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feat(studio): surface experiment metadata as dynamic columns #412

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Merged
walston merged 3 commits into from
Jun 23, 2026
Merged

feat(studio): surface experiment metadata as dynamic columns #412

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6fdfd44
feat: surface experiment metadata as dynamic columns
walston Jun 23, 2026
b727694
fix: normalize metadata keys to lowercase to collapse case variants
walston Jun 23, 2026
fb61b4d
style: fix prettier formatting in ExperimentGroupDataView
walston Jun 23, 2026
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44 changes: 43 additions & 1 deletion web/packages/studio/src/components/dataViews/ExperimentGroupDataView/index.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,18 @@ export const ExperimentGroupDataView: FC<ExperimentGroupDataViewProps> = ({
[tableData]
);

// One column per metadata key: keys are lowercased so case variants (e.g. "status"
// and "Status") collapse into one column rather than producing duplicate headers.
const metadataKeys = useMemo(
() =>
[
...new Set(
tableData.flatMap((e) => Object.keys(e.metadata ?? {}).map((k) => k.toLowerCase()))
),
].sort(),
[tableData]
);

const makeColumns = useCallback<
ComponentProps<typeof DataViewRoot<ExperimentRow>>['makeColumns']
>(
Expand Down Expand Up @@ -181,6 +193,36 @@ export const ExperimentGroupDataView: FC<ExperimentGroupDataViewProps> = ({
enableSorting: false,
cell: ({ getValue }) => <Text>{getValue<string>() || '-'}</Text>,
}),
...metadataKeys.map((key) =>
accessor(
(original) => {
const meta = original.metadata ?? {};
// Match the first key that lowercases to this column's key.
const match = Object.keys(meta).find((k) => k.toLowerCase() === key);
return match ? meta[match] : undefined;
},
{
id: `metadata-${key}`,
header: snakeCaseToTitleCase(key),
enableSorting: false,
cell: ({ getValue }) => {
const raw = getValue<unknown>();
if (raw == null) return <Text>-</Text>;
const str = typeof raw === 'object' ? JSON.stringify(raw) : String(raw);
if (str.length <= 50) return <Text>{str}</Text>;
return (
<Tooltip
slotContent={<Text kind="body/regular/sm">{str}</Text>}
className={tooltipClassName}
side="bottom"
>
<Text className="cursor-default">{str.slice(0, 50)}…</Text>
</Tooltip>
);
},
}
)
),
...evaluatorNames.map((name, index) =>
accessor((original) => original.aggregate_scores?.[name]?.mean, {
id: `score-${index}`,
Expand Down Expand Up @@ -239,7 +281,7 @@ export const ExperimentGroupDataView: FC<ExperimentGroupDataViewProps> = ({
},
}),
],
[evaluatorNames]
[evaluatorNames, metadataKeys]
);

if (groupError) {
Expand Down