Skill UI

Learn performance profiling principles: measurement, analysis, and optimization. Covers Core Web Vitals, profiling workflows, bundle analysis, runtime profiling, common bottlenecks, quick wins, and anti-patterns. Includes a Lighthouse audit script for automated checks.

Expert in building custom tools to solve your own problems first. Covers rapid prototyping, CLI development, local-first architecture, script automation, and the art of dogfooding. Ideal for turning personal scripts into products.

Embed Photopea in web apps via photopea.js to control image editing, file I/O, scripting, exporting, layers, text, and filters through a Photoshop-compatible API.

A comprehensive suite designed for AI agents to perform safe, deep, and multi-format web searches. It allows agents to retrieve current web information, analyze PDFs, extract YouTube transcripts, and access GitHub code files. Instructions include guidelines for varying search depths and using specialized tools for code context retrieval.

General-purpose browser automation skill using Playwright. Auto-detects local dev servers, writes custom test scripts to /tmp, and executes them with a visible browser. Supports responsive testing, login flows, form submissions, and link checking.

This skill provides expertise in writing strict POSIX-compliant shell scripts for maximum portability across Unix-like systems. It focuses on shell-agnostic scripting compatible with dash, ash, sh, and bash in POSIX mode. Key areas include defensive programming, portable error handling, safe argument parsing, and cross-platform compatibility. It ensures scripts run on Linux, BSD, Solaris, AIX, and macOS without relying on GNU-specific features or bash extensions.

A comprehensive guide for using psql, PostgreSQL's interactive terminal. Covers connection methods, security best practices, environment variables, script execution, and database object inspection commands. Essential for database administrators and developers managing PostgreSQL instances via command line.

This skill generates complete, import-ready Postman Collection v2.1 JSON files from natural language API descriptions or cURL commands. It parses headers, authentication, body, and query parameters to create structured API collections and companion environment files. Ideal for API testing and development workflows.

This skill generates Newman CLI commands, configuration files, Jenkins pipeline scripts, and shell automation for running Postman collections in CI/CD or local environments. It helps automate API testing workflows by creating reusable scripts and pipeline configurations that integrate seamlessly with development and deployment processes, ensuring consistent test execution.

This skill covers critical PowerShell Windows patterns including operator syntax rules, null checks, error handling, and file path management. It emphasizes avoiding common pitfalls like missing parentheses, Unicode characters, and type mismatches to ensure robust script execution.

A comprehensive playbook for optimizing the entire lifecycle of pull requests. It guides developers through systematic pre-flight cleanup, critical self-audits, local test verification, and structuring high-signal PR descriptions to ensure code quality and fast maintainer approval.

Create structured pull request descriptions following Sentry engineering practices. Analyzes branch diffs, generates clear what/why context, and creates draft PRs via GitHub CLI.