prompt-lab

What problem does it solve?

Replaces trial-and-error prompt iteration with a repeatable methodology that analyzes existing prompts for failure modes, generates focused variants, and produces evaluation rubrics and test suites to reliably compare prompt performance and enforce output formats.

Core Features & Use Cases

• Prompt analysis: Identify ambiguities, missing constraints, and map prompts to known failure modes to guide targeted fixes.
• Variant generation: Produce direct, few-shot, chain-of-thought, persona, and structured-output variants where each variant changes a single variable with hypothesis and risk notes.
• Evaluation & testing: Design weighted rubrics, minimum five-case test suites (happy path, edge, adversarial, boundary), and format-enforcement strategies for A/B comparison across models.
• Use case: Run prompt-lab to generate 3-4 variants and a 5-case evaluation suite to select the highest-scoring prompt for classifying support tickets or summarizing technical documents.

Quick Start

Use prompt-lab to generate two few-shot and one structured-output prompt variant plus a five-case test suite and a weighted rubric for classifying customer support tickets.