//n8n pitfalls · high
Webhook node response must be sent explicitly
When using the Webhook node with "Respond to Webhook" set to "Using Respond to Webhook Node", you must include a "Respond to Webhook" node in your workflow. Without it, the webhook caller will timeout waiting for a response. For simple acknowledgments, use "When Last Node Finishes" response mode instead.
- Category
- n8n_general
Source: the n8n-mcp pitfall list, maintained by the tool's author
Mistakes AI agents make in n8n
- Execute Workflow + Wait nodes cause data loss
- SplitInBatches + Wait nodes cause state loss
- Never use append on sheets with formula columns
- $env expressions blocked in Code nodes
- saveExecutionProgress fills disk space
- IF node uses branch true/false not sourceIndex
- Code node $input.all() vs $input.first()
- Per-item execution on large datasets
- Error Trigger workflow must be separate
- $getWorkflowStaticData global loses data in loops