Glossary

Plain-language definitions for the terms used throughout this documentation.

Term	Meaning
Action Authority	The overall governed layer that decides what an agent may do, executes it through one gateway, verifies the result, and records everything.
Authority Engine	The decision-making component: classifies every proposed action and routes it according to your autonomy policy.
Action Gateway	The single execution path. No action reaches a vendor API without going through it; credentials are brokered just-in-time.
Proof Engine	Verifies that a "fixed" finding actually changed the underlying condition — closure requires verification, not just execution.
Flight Recorder	The append-only, tamper-evident evidence record of every proposal, decision, approval, execution, verification, and rollback — including decisions HALO deliberately did not act on.
Action class	An objective, engineering-assigned property of an action's blast radius and reversibility (Safe, Constrained, Dangerous, Forbidden). Never adjustable by a model or a policy slider.
Autonomy matrix	Your tenant's per-action, per-environment routing table: which action classes may run automatically, and which always queue for human approval.
Human-in-the-loop (HITL)	A required human approval step before an action executes. Some action classes carry a default human-review requirement even where policy would otherwise permit automatic execution.
Risk appetite	Your declared, versioned tolerance for accepting a known weakness versus tolerance for disruption from defensive change — compiled into concrete enforcement (patch cadence, approval thresholds, maintenance windows).
Tenant	A customer's isolated data and configuration boundary. Every record in the system is scoped to exactly one tenant.
Kill switch	An emergency stop, available per action, per tenant, or globally, that halts autonomous execution immediately.
Connector	An integration that reads from (and, where governed, writes to) a specific vendor product or estate source — see the connector catalog in the customer documentation tier for what's live in your tenant.

Related docs

• Truesec HALO documentation
• The Action Authority spine