MCP config: you can package your tools as an MCP server that users configure via mcp.json or Cursor settings. Docs: Model Context Protocol (MCP) | Cursor Docs

I’ll pass this along to the team.