claudeindex
Plugin

prompt-eng-toolkit

Two skills (prompt-create, prompt-optimize) for engineering production single-turn LLM system prompts. Multi-provider (Gemini 3 / Claude 4.5+ / GPT-5) doc consensus, iterative API testing with theory-only fallback, before/after token comparison, built-in injection-defense fixtures.

Installation

1

Add the marketplace

/plugin marketplace add RxChi1d/prompt-eng-toolkit
2

Install plugins

/plugin

Run these commands in Claude Code to add this plugin to your environment. The marketplace must be added before you can install its plugins.

Repository & Links

Plugin Source

View Plugin Code

GitHub Repository

RxChi1d/prompt-eng-toolkit

Details & Metadata