> For the complete documentation index, see [llms.txt](https://kerno.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kerno.gitbook.io/docs/portal/behaviour-drift.md).

# Behaviour Drift

How the tests behind each user flow and entry point changed over time.

Behaviour Drift shows how the tests behind each user flow and entry point changed, period by period. Use it to see where behaviour moved, when, and on which branch.

Pick a repository and a period of 24 hours, 7 days or 30 days, and choose whether to show all changes, or only tests added, updated or removed.

The screen has two grids, one for user flows and one for entry points. Each row is a flow or an entry point, and each square is a slice of the period, shaded by how many tests changed in it. Hover a square for the breakdown, and select it to open the change.

The change panel lists the baselines created and the tests added, updated and removed. Expand a change to compare its before and after, and open the run report behind it.

A row appears once your agent writes, updates or removes a test for that flow or entry point.