Advanced context engineering techniques and patterns for Claude Code, OpenCode, Cursor, Antigravity and more. Quick Start · Plugins · Github Action · Reference · Docs Context Engineering Kit A hand crafted collection of advanced context engineering techniques and patterns with minimal token footprint, focused on improving agent result quality and predictability. The marketplace is based on prompts our company's developers have used daily for a long time, supplemented by plugins from benchmarked papers and high quality projects. Key Features Simple to Use Easy to install and use without any dependencies. Contains automatically used skills and self explanatory commands. Token Efficient Carefully crafted prompts and architecture, preferring command oriented skills with sub agents over general information skills when possible, to minimize populating context with unnecessary information. Quality Focused Each plugin is focused on meaningfully improving agent results in a specific area. Granular Install only the plugins you need. Each plugin loads only its specific agents, commands, and skills, without overlap or redundant skills. Scientifically proven Plugins are based on proven techniques and patterns validated by reputable benchmarks and studies. Open Standards Skills are based on agentskills.io specification. The SDD plugin is based on the Arc42 specification standard for software development documentation. News Updates from key releases: v3.1.0: Improved Spec Driven Development plugin generated code quality by embedding DDD/SOLID rules in the developer agent and adding a dedicated code reviewer agent that applies functional and OOP best practices rules together with Muda waste analysis to reduce code complexity and duplication. v3.0.0: Added support for AMP and Hermes agents. Tech Stack plugin now automatically injects typescript best practices when agent reads or writes TypeScript files. v2.2.0: Subagent Driven Development plugin now works as a distilled version of S