What is calendar-app-mcp CLAUDE.md?

Project instructions for a calendar application and its command-line and MCP server commands. MCP is a standard way for an application to provide tools that an AI agent can call.

They cover starting the calendar app, listing calendars, viewing its data schema, running tests and lint checks, installing dependencies, building the package, and publishing it.

Contributors need a shared reference for running the app, testing it, managing dependencies, and publishing releases. These instructions reduce guesswork during maintenance.

How rygwdn/calendar-app-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to rygwdn/calendar-app-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/rygwdn/calendar-app-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/rygwdn/calendar-app-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/rygwdn/calendar-app-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/rygwdn/calendar-app-mcp/claude-md)

Your own site

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

Per session 578 This file is loaded in full into every session.

When invoked 578 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	$0.00578	$0.00578
Opus 5	$0.00289	$0.00289
Sonnet 5	$0.00116	$0.00116
Haiku 4.5	$0.00058	$0.00058

Measured 10d ago against content hash 5b1b52d88a63, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

calendar-app-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 10d 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 · 45 lines

How it starts

The opening of the file, as written. The whole thing — 45 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.

Commands

Run calendar app: uv run calendar-app or uvx calendar-app
Run as MCP server: uv run calendar-app mcp, uvx calendar-app-mcp (no args needed), or uvx calendar-app-mcp mcp
List calendars: uv run calendar-app calendars or uvx calendar-app-mcp calendars
JSON schema: uv run calendar-app schema or uvx calendar-app-mcp schema
Show version: uv run calendar-app --version, uv run calendar-app version or uvx calendar-app-mcp --version
Format output: Add --json flag (default is markdown)
Run tests: uv run pytest
Run tests with linting: uv run pytest --black --ruff
Generate lock file with PyPI: UV_NO_CONFIG=1 uv lock
Install dependencies with PyPI: UV_NO_CONFIG=1 uv install
Install in development mode: UV_NO_CONFIG=1 uv pip install -e .[dev]

Publishing Process

To publish a new version to PyPI, follow these steps:

Update version number in pyproject.toml
Run tests to make sure everything works: uv run pytest --black --ruff
Build the package: UV_NO_CONFIG=1 uv run python -m build

Upload to PyPI:

UV_NO_CONFIG=1 uv run twine upload dist/calendar_app_mcp-X.Y.Z*

Replace X.Y.Z with the actual version number.

Verify installation: uvx calendar-app-mcp@latest --version
Create and push a tag: git tag vX.Y.Z && git push origin vX.Y.Z

Code Style Guidelines

Imports: Group standard library imports first, followed by third-party imports
Formatting: Use Black code formatter with 100 character line length
Linting: Use Ruff for code linting
Type Hints: Use Python type hints for function parameters where appropriate
Error Handling: Use try/except blocks with specific exceptions
Documentation: Include docstrings for all functions and classes
Naming Conventions: Use snake_case for functions and variables, PascalCase for classes
Template Rendering: Use Jinja2 for templating with proper context

Read the full file on GitHub · 45 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.

10d ago First seen · 45 lines · 578 tokens per session scan A 5b1b52d88a63

Subscribe to this mod's changes

calendar-app-mcp CLAUDE.md is an instructions file published in the GitHub repository rygwdn/calendar-app-mcp (2 stars, last pushed 1y ago), licensed MIT. It adds 578 tokens to every session, about $0.0029 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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calendar-app-mcp: Instructions file for Claude Code