Verify customs shipping documents with GPT-4o-mini, Gmail and Slack
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 10 nodes and runs when an HTTP POST request hits its webhook URL (plus 1 other trigger). Along the way it connects OpenAI, Gmail and Slack.
How it runs
Trigger: When an HTTP POST request hits its webhook URL (plus 1 other trigger).
- Map Incoming Webhook Fields (Edit Fields (Set)): sets 6 fields: submitterEmail, shipmentRef, invoiceText…
- Slack: uses Slack
- Extract Bill of Lading Fields via GPT (OpenAI): uses OpenAI
- Cross-Check All Document Fields (Code): runs custom JavaScript code
- Slack: uses Slack
- Check Verdict — Ready to File? (If): checks a condition and branches into true / false
- Gmail: uses Gmail
- Gmail: uses Gmail
Services it uses
Before you upgrade to n8n 3.0
Nothing in this workflow is removed in n8n 3.0, so it should import and run after the upgrade.
Nodes used (8)
- Webhook
n8n-nodes-base.webhook - Edit Fields (Set)
n8n-nodes-base.set - OpenAI
@n8n/n8n-nodes-langchain.openAi - Code
n8n-nodes-base.code - If
n8n-nodes-base.if - Gmail
n8n-nodes-base.gmail - Slack
n8n-nodes-base.slack - Error Trigger
n8n-nodes-base.errorTrigger
From the author
Quick overview This workflow receives shipment document text via a webhook, uses OpenAI (GPT-4o-mini) to extract key fields from the Bill of Lading, cross-checks the extracted data against Invoice and Packing List fields, then emails a compliance verdict via…