Templates / Validate JSON and CSV import data via webhook with configurable rules

Validate JSON and CSV import data via webhook with configurable rules

Ready for 3.0

by Florian Eiche ✓ · 62 views · created 2026-03-11 · Document Extraction

Ready 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 workflow has 4 nodes and runs when an HTTP POST request hits its webhook URL. It uses only n8n's built-in nodes.

How it runs

Trigger: When an HTTP POST request hits its webhook URL.

Set Default Rules (Edit Fields (Set)): sets or maps fields
Validate Data (Code): runs custom JavaScript code
Respond with Report (Respond to Webhook): sends the response back to the webhook caller

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 (4)

Webhookn8n-nodes-base.webhook
Edit Fields (Set)n8n-nodes-base.set
Coden8n-nodes-base.code
Respond to Webhookn8n-nodes-base.respondToWebhook

From the author

How it works Send a POST request with a JSON array of records and your validation rules. The workflow checks every field in every row and returns a structured report showing valid/invalid rows with specific error messages. Supported rules: required, type…
Excerpt from Florian Eiche's description on n8n.io.

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