NeoLabHQ/context-engineering-kit: Hand-crafted Claude Code Skills focused on improving agent results quality. Compatible with OpenCode, Cursor, Antigravity, Gemini CLI, and others. Includes CodeRabbit open-source alternative.
NeoLab's Context Engineering Kit is a GPL-3.0 marketplace of plugins for Claude Code, in the agentskills.io format and installable in Gemini CLI, Cursor, Codex, OpenCode, Antigravity and others, built from prompts the company's own developers have used daily. Each plugin packages a working method as commands, agents and skills: Reflexion for reflection and critique, code and pull-request review by several specialised agents (pitched as an open-source alternative to CodeRabbit), test-driven, subagent-driven and spec-driven development, a First Principles Framework, Kaizen and more. Its claims that the plugins are "Scientifically proven" and that one produces working code "in 99% of cases" are the README's own, not benchmark results.
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