v0.12 Release Notes (Sep 18, 2025)

New Features

List and manage datasets programmatically

The SDK now includes a Dataset.list() method for retrieving all datasets in a project.

Better error messages for Agent Behavior Monitoring (ABM) setup

The SDK now validates that you're using the @observe decorator when calling async_evaluate(), showing clear warning messages if the span context is missing. This catches a common setup mistake early and enables easy fixing.

Customize spans with names and attributes

The @observe decorator now accepts span_name and attributes parameters for more granular control over how spans appear in traces. This makes it easier to add custom metadata and organize traces with meaningful names that reflect your agent's structure.

Fixes

No bug fixes in this release.

Improvements

Visual refinements to trace tree

Icons in the trace tree UI have been moved to the right and connected with elbow connectors, making the hierarchy easier to scan. Minor polish includes adjusted search input heights and cleaner export button styling.