How I Use Claude 3.5 for Requirements Refinement

Requirements refinement is one of the most time-consuming parts of my job. Taking a vague business need and turning it into something an engineering team can build requires deep thinking, edge case analysis, and multiple rounds of review. I have been using Claude 3.5 Sonnet to accelerate this process, and the results have been genuinely impressive.

My Workflow

I start with whatever the client or product owner gives me — usually a paragraph or a bullet list describing what they want. I paste it into Claude with a specific prompt: "Act as a senior business analyst. Given this requirement, generate detailed acceptance criteria, identify edge cases, list assumptions that need validation, and flag any ambiguities."

The output is not perfect. It never is. But it gives me a structured first draft in minutes instead of hours. More importantly, it catches things I would have missed. Claude is remarkably good at identifying edge cases — the "what happens when the user does X but Y is already in state Z" scenarios that cause production defects when overlooked.

Where It Excels

Acceptance criteria generation is the sweet spot. Claude produces Given-When-Then statements that are clear, testable, and comprehensive. I usually need to edit 20 to 30 percent of them, but the starting point is solid.

It is also excellent at identifying missing requirements. When I feed it a feature spec, it will ask questions like "What happens if the API times out?" or "Is there a maximum number of items?" These are the questions that usually surface mid-sprint and cause scope creep.

Where It Struggles

Claude does not know your business context. It cannot tell you that your payment provider has a specific quirk or that your legacy system does not support a particular integration pattern. Domain knowledge still requires humans.

The Takeaway

AI is not replacing business analysis. It is making it faster and more thorough. I spend less time on first drafts and more time on the strategic thinking that actually requires my experience. That is the right division of labor.