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VS Code supports remote MCP servers in Copilot agent mode (VS Code 1.102 or later).

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Prerequisites

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Connect

1

Add the server

From the terminal:
Or add it to .vscode/mcp.json in your workspace:
.vscode/mcp.json
You can also run MCP: Add Server from the command palette and choose HTTP.
2

Authorize access

Start the server from the play button in mcp.json or via MCP: List Servers. VS Code prompts you to authorize — the browser opens for Langmail sign-in and consent.
3

Verify

Open the Chat view in agent mode and check the tools menu: the Langmail tools are listed under langmail.

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Test it

Ask the agent:
Prompt
It calls list_calendars and returns your calendars with their CalDAV URLs.

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Ending access

Remove the langmail entry from mcp.json (or via MCP: List Servers). Removing it discards its tokens; without the refresh token, access lapses when the current access token expires.

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Next steps

Search and triage email

Real prompts and the tool calls they produce.

How authorization works

What happens between “add server” and “connected”.