Cedar Policy Language for Per-Tool-Call Runtime Authorization: Attributes-Based Gating on Every Agent Action

Petronella Cybersecurity·high signalXBlueskyLinkedInCopy link

Wrap every tool call through a Cedar policy decision point (PDP) that evaluates a policy against principal role, resource tool name, and parameter-level attributes before execution—not just at session start. A Cedar policy can express constraints like 'the data-analyst agent may call sql_query only when the query parameter contains no DELETE or DROP' with full ABAC expressiveness, sub-millisecond evaluation, and an audit log of every allow/deny decision. This addresses the core agentic authorization gap: RBAC at login time cannot constrain what a running agent does on its 50th tool call.