effective-design

Build functional prototypes from PRDs or specifications. Creates working UI screens with stubbed dependencies (database, APIs) and precanned mock data. Generates docs/next-steps.md explaining how to replace stubs with real integrations. Use when user provides a PRD, spec, or feature description and wants a clickable prototype to demonstrate user stories. Trigger when user mentions: build a prototype, make a demo, implement this PRD, create a mockup, prototype this spec, make it clickable, or build from this spec. This skill creates working UI with mock data and stubbed integrations—ideal for validating flows before full implementation.

Design MVPs for web, mobile, and SaaS applications through adaptive interviews that achieve buildable clarity. Use when a user wants to define, scope, or document an application idea, or when they mention MVP, product requirements, PRD, app idea, or need help turning a concept into something implementable.

Capture lessons from conversation after Claude made mistakes or needed correction. Trigger phrases include "reflect", "review our mistakes", "review what went wrong", "learn from this", "capture this lesson", "remember this for next time", or any request to analyze and persist corrections from the current conversation. Analyzes the conversation to extract what went wrong, how it was resolved, and actionable guidance for future sessions. Writes lessons to ~/.claude/lessons/ and updates ~/.claude/CLAUDE.md with triggers.