Integration and E2E test design principles, ROI calculation, test skeleton specification, and review criteria. Use when designing integration tests, E2E tests, or reviewing test quality.

Build your MVP following the AGENTS.md plan. Use when the user wants to start building, implement features, or says "build my MVP", "start coding", or "implement the project".

Automatically synchronize README.md with actual project components. Scans .claude directory and updates Agents, Skills, Hooks, Commands sections.

Documentation creation criteria including PRD, ADR, Design Doc, and Work Plan requirements with templates. Use when creating or reviewing technical documents, or determining which documents are required.

Language-agnostic testing principles including TDD, test quality, coverage standards, and test design patterns. Use when writing tests, designing test strategies, or reviewing test quality.

This skill should be used when developing, optimizing, testing, or submitting algorithms for The Innovation Game challenges (3-SAT, CVRP, Knapsack). Use it for algorithm development, performance...

Create or update database seed scripts for development and testing environments. Use when setting up test data, initializing development databases, creating demo environments, resetting to known...

Nix/NixOS package development, maintenance, and system configuration. Triggers: .nix, flake.nix, default.nix, nixpkgs, derivation, buildRustPackage, buildPythonPackage, NixOS modules. Covers...

This skill should be used for structured feature development with codebase understanding. Triggers on /do command. Provides a 7-phase workflow (Discovery, Exploration, Clarification, Architecture,...

Guide for implementing 1Password secrets management - CLI operations, service accounts, Developer Environments, and Kubernetes integration. Use when retrieving secrets, managing vaults,...

Language and naming conventions advisor for worldbuilding. Creates consistent naming systems, develops linguistic diversity, and ensures names and terms feel authentic to their cultures. Use when...

Expert TypeScript developer specializing in type-safe application development, advanced type systems, strict mode configuration, and modern TypeScript patterns. Use when building type-safe...

Religion, legends, and belief systems advisor for worldbuilding. Creates authentic mythologies, designs religions with internal logic, and develops the stories cultures tell themselves. Use when...

Design and improve product user onboarding (first-time user experience) to drive activation and early retention. Produces an Onboarding & Activation Pack (aha moment spec, first 30 seconds + first...

Set up a .devcontainer for VS Code with Docker, Claude Code CLI support, and configurable options. Use when the user asks to "set up devcontainer", "add docker development environment", "configure...

Expert GraphQL developer specializing in type-safe API development, schema design, resolver optimization, and federation architecture. Use when building GraphQL APIs, implementing Apollo Server,...

Coach product managers and produce a PM Coaching Pack (context-specific definition of “good PM”, evidence-based assessment, growth bets + development plan, coaching cadence + session toolkit,...

Deep cultural development advisor for worldbuilding. Creates authentic, internally consistent cultures with customs, social structures, values, taboos, and daily life. Use when developing distinct...

Model Context Protocol (MCP) tools for Capacitor mobile development. Covers device management, app deployment, log streaming, and automated testing via MCP. Use this skill when users want to...

Solana game development with Unity, React Native, and web. Extends solana-dev-skill with gaming-specific patterns including Solana.Unity-SDK, Mobile Wallet Adapter, PlaySolana/PSG1, wallet...