What is google-calendar-mcp CLAUDE.md?

A set of instructions for Claude Code working on a Google Calendar MCP server. It documents the project’s commands, authentication setup, transports, and testing options.

Use it when developing or testing this TypeScript calendar server, including unit, integration, lint, and build tasks.

It gives the coding agent the repository-specific rules needed to build, check, and test changes correctly.

How 84emllc/google-calendar-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to 84emllc/google-calendar-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/84emllc/google-calendar-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/84emllc/google-calendar-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/84emllc/google-calendar-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/84emllc/google-calendar-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/84emllc/google-calendar-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/84emllc/google-calendar-mcp/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/84emllc/google-calendar-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/84emllc/google-calendar-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,140 This file is loaded in full into every session.

When invoked 2,140 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.02140	$0.02140
Opus 5	$0.01070	$0.01070
Sonnet 5	$0.00428	$0.00428
Haiku 4.5	$0.00214	$0.00214

Measured 8d ago against content hash 1557dbf18b2d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

google-calendar-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 235 lines

How it starts

The opening of the file, as written. The whole thing — 235 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Overview

Google Calendar MCP Server - A Model Context Protocol (MCP) server providing Google Calendar integration for AI assistants. Built with TypeScript, supports both stdio and HTTP transports, with OAuth 2.0 authentication.

Development Commands

npm install              # Install dependencies
npm run build            # Build with esbuild (outputs to build/)
npm run dev              # Show interactive development menu with all commands
npm run lint             # TypeScript type checking (no emit)

# Testing - Quick Start
npm test                             # Unit tests only (no auth required)
npm run test:watch                   # Unit tests in watch mode
npm run dev test:integration:direct  # Direct integration tests (recommended for dev)
npm run dev coverage                 # Generate test coverage report

# Testing - Full Suite (rarely needed, incurs LLM usage costs)
npm run dev test:integration:claude  # Claude + MCP integration (requires CLAUDE_API_KEY)
npm run dev test:integration:openai  # OpenAI + MCP integration (requires OPENAI_API_KEY)
npm run dev test:integration:all     # All integration tests (requires all API keys)

# Authentication
npm run auth                # Authenticate main account
npm run dev auth:test       # Authenticate test account (for integration tests)
npm run dev account:status  # Check authentication status

# Running the server
npm start                        # Start with stdio transport
npm run dev http                 # Start HTTP server on localhost:3000
npm run dev http:public          # HTTP server accessible from any host

Architecture

Handler Architecture

All MCP tools follow a consistent handler pattern:

Handler Registration: Handlers are auto-registered via src/tools/registry.ts
Base Class: All handlers extend BaseToolHandler from src/handlers/core/BaseToolHandler.ts
Schema Definition: Input schemas defined in src/tools/registry.ts using Zod
Handler Implementation: Core logic in src/handlers/core/ directory

Read the full file on GitHub · 235 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

8d ago First seen · 235 lines · 2,140 tokens per session scan A 1557dbf18b2d

Subscribe to this mod's changes

google-calendar-mcp CLAUDE.md is an instructions file published in the GitHub repository 84emllc/google-calendar-mcp (0 stars, last pushed 3mo ago), licensed MIT. It adds 2,140 tokens to every session, about $0.0107 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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google-calendar-mcp: Instructions file for Claude Code