Cost of Quality (COPQ) Tracker: Put a Real Dollar Figure on Quality Problems
Pull scrap, rework, returns, warranty, inspection, and supplier-defect costs into one tracked number — sorted into the four COPQ buckets, trended over time, and signed off by your quality manager before it reaches leadership.
A web tool where you import or enter cost-of-quality events, AI maps each one into the four COPQ categories (prevention, appraisal, internal failure, external failure), it computes totals and trend by period, your quality manager reviews and approves the summary, and it emails leadership a clean report plus exports a COPQ CSV.
Before you start
- A Supabase account (free)
- A Vercel account (free)
- A Resend account (free)
- A CSV or Google Sheet of your cost events from scrap, rework, NCR, complaint, and inspection sources
- Claude Code or any AI coding agent
The problem this kills
Everyone in the plant knows quality problems cost money. Nobody can tell you how much. The scrap number lives in one spreadsheet, rework hours hide inside the labor report, returns and warranty sit with customer service and finance, inspection cost is buried in the QC team's salaries, and supplier defect charge-backs are scattered across a dozen emails. So when leadership asks "what is poor quality actually costing us this quarter?", the honest answer is a shrug and a guess.
That guess is expensive. The cost of quality — and especially the external failure cost of problems that reach the customer — is usually far bigger than anyone admits, and it's invisible precisely because it's never added up in one place. The fix isn't a new ERP module or a six-figure consultant. It's one tool that collects the cost events you already have, sorts them into the four standard COPQ categories, totals them by period, and shows the trend — with a human signing off before the number goes upstairs. You do not need to be a developer to build it.
What you'll build
A simple internal web tool for your quality and finance teams. You import (or type in) cost events — a scrap ticket, a batch of rework hours, an NCR disposition, a customer complaint, a warranty claim, an inspection cost, a supplier defect charge-back — each with a dollar basis. The tool maps every event into one of the four COPQ buckets — prevention, appraisal, internal failure, external failure — using the source-to-category mapping you define in the interview. It computes totals by category and by period, shows the trend, and makes the split between internal and external failure (the expensive kind) impossible to miss. Your quality manager reviews the categorized summary and approves it, and only then does the tool email a clean report to leadership via Resend and export a COPQ CSV.
What's inside the Implementation Plan
The downloadable plan is a step-by-step file you paste into an AI coding agent. It opens by interviewing you about your business — your current quality and cost sources, the systems and spreadsheets they live in, the exact columns and codes in your data, how each source should map to a COPQ category, your cost basis (standard cost, actual hours, dollars per unit), your reporting periods, and your messy edge cases. It reads a short spec back to you for a thumbs-up, then builds the tool around your sources and your category mapping instead of a generic template. From there it walks the agent through the data model, the CSV/Sheet import and manual entry, the categorization engine, the totals-and-trend view, the quality-manager approval gate, and the leadership email plus COPQ CSV export. Every step ends with a ready-to-copy prompt.
The governance it includes (this is the point)
This isn't a toy spreadsheet. The plan builds in the controls a real quality function needs: login so only your team can use it, row-level security so people only see their own organization's data, a complete audit trail of every cost event, recategorization, and approval (who, what, when, and why), a hard human-approval gate so no COPQ summary reaches leadership until the quality manager signs it, and duplicate guards keyed on the cost-event ID so the same scrap ticket or warranty claim can't be counted twice. The whole tool exists to make one careful, defensible number — the AI categorizes and totals, a person owns the figure that goes to the board.
Who it's for
Quality managers, plant quality engineers, finance partners, and operations leaders who are tired of guessing what poor quality costs and want a defensible COPQ number they can stand behind. If you can describe where your scrap, rework, returns, warranty, and inspection costs come from, you can build this.
You've got this — open the plan, paste the first prompt, and you'll be putting a real dollar figure on quality this afternoon.