prompt-engineering-lab@3.0.3

Publisher claims: "Scope: prompt drafting, diagnosis, A/B test design, versioning and go-live checklists; it does not call model APIs, run evaluations, or write files. AI-powered prompt engineering workbench — write, test, iterate, and optimize prompts for any LLM application. Covers the full prompt lifecycle: drafting with proven frameworks (Chain-of-Thought, ReAct, Few-Shot, Tree-of-Thought), systematic A/B testing, failure analysis, prompt versioning strategy, CI/CD integration, and production monitoring. Supports GPT-4o, Claude, Gemini, Llama, Mistral, DeepSeek, and open-source models. Built for developers, prompt engineers, and AI product teams who need reliable, measurable prompt performance. Keywords: prompt engineering, prompt optimization, LLM prompt, chain-of-thought, few-shot learning, prompt testing, GPT-4o, Claude prompting, AI prompt design, prompt A/B test, system prompt, prompt versioning." Observed in sandbox: no network, touches nothing outside the project, writes no memory.