Book a free call →

Vibe coding for purchasing managers: the supplier portal, the approval flow and the spend report the ERP never gave you.

Purchasing runs on an ERP that does most things badly and a set of spreadsheets that fill the gaps. Supplier onboarding lives in email. Approvals live in a chain of forwards. The spend analysis that would change a negotiation takes a week to assemble. Vibe coding lets a purchasing manager build the missing tools directly.

Book a free callSee what breaks
ROUND 01 — The purchasing manager seat

Why a purchasing manager’s build is different.

Purchasing tools carry two kinds of sensitive information: supplier pricing and contract terms that competitors would pay for, and the approval controls that stop fraud. A tool that leaks the first or bypasses the second is not a convenience, it is an audit finding or a loss.

This page is about vibe coding from the purchasing desk: what you build, how a homemade procurement tool goes wrong, and how to build it so it strengthens your controls instead of routing around them.

ROUND 02 — What you build

What purchasing managers build first.

  • 01The supplier onboarding portal

    Suppliers submit their details, documents and certifications through a form, the file is checked for what is missing, and the record lands in one place instead of an inbox.

  • 02The purchase request and approval workflow

    Requests with a budget line, a threshold-based approval chain, a timer on each step and a record of who approved what. The email chain, replaced.

  • 03The spend analysis dashboard

    Spend by supplier, category and cost centre, pulled from the ERP and the card feed, with maverick spend flagged, refreshed every morning instead of every quarter.

  • 04The contract and renewal tracker

    Every contract with its end date, notice period, owner and value, with reminders before the auto-renewal. The tool that saves the money the renewals quietly cost.

ROUND 03 — What breaks

Where it goes wrong for a purchasing manager.

  • Supplier pricing is readable by anyone with the link

    The dashboard has no login or one login for everyone. Negotiated rates, contract terms and supplier margins are one shared URL away from a competitor or a supplier's rival.

  • The approval workflow can be bypassed

    The AI built the approval chain in the front end. Anyone who knows the URL for the next step can skip the approver. The control you built to prevent fraud now documents it after the fact.

  • The ERP integration writes when it should only read

    The tool was given a key that can change purchase orders and supplier records. A bug or a bad prompt now edits the system of record, and the ERP team finds out from an invoice.

  • Supplier documents in a public bucket

    Certificates, bank details and signed contracts uploaded through the onboarding form land in file storage with default settings. Default often means public.

The full catalogue of what breaks →

ROUND 04 — With a CTO in your corner

What changes.

A CTO in your corner treats your procurement tool as a control, not a convenience. Approvals are enforced on the server where they cannot be skipped. ERP access is read-only until there is a reason for it not to be. Supplier documents are private and pricing is behind a login with roles. You still build the tool purchasing has needed for years. It just passes the audit it was built to help with.

How a month in the corner works →

ROUND 05 — By industry

Vibe coding for purchasing managers, by industry.

The rules change with the data. Pick the industry you build in.

ROUND 06 — Questions

What purchasing managers ask.

ROUND 07 — Other seats

Not a purchasing manager?

Talk to a CTO before your next build ships.

Thirty minutes, free, no card. What you built, what is going on with it, whether we can help.

Book a free callSee the price

In your corner.