Claude Code skills for advanced context engineering techniques and patterns

Advanced context engineering techniques and patterns for Claude Code, OpenCode, Cursor, Antigravity and more are collected in NeoLabHQ/context-engineering-kit, a hand-crafted marketplace designed with a minimal token footprint and a focus on improving agent result quality and predictability. The collection is based on prompts that the developers' company uses daily, supplemented by plugins derived from benchmarked papers and high-quality projects.

The marketplace emphasizes ease of use: plugins install without dependencies and come with automatically used skills and self-explanatory commands. It is token-efficient, preferring command-oriented skills with sub-agents over general information skills to keep unnecessary information out of context. Plugins are quality-focused and granular: each loads only the agents, commands, and skills needed for its area, with no overlap. Techniques are described as scientifically proven, built on the agentskills.io specification; the Spec-Driven Development (SDD) plugin additionally follows the Arc42 software documentation standard.

Version updates include: v3.1.0 improved SDD code quality by embedding DDD/SOLID rules into the developer agent and adding a code-reviewer agent that applies functional/OOP best-practice rules and Muda waste analysis to reduce complexity and duplication; v3.0.0 added support for AMP and Hermes agents and made the Tech Stack plugin automatically inject TypeScript best practices when the agent reads or writes TypeScript files; v2.2.0 introduced a distilled SDD plugin using meta-judge and judge sub-agents to generate specifications on the fly in parallel, and the DDD plugin began injecting Clean Architecture/DDD/SOLID/FP rules during code writing; v2.1.0 added high-level code quality guidelines from the DDD plugin to SDD agents; and v2.0.0 rewrote SDD from scratch, now producing working code in 99% of production cases.

Quick start: in Claude Code, add the marketplace with `/plugin marketplace add NeoLabHQ/context-engineering-kit` — plugins become installable without loading any agents or skills into context. Then install a single plugin, e.g. `/plugin install reflexion@NeoLabHQ/context-engineering-kit`, and only that plugin's agents, commands, and skills are loaded.