Categories / Operations & Inventory

Validate invoices vs inventory and auto-create POs (n8n)

Business

client of an n8n builder (40–50 invoices/week)

Task

Gmail invoice PDFs → OpenAI vision extract → match Google Sheets inventory → create ERP POs

Result

"about 90% processed automatically"; "saving roughly 8-10 hours weekly"; built in ~3 days; trained ops manager ~2 hours

Tools

• n8n (23-node)
• OpenAI vision
• Gmail
• Google Sheets
• ERP
• Slack

Setup

1. watch Gmail for invoices
2. vision extract vendor/amount/items
3. match inventory
4. if OK create PO + Slack + reply
5. unmatched to review. Card from agentusecases.ai page read this run.

Source

agentusecases.ai ↗

Specifics rating

high specifics high = concrete numbers/quotes; med = partial; low = qualitative

Results as reported by the source; not independently verified.