Claude Code v2.1.225 ·
Experiment-exposure telemetry gains variation_key and stops padding empty strings
Experiment tracking records which variation you got and omits blank optional fields.
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
0Signal: worth watching, 1 to 5
TelemetryArea: what it touches
Internal ChangesKind: in v2.1.225,
Internal ChangesSection of the release
What
Experiment events now record which variation was seen, and absent optional fields are omitted rather than sent as empty strings.
Details
- Adds a
variation_key field to the experiment event schema. user_attributes and experiment_metadata default to undefined instead of "".- The same treatment applies to the generic event's
process and additional_metadata fields.
Evidence
variation_key
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
See this entry in the whole of v2.1.225 →
