Decision Surfaces

A decision surface is a named decision boundary on a business service. It is the unit at which MIDAS evaluates authority and emits an evidence envelope.

Key fields:

• id — globally unique identifier.
• business_service_id — the parent service.
• process_id — the process this surface belongs to, if any.
• status — active, inactive, retired.
• effective_policy_source — override | inherited | none.
• effective_policy_id — the active fail-mode policy.
• inherits_bs_policy — true if the surface uses its parent service's default policy.
• version — surface version.

A surface in complete posture has:

• an active authority profile,
• an active grant attached to that profile,
• the grant attached to a known active agent,
• an effective fail-mode policy,
• a wired-up escalation target.

Anything missing surfaces a diagnostic. See Authority Graph — Posture.