Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).

Process and manipulate images using ImageMagick. Supports resizing, format conversion, batch processing, and retrieving image metadata. Use when working with images, creating thumbnails, resizing wallpapers, or performing batch image operations.

Use when tasks involve creating, editing, analyzing, or formatting spreadsheets (`.xlsx`, `.csv`, `.tsv`) using Python (`openpyxl`, `pandas`), especially when formulas, references, and formatting need to be preserved and verified.

Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.

React Native and Expo best practices for building performant mobile apps. Use when building React Native components, optimizing list performance, implementing animations, or working with native modules. Triggers on tasks involving React Native, Expo, mobile performance, or native platform APIs.

Comprehensive Python client library for InfluxDB 2.x with sync/async APIs for writing, querying, and managing time series data.

Google Shopping Merchant Conversions API client library for managing conversion sources and tracking.

Library to work against complex domain names, subdomains and URIs

A lightning-fast frontend build tool designed to leverage JavaScript's native ESM system for unbundled development with instant browser updates.

A small polyfill for Object.setPrototypeOf with cross-platform compatibility

A simple tool to find an open port on the current machine

The next-gen flux-based test runner for Jest that provides test framework globals and event-driven test execution