Borrowing it
Nothing to install: this file belongs to QuantGeekDev/google-calendar-mcp-app. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/QuantGeekDev/google-calendar-mcp-app/main/CLAUDE.mdgit clone --depth 1 https://github.com/QuantGeekDev/google-calendar-mcp-appWrote 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.
[](https://agentmods.dev/instructions/quantgeekdev/google-calendar-mcp-app/claude-md)<a href="https://agentmods.dev/instructions/quantgeekdev/google-calendar-mcp-app/claude-md"><img src="https://agentmods.dev/badge/instructions/quantgeekdev/google-calendar-mcp-app/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.
<a href="https://agentmods.dev/instructions/quantgeekdev/google-calendar-mcp-app/claude-md"><img src="https://agentmods.dev/badge/instructions/quantgeekdev/google-calendar-mcp-app/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.02189 | $0.02189 |
| Opus 5.5 | $0.00876 | $0.00876 |
| Sonnet 5.5 | $0.00438 | $0.00438 |
| Haiku 4.5 | $0.00219 | $0.00219 |
Grade A, and why
google-calendar-mcp-app 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 1mo 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.
This is a copy
100% identical to google-calendar-mcp CLAUDE.md — 237 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 237 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
BaseToolHandlerfromsrc/handlers/core/BaseToolHandler.ts - Schema Definition: Input schemas defined in
src/tools/registry.tsusing Zod - Handler Implementation: Core logic in
src/handlers/core/directory
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.
- 1mo ago First seen · 237 lines · 2,189 tokens per session scan A 2210aea7e5bb
google-calendar-mcp-app CLAUDE.md is an instructions file published in the GitHub repository QuantGeekDev/google-calendar-mcp-app (3 stars, last pushed 7mo ago), licensed MIT. It adds 2,189 tokens to every session, about $0.0088 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to google-calendar-mcp CLAUDE.md, differing in 237 lines, and is treated as a copy.
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