# Operations

Resolve access problems, observe agent work and plan lifecycle changes with separate evidence.

Operate by recorded state and named refusals. Public health, authenticated access, a runner connection and a working model call prove different parts of an installation.

[Access and refusals](/lys/operations/access-and-refusals/)

Identify the caller, resource and authority behind an access failure.
[Monitoring](/lys/operations/monitoring/)

Follow sessions, calls, usage, receipts and change signals.
[Installation lifecycle](/lys/operations/installation-lifecycle/)

Read the install, upgrade, health, start and stop contracts before planning maintenance.