n8n-loops

Use the Loop Over Items node in n8n for explicit batching and chunked processing to prevent rate limiting. It iterates over multi-item datasets in controlled batches, ensuring safe API interaction without exceeding request limits.

Your n8n summary node runs multiple times because it defaults to per-item iteration. Set `executeOnce: true` on the node to ensure aggregates, totals, and notification writes only happen one time per workflow run.

The best way to handle pagination in n8n is using the built-in HTTP Request node pagination feature. It automatically fetches all pages from paginated APIs, eliminating the need for hand-rolled page loops or recursive iteration patterns.

Wire the Loop Over Items node in n8n by connecting output index 0 for the done sequence and output index 1 for the loop sequence. Correctly mapping these outputs prevents workflow routing errors and ensures proper batch termination.

Use `executeOnce: true` in n8n for one-time aggregation, totals, and summaries. Keep the default per-item iteration when you need subsequent nodes to process each item individually across the workflow.

Prevent infinite reset loops in n8n by enforcing bounded termination constraints. Ensure your reset loop logic includes definitive exit conditions to guarantee the workflow stops processing when the loop cycle completes.