Design Phase Before Coding

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Dear Anthropic Team,

My name is Walid. I've been using Claude Code for several months to build various systems and prototypes.

What Works:
Claude Code is excellent at writing code and helping me build working applications.

What's Missing:
There's no Design Phase to validate the approach BEFORE we start coding. A source that provides the best solution based on proven systems.

Example:
Imagine you want to design a RAG system (document search system). Today, there's no way to know if using a vector database, SQL database, or both is the right choice. There's no guidance on what architecture actually works for your specific needs.

The Problem:
Currently, I propose an idea (like a RAG system), I start brainstorming with Claude for an architecture, Claude Code starts creating all the codes, and only AFTER days of work do we discover if the approach was correct or not. This wastes time and effort.

Proposed Solution

What I Need:
A Design Phase that happens BEFORE coding begins. This phase should:

1. Ask questions to understand my real needs (What data? What accuracy? What performance?)
2. Recommend proven architectures based on industry best practices ("For your needs, use approach X")
3. Validate my ideas and say "NO" when I propose something that won't work well
4. Give confidence that the approach is correct before we invest days of coding

How It Should Work:

• Me: "I want to build a RAG system"
• Claude: "Let me understand your needs first..." [asks clarifying questions]
• Claude: "Based on your answers, the proven approach is Hybrid RAG (SQL + Vector). This gives 85% accuracy for your use case."
• Me: Approves the design
• THEN Claude starts coding

Why This Matters:
This would save days of development time and ensure we build the RIGHT solution from the start, not just SOMETHING that might not work.

Claude Code is already excellent at coding. Adding a Design Phase would make it exceptional at ensuring we build things the correct way using proven techniques.

Thank you for considering this.

Best regards,
Walid

Alternative Solutions

_No response_

Priority

High - Significant impact on productivity

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_