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Where this fits: Datasets are part of Refine, after Signals. They turn real traces into reusable test cases for regression testing.
A dataset is a collection of rows you curate for testing and improving your agent. Each row holds an input, the agent’s output, an optional expected output, and arbitrary metadata. Teams use them as golden datasets: stable, known-good test sets that a fix has to keep passing.
The Datasets page listing golden datasets with name, description, and last updated

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What a dataset row contains

Beyond these built-ins you can add your own custom columns, and rename, reorder, or remove any column.
A dataset detail view showing rows with input, output, and expected output columns

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Create a dataset

You can build a dataset three ways:

From real traces

Select traces from the trace list, search results, or a signal, and add them to a dataset. The most realistic test cases come straight from production.

Manually

Open Datasets in your project, create a new dataset, then Import a CSV or Add row to enter cases by hand.

From your coding agent

Through the MCP server, an agent like Claude or Cursor can create datasets and pull in the traces behind a signal for you.

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How datasets are used

  • Regression testing: replay a dataset’s inputs against your agent and compare results to the expected outputs and your evaluations. See Regression testing.
  • Curating test sets: collect representative traces from Search and Signals into a stable, reusable set.
  • Sharing with your harness: export a dataset as CSV to drive tests in your own pipeline.

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