Google Calendar for your AI agent

Give Claude Code, Cursor, Codex or your own agent Google Calendar through one MCP URL and one key. Your team signs in to Google Calendar once and the agent never holds a token. Reads run at once; anything that changes Google Calendar waits for your approval.

Get your key Read the docs

47: Google Calendar actions your agent gets as tools
1 URL: one endpoint, one key per agent
60/min: calls per key, hard caps on top
0: Google Calendar credentials inside your agent

Actions

What your agent can do in Google Calendar

A sample of the 47 actions. Your agent sees the full list with tools/list.

Reads · run at once

Get ACL Rule
List ACL Rules
Get Single Calendar by ID
Get Color Definitions
Get Event
Get Event Instances
List Events
List Events from All Calendars

Writes · wait for your approval

Delete ACL Rule
Create ACL Rule
Patch ACL Rule
Update ACL Rule
Watch ACL Changes
Batch Events
Remove Calendar from List
Insert Calendar into List

Quickstart

Connect Google Calendar to your agent in two minutes

Create your account and connect Google Calendar with its normal sign-in page.
Open Developers and create an agent key (you can limit it to Google Calendar).
Add the server to your client:

Claude Code · Terminal

claude mcp add --transport http vellarin https://hub.vellarin.ai/api/hub/mcp --header "Authorization: Bearer <key>"

Cursor · ~/.cursor/mcp.json (or .cursor/mcp.json in a project)

{
  "mcpServers": {
    "vellarin": {
      "url": "https://hub.vellarin.ai/api/hub/mcp",
      "headers": {
        "Authorization": "Bearer ${env:VELLARIN_HUB_KEY}"
      }
    }
  }
}

Codex · ~/.codex/config.toml

[mcp_servers.vellarin]
url = "https://hub.vellarin.ai/api/hub/mcp"
bearer_token_env_var = "VELLARIN_HUB_KEY"

Questions

Google Calendar and AI agents

How do I connect Google Calendar to Claude Code, Cursor or Codex?

Create a free Vellarin account, connect Google Calendar with its normal sign-in, create an agent key on the Developers page and add the Vellarin Hub MCP server to your client with one line. Your agent then sees the Google Calendar actions as tools.

Can my agent change things in Google Calendar without asking me?

No. Read actions run at once. Any action that sends, creates, changes or deletes something in Google Calendar waits for the workspace owner's approval and then runs exactly once.

Does my agent get my Google Calendar password or token?

No. The sign-in lives on the server side. Your agent holds only a Vellarin Hub key, which you can scope to Google Calendar alone, cap per day and per month, and revoke at any moment.

What does it cost?

Hub Free includes 500 app calls a month and 1 agent key, with no card. Over the cap the answer is "upgrade or wait", never a charge.