agentic-trust-boundaries

To prevent cross-agent prompt injection in multi-agent orchestration, you must enforce per-edge authorization checks and validate inter-agent payloads in real time before any tool use or memory access occurs.

Trust transitivity in multi-agent workflows occurs when an agent delegates unsafe privileges to another. You contain it by implementing typed handoff contracts that explicitly limit each agent's allowed tools, data sources, and trust level.

To enforce explicit handoffs between agents in an orchestration graph, define typed handoff contracts for all agent-to-agent edges specifying task description, allowed tools, allowed data sources, and trust level prior to execution.

You quarantine a misbehaving agent and trace provenance in a multi-agent system by applying containment and auditability mechanisms that isolate unauthorized actions and log the execution history across the orchestration graph.

Yes, you need typed handoff contracts to secure multi-agent trust boundaries because they provide deterministic validation and per-edge authorization checks required to prevent unauthorized tool use and privilege escalation.

The limitation of using trust boundaries for multi-agent security is that it requires deterministic validation before any tool use or memory access, meaning orchestration graphs with dynamic or undocumented agent edges cannot be effectively contained.