What is calendly-mcp-server CLAUDE.md?

Development instructions for an MCP server that connects AI tools to Calendly, a service for scheduling meetings and appointments.

Building the TypeScript project, running it in development or production, testing its scheduling and API tools, and handling Calendly authentication.

It records the commands, project structure, coding rules, and testing methods needed to change the server safely.

How meAmitPatil/calendly-mcp-server configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to meAmitPatil/calendly-mcp-server. 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/meAmitPatil/calendly-mcp-server/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/meAmitPatil/calendly-mcp-server

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/meamitpatil/calendly-mcp-server/claude-md/github.svg)](https://agentmods.dev/instructions/meamitpatil/calendly-mcp-server/claude-md)

Your own site

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

Per session 1,448 This file is loaded in full into every session.

When invoked 1,448 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	$0.01448	$0.01448
Opus 5	$0.00724	$0.00724
Sonnet 5	$0.00290	$0.00290
Haiku 4.5	$0.00145	$0.00145

Measured 9d ago against content hash 363bc16da8c4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

calendly-mcp-server 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 9d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

calendly-mcp-server AGENTS.md — 100% identical, 0 lines differ

CLAUDE.md · 150 lines

How it starts

The opening of the file, as written. The whole thing — 150 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Calendly MCP Server

Common Commands

npm run build: Build TypeScript to JavaScript
npm run dev: Run in development mode with tsx
npm start: Run the built server
npm install: Install dependencies

Testing the Server

Use MCP Inspector: npx @modelcontextprotocol/inspector node dist/index.js
Test with Claude Desktop: Add to config file
Direct testing: node dist/index.js (requires MCP client)

Project Structure

src/
├── index.ts                    # Main MCP server entry point
├── types.ts                    # TypeScript interfaces and types
├── calendly-client.ts          # Calendly API client class
└── tools/
    ├── oauth-tools.ts          # OAuth authentication tools
    ├── api-tools.ts            # Calendly API tools
    ├── scheduling-tools.ts     # Scheduling API tools
    └── tool-definitions.ts     # MCP tool schema definitions

Code Style

Use ES modules (import/export), not CommonJS
Use TypeScript with strict type checking
Use as const for literal types in MCP responses
Destructure imports when possible
Keep tool classes focused on single responsibility

Environment Variables

Calendly API (Required)

CALENDLY_API_KEY: Personal Access Token (for simple auth)
CALENDLY_CLIENT_ID + CALENDLY_CLIENT_SECRET: OAuth credentials
CALENDLY_ACCESS_TOKEN + CALENDLY_REFRESH_TOKEN: OAuth tokens

Calendly Optional (Recommended)

CALENDLY_USER_URI: User URI for automatic defaults (e.g., https://api.calendly.com/users/your_user_id)
CALENDLY_ORGANIZATION_URI: Organization URI for automatic defaults

Development Workflow

Make changes to TypeScript files in src/
Run npm run build to compile
Test with MCP Inspector or Claude Desktop
IMPORTANT: Always test authentication before committing
Run npm run build again if there are TypeScript errors
Use conventional commit messages (see Git Guidelines below)

Git Guidelines (Conventional Commits)

Use this format: <type>[optional scope]: <description>

Read the full file on GitHub · 150 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.

9d ago First seen · 150 lines · 1,448 tokens per session scan A 363bc16da8c4

Subscribe to this mod's changes

calendly-mcp-server CLAUDE.md is an instructions file published in the GitHub repository meAmitPatil/calendly-mcp-server (9 stars, last pushed 10mo ago), licensed MIT. It adds 1,448 tokens to every session, about $0.0072 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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calendly-mcp-server: Instructions file for Claude Code