What is the best workflow for building and iterating on an app with Claude Code?

Building with Claude Code works best when you treat it as a collaborative partner—a senior developer who handles the implementation details while you retain the architectural oversight.

Here is a recommended workflow for an efficient, iterative loop:

1. Preparation: The "Context-First" Mindset

Claude Code performs best when it understands your project structure and constraints. Before you start:

• Keep a README.md or architecture.md: Ensure your project has a clear explanation of how the code is structured. Claude will read these files to understand your patterns.
• Use a .claudeignore file: Similar to .gitignore, use this to keep the agent focused by excluding massive build folders, logs, or third-party datasets it doesn't need to touch.

2. The Iterative Loop (The "Plan-Execute-Review" Cycle)

Don't ask for a massive feature in one prompt. Break the work into atomic tasks.

• Plan: Ask Claude Code to create a plan before it touches any code.
  • Prompt example: "I need to add user authentication using Supabase. Please outline the steps you'd take to implement this, including file modifications and dependencies."
• Execute: Once the plan looks good, use the agent to implement the steps sequentially.
  • Prompt example: "Proceed with step 1 of your plan."
• Review/Test: After the agent applies changes, run your local test suite or manually verify the flow. If something is off, don't try to fix it yourself—tell the agent: "That caused an issue in X component; please revert or adjust the logic based on this error."

3. Maintaining Code Quality

Claude Code is good at following your lead, but you must define the standards:

• Set the standard early: Tell it, "For this project, please follow clean architecture principles, keep components under 100 lines, and always add JSDoc comments."
• Code Reviewing: If you are unsure about a change, ask the agent to explain its reasoning. "Why did you choose this implementation over using [alternative library]?"

4. Tips for Success

• Small Commits: Ask the agent to commit frequently. If a task goes off the rails, it is much easier to git reset to a working state than to try to undo 500 lines of bad logic.
• Use Terminal Context: Claude Code is aware of your terminal. If you see a build error, simply paste the error message or ask, "The terminal shows a linting error in api.ts, please investigate."
• Stay in the Loop: Always perform a quick git diff after the agent finishes a major task. It is a powerful tool, but verifying the diff ensures that you stay in control of your codebase.

When to pause

If the agent starts spinning its wheels or fails to solve a bug after two attempts, stop. Manually inspect the code, identify the root cause, and then provide that feedback to the agent. Sometimes it needs a human to point out a configuration mismatch that it cannot "see" in the file system.

By treating the agent as a pair programmer rather than a "fire-and-forget" generator, you will end up with a cleaner, more robust codebase.