outside-in-double-loop

What problem does it solve?

This Skill addresses the challenge of implementing features with multiple dependencies, especially when those dependencies don't exist yet, by guiding a structured, test-driven development process.

Core Features & Use Cases

• Incremental Implementation: Guides the development of features by starting with the user-facing contract and progressively building out underlying dependencies.
• Dependency Management: Ensures that code is only built when a test demands it, preventing premature or speculative development.
• Use Case: When building a new microservice, use this skill to define the API contract first, stub all downstream services, get the API test passing, and then iteratively build each downstream service one by one.

Quick Start

Use the outside-in-double-loop skill to implement the new user registration feature, starting with the API endpoint and stubbing all internal services.