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MCP Calendar in VS Code

Read .ics calendars: events, free and busy, conflicts, exports. It imports a .ics export from Google, Apple or Outlook, expands recurring series correctly across DST, lists events, computes free and busy blocks, flags overlapping events across every imported calendar, exports a selection, and turns a meeting into a time entry.

In agent mode, free_busy and conflicts are tools the agent can call mid-task, so scheduling a follow-up around what is already on the calendar is one instruction rather than a manual lookup first.

What you get in VS Code

You say	Tool
What is on my calendar next week and where am I free for two hours?	`events_list then free_busy`
Do any of my meetings clash this week?	`conflicts`
Log yesterday's Nova call as billable time.	`event_to_time_entry`

VTIMEZONE blocks in the file are ignored on purpose: every offset is computed from the ICU data inside Node from the TZID name, which is what keeps a weekly 10:00 Warsaw meeting at 10:00 local across the March clock change instead of drifting to 11:00.

Install it in VS Code

The file is .vscode/mcp.json, and the key inside it is servers.

Scope	Path
This workspace	`<workspace>/.vscode/mcp.json`
Every workspace	`the user profile mcp.json, opened by the MCP: Open User Configuration command`

// .vscode/mcp.json  (the key is "servers")
{
  "servers": {
    "calendar": {
      "command": "npx",
      "args": ["-y", "@theluckystrike/mcp-calendar"]
    }
  }
}

Or from a terminal:

code --add-mcp '{"name":"calendar","command":"npx","args":["-y","@theluckystrike/mcp-calendar"]}'

VS Code asks you to confirm you trust the server and its capabilities before it starts. Nothing runs until you answer.

The npm publish of @theluckystrike/mcp-calendar is pending; until then use the .mcpb bundle or a clone and build from the latest release.

No install: the hosted endpoint

There is no hosted endpoint for this one yet. MCP Calendar runs locally over stdio with the config above, which is also the only form in which it reads and writes files on your own disk. Three of the servers in this collection are served at https://mcp.zovo.one/mcp/<name> over MCP streamable HTTP: time-tracker, price-tracker and invoice.

VS Code notes worth knowing first

The top-level key is "servers", not "mcpServers". A config pasted from a Claude Desktop or Cursor README parses cleanly, contributes no servers, and gives you no error to read, which makes it the most expensive one-word mistake here. Alongside it an "inputs" array holds secrets. The newer Agent Host reads a workspace .mcp.json instead.

Free: 2 calendars, windows up to 31 days, exports up to 50 events. Pro is $19 once, verified offline.

Questions

Why does my mcp.json do nothing?

The key is servers, not mcpServers. A config copied from a Claude Desktop README parses cleanly and contributes nothing. Rename it. On the newer Agent Host, use a workspace .mcp.json instead.

Do I have to edit the file at all?

No. code --add-mcp takes the server object on the command line, and MCP: Add Server in the palette asks whether the target is Workspace or Global.

Where do the MCP Calendar tools show up?

In Chat, behind the tools picker, once the server has started. Adding or changing one raises a prompt asking you to confirm you trust it; if the picker is empty, that prompt is usually still waiting.

MCP Calendar in detail · The same server in Cursor and Windsurf · Every server in VS Code · Guides · VS Code docs