LangWatch Dataset Batch Trigger icon

LangWatch Dataset Batch Trigger

Emit one item per dataset row sequentially until the dataset is done (with optional experiment context).

LangWatch Dataset Batch Trigger

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Summary

Emits each row of a LangWatch dataset as a sequential n8n item, with optional experiment context and row-processing filters.

Inputs

None.

Output shape

main

Each emitted item is a structured JSON object containing the row data plus metadata (row number, progress, experiment/batch context).

Examples

Example 1: Basic dataset row emission

Set Dataset Slug or ID; leave Experiment Configuration and Row Processing Options at defaults; emitIntervalMs set to 0 for immediate emission.

Example 2: Emission with row filtering and experiment context

Enable Experiment with an Experiment ID/Slug; set Start Row/End Row/Step Size to slice the dataset; set emitIntervalMs to add a delay between items.

Discussion