0.20.0 is the follow-up pass on the metrics introduced in 0.19.0, driven by a round of dogfooding. The metrics surface gains provider parity so numbers mean the same thing across harnesses, a fragility cascade view, PR freshness, cost reporting, and aggregate rollups.
The CLI also gets stricter where silence used to hide mistakes: `ax sessions around` now rejects non-date arguments instead of quietly returning an empty window, and studio accepts schema_version 4 share manifests.
Highlights
- Metrics cover provider parity, fragility cascade, PR freshness, cost, and aggregates.
- `ax sessions around` rejects non-date arguments instead of returning an empty window.
- Studio accepts schema_version 4 share manifests.
Why it matters
The fastest way to make a metrics surface honest is to use it and fix what lies. This release closes the gaps a real dogfood run exposed, so the numbers ax reports hold up across providers and over time.