Take the on-call seat

One checkout incident. New evidence at each step.

Fictional exercise · Northstar Tickets. All counts, service states, AI text and results are authored teaching data.

Your operating authority

You may pause the rollout and checkout config publisher, restore verified c8 on the affected cohort, and request incident-command support. Binary changes, database writes and global restarts are not authorized. After a scoped config restore, stop and escalate if errors exceed 1% in the next two-minute check.

How it works

Choose an action and write its reason before the next packet appears. The scoped configuration restore has an authored readback. Proposals outside the written permission are not executed and receive no recovery result. Back preserves your notes. Revising an earlier decision clears later decisions; the log still records which evidence you have seen.

Google's May 2026 SRE account supports checking agent controls. Cloudflare's November 2025 incident report supports inspecting configuration propagation and downstream recovery. This exercise uses its own fictional evidence.

Read the worked incident →