Remove metadata from TrajectoryGroup, keep only on Trajectory#208
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This simplifies the data model by only allowing metadata on individual trajectories rather than on trajectory groups. Users who need group-level metadata can set the same metadata on each trajectory in the group. Benefits: - Simpler schema for ingesting into experiment tracking tools - Clearer mental model of where to store metadata - No known users of group-level metadata functionality We can add this back later if it proves necessary. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
bradhilton
approved these changes
Jul 8, 2025
surajpatildev
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to meetkiara/ART
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this pull request
May 20, 2026
Remove metadata from TrajectoryGroup, keep only on Trajectory
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Summary
Rationale
We're not aware of anyone using group-level metadata, and this change provides several benefits:
Users who need group-level metadata can still achieve this by setting the same metadata on each trajectory in the group.
Changes
metadata: dict[str, MetadataValue] = {}field from TrajectoryGroupmetadataparameter from all TrajectoryGroup constructors and overloadsWe can add this functionality back later if it proves necessary.
🤖 Generated with Claude Code