> ## Documentation Index
> Fetch the complete documentation index at: https://docs.app.useharmonia.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Operations overview

> Operate Harmonia through failure, recovery, approval, replay, observability, and deployment.

Operations begins from persisted truth. A model response, log line, SQS delivery, or external API response is not by itself proof that a job advanced or an effect succeeded.

<CardGroup cols={2}>
  <Card title="Operating model" href="/operational-model">Understand workers, outboxes, retries, and ownership.</Card>
  <Card title="Operational control plane" href="/operational-control-plane">Use the needs-you inbox, resumable job shells, durable controls, and batch execution.</Card>
  <Card title="Recover failures" href="/failure-recovery">Classify failures and resume safely.</Card>
  <Card title="Audit authority" href="/approval-and-audit">Trace digest-bound human decisions.</Card>
  <Card title="Inspect telemetry" href="/observability">Correlate jobs, operations, traces, and usage.</Card>
  <Card title="Verify a release" href="/operations/release">Create exact-commit evidence and scan every deployable image.</Card>
  <Card title="Respond to alarms" href="/operations/incidents">Contain incidents and reconcile effect-bearing work.</Card>
  <Card title="Restore a backup" href="/operations/backup-restore">Exercise recovery into an isolated table.</Card>
  <Card title="Rotate service tokens" href="/operations/secret-rotation">Replace generated internal credentials safely.</Card>
  <Card title="Run local load" href="/operations/local-load">Measure a built loopback service without hosted traffic.</Card>
</CardGroup>

Use [State ownership](/state-ownership) when two systems disagree and [Record and replay](/record-replay) when validating idempotency or reproducing an execution.