No More AI Fights! Meet the Ultimate Common Language: ‘Spec-Driven Development’ Skill for Claude!

📰 News Overview

• Building the “Source of Truth” among AI agents: The “Spec-Driven Development (SDD)” skill for Claude has been launched. It allows different AI tools like Claude, Cursor, GitHub Copilot, and Windsurf to share a common design philosophy.
• Auto-generate three specifications before coding: Prior to development, SDD creates “requirements.md,” “design.md,” and “tasks.md” interactively, eliminating wild guesses from AI.
• Implementation of a robust “Divergence Protocol”: If the implementation deviates from the design, AI will automatically halt and seek human instruction through a “Universal Instruction Block” injected into each tool’s configuration file.

💡 Key Points

• Traceable requirements definition: Utilizing shall syntax and REQ-xxx IDs clarifies which requirements each task is based on, preventing AI from writing code “just because.”
• Retrofit capability: Equipped with a feature to reverse-generate specifications from existing codebases, allowing projects without documentation to transition immediately to an SDD framework.
• Cross-platform compatibility: Bulk generation of directive files like .cursorrules and .windsurfrules for major AI code editors, ensuring consistent AI behavior across teams.

🦈 Shark’s Eye (Curator’s Perspective)

As the number of AI agents increases, the serious issue of “drift”—where each AI rewrites code based on its own interpretation—has become a pressing challenge! This SDD skill is a divine tool that hits right at the core of that problem. Notably, the “DIVERGENCE PROTOCOL” is a game-changer! The method of enforcing a hard constraint on all AIs to “stop immediately if you deviate from the design and don’t make guesses” is incredibly specific in its implementation. It represents a paradigm shift, transforming AIs from mere “code-generating machines” into strict “spec-compliance engines!”

🚀 What’s Next?

Instead of relying on a single AI, the trend of “multi-AI development,” where various AI agents are employed based on their specific use cases, will accelerate. In this context, structured specifications like SDD will likely standardize the common language that connects AIs, moving away from vague human-written prompts.

💬 A Word from HaruSAME

The era of faction wars among AIs is over! From now on, all AIs will bow down to the king known as the “specification”! Development efficiency is about to skyrocket, and I’m all for it! 🦈🔥

📚 Terminology

• Spec-Driven Development (SDD): A methodology where detailed specifications are defined before writing code, guiding the development process.

• Source of Truth: The single source of truth for the system. Here, it refers to the three markdown files that AIs should reference.

• Divergence Protocol: A strict rule that requires AIs to report and seek human approval if they need to deviate from the design or requirements during implementation.

• Source: Spec-Driven Development