prompt-lab

Systematic prompt engineering: analyzes existing prompts for failure modes, generates structured variants (direct, few-shot, chain-of-thought), designs evaluation rubrics with weighted criteria, and produces test case suites for comparing prompt performance. Triggers on: "improve this prompt", "prompt engineering", "prompt lab", "generate prompt variants", "A/B test prompts", "evaluate this prompt", "prompt failure modes", "optimize prompt", "write a better prompt", "prompt design", "prompt iteration", "few-shot examples". Use this skill when designing, improving, or evaluating LLM prompts.