# Sprint metrics

These routes return Bitrix24 source data without calculating a chart or team speed in VibeCode. The API key needs the `task` scope.

- `GET /v1/scrum/groups/:groupId/burn-down` calls `tasks.scrum.Sprint.getBurnDownInfo` and returns `{ "sprint": ... }`. The sprint is an object or `null`.
- `GET /v1/scrum/groups/:groupId/team-speed` calls `tasks.scrum.Sprint.getTeamSpeedInfo` and returns `{ "existsCompletedSprint": true|false }`.

`groupId` is a positive Scrum group ID. Access refusals use the standard API error response.