Federal AI Agent Assurance turns AI-agent and MCP changes into governed releases. It inventories agents and tools, creates integrity-sealed release manifests, identifies semantic configuration and authority changes, runs deterministic policy and TEVV checks, enforces independent review and risk acceptance, records precise authorization decisions, and compares observable runtime activity with the approved boundary. It works air-gap-first, requires no cloud service, has no telemetry, and can operate entirely through imported manifests, test evidence, runtime snapshots, and offline transfer bundles. Optional behind-the-firewall AI provides evidence-citing advisory review with zero decision authority. Pairs with Federal AI LookupOps: LookupOps governs what the agent depends on; Agent Assurance governs what the agent is permitted to do with it. It does not grant an ATO, certify compliance, or replace human authorizing officials.