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Google Calendar MCP Server

MCP Server

Integrate Claude with Google Calendar events

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Updated Aug 31, 2025

About

A Node.js MCP server that lets Claude list, create, update, and delete Google Calendar events via OAuth 2.0 authentication.

Capabilities

Resources
Access data sources
Tools
Execute functions
Prompts
Pre-built templates
Sampling
AI model interactions

Google Calendar MCP in Action

The Google Calendar MCP server bridges the gap between conversational AI assistants and one of the most widely used productivity tools: Google Calendar. By exposing a concise set of event‑manipulation operations—listing, creating, updating, and deleting events—the server enables Claude Desktop to perform calendar tasks directly from a natural‑language conversation. This eliminates the need for users to switch between interfaces or remember specific API calls, allowing them to manage appointments with the same ease they manage other tasks.

For developers building AI‑powered workflows, this server provides a clean abstraction layer. Instead of embedding OAuth flows or handling pagination manually, the MCP protocol takes care of authentication and data serialization. The server communicates over a lightweight JSON‑based schema that Claude can interpret without additional parsing logic, making it straightforward to add calendar support to existing or new projects. The integration is completely transparent: once the MCP server is running, Claude automatically discovers its capabilities and can invoke them through simple prompts like “Add a meeting to my calendar at 3 pm tomorrow.”

Key capabilities include:

  • Event listing: Retrieve upcoming or past events filtered by time range, providing context for scheduling decisions.
  • Event creation: Generate new calendar entries from natural language inputs, automatically resolving dates, times, and attendees.
  • Event updating: Modify existing events’ details such as title, time, or location without leaving the chat.
  • Event deletion: Remove entries cleanly, with confirmation prompts to prevent accidental loss.

Real‑world scenarios benefit from this tight integration: a sales rep can ask Claude to schedule a follow‑up meeting after a client call; an event planner can let the assistant automatically update venue details across all relevant events; or a team lead can request a summary of upcoming deadlines and adjust dates on the fly. In each case, the MCP server turns conversational intent into concrete calendar actions, saving time and reducing cognitive load.

What sets this implementation apart is its focus on developer ergonomics. By leveraging the existing MCP ecosystem, it requires no custom SDKs or wrapper libraries; developers simply run a single command and update a configuration file in Claude Desktop. The server’s reliance on OAuth for Google authentication ensures secure, user‑consented access while the MCP protocol guarantees that data flows are consistent and predictable. This combination of simplicity, security, and extensibility makes the Google Calendar MCP server a compelling addition to any AI‑augmented productivity stack.