Why does it require designing tests during the planning phase?

Designing tests before implementation ensures that the resulting code is verifiable, follows the desired behavior specifications, and handles failures predictably from the start.

How does this skill handle edge cases?

The skill mandates an 'Undesired Behavior' section in every plan, forcing the AI to explicitly define and account for edge cases, error conditions, and boundary constraints.

When should I use the create-plan skill?

You should use it after you have completed your research and designed a solution, but before you begin the actual coding and execution phase.

What is the 'Simple over Easy' principle?

It is a core philosophy that prioritizes the fundamentally correct, maintainable solution ('simple') over the one that is merely the fastest or least effort to implement ('easy').

Robust Development Planning

Name: Robust Development Planning
Author: kasperjunge

bykasperjunge

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403

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Productivity & Workflow

Enforces a 'simple over easy' methodology to create exhaustive, first-principles implementation plans for complex software tasks.

This skill provides a rigorous framework for transitioning from solution design to execution within Claude Code. It moves beyond simple task listing by mandating deep context gathering, explicit documentation of desired and undesired behaviors, and the design of test specifications before a single line of code is written. By prioritizing long-term maintainability over quick hacks, it helps developers avoid technical debt and ensures that implementations are fundamentally sound, well-tested, and aligned with existing codebase patterns.

Key Features

01Exhaustive Behavior Specification (Desired vs. Undesired)

02Test-First Implementation Planning

03Simple Over Easy Philosophy Enforcement

04First Principles Consistency Checks

05Deep Context Verification and Codebase Analysis

06403 GitHub stars

Use Cases

01Designing new API endpoints with strict error handling and edge case requirements.

02Mapping out complex feature migrations where side effects and dependencies are a concern.

03Architecting major refactors to ensure the fundamentally right solution is chosen over temporary fixes.

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add kasperjunge/agent-resources development

For use in Claude.ai and ChatGPT

Download Skill