Browse and install thousands of AI Agent skills in the Killer-Skills directory. Supports Claude Code, Windsurf, Cursor, and more.
Multi-platform content distribution across X, LinkedIn, Threads, and Bluesky. Adapts content per platform using content-engine patterns. Never posts identical content cross-platform. Use when the user wants to distribute content across social platforms.
Deep research is a skill that produces thorough, cited research reports from multiple web sources using firecrawl and exa MCP tools.
Django testing strategies with pytest-django, TDD methodology, factory_boy, mocking, coverage, and testing Django REST Framework APIs.
Idiomatic Kotlin patterns, best practices, and conventions for building robust, efficient, and maintainable Kotlin applications with coroutines, null safety, and DSL builders.
# Product Lens — Think Before You Build ## When to Use - Before starting any feature — validate the "why" - Weekly product review — are we building the right thing? - When stuck choosing between features - Before a launch — sanity check the user journey - When converting a vague idea into a spec ## How It Works ### Mode 1: Product Diagnostic Like YC office hours but automated. Asks the hard questions: ``` 1. Who is this for? (specific person, not "developers") 2. What's the pain? (quantify
Spring Security best practices for authn/authz, validation, CSRF, secrets, headers, rate limiting, and dependency security in Java Spring Boot services.
springboot-tdd is a test-driven development workflow for Spring Boot services using JUnit 5, Mockito, MockMvc, Testcontainers, and JaCoCo.
swift-concurrency-6-2 is a skill that enables Approachable Concurrency in Swift 6.2, providing a safe and efficient way to handle concurrency in iOS and macOS app development.
swift-protocol-di-testing is a skill that enables protocol-based dependency injection for testable Swift code, using focused protocols and Swift Testing.
continuous-learning-v2 is a cutting-edge AI agent skill that enables instinct-based learning, allowing developers to automate coding tasks and improve productivity.
# Design System — Generate & Audit Visual Systems ## When to Use - Starting a new project that needs a design system - Auditing an existing codebase for visual consistency - Before a redesign — understand what you have - When the UI looks "off" but you can't pinpoint why - Reviewing PRs that touch styling ## How It Works ### Mode 1: Generate Design System Analyzes your codebase and generates a cohesive design system: ``` 1. Scan CSS/Tailwind/styled-components for existing patterns 2. Extra
Visualize whether skills, rules, and agent definitions are actually followed — auto-generates scenarios at 3 prompt strictness levels, runs agents, classifies behavioral sequences, and reports compliance rates with full tool call timelines