ResearchResearch paperAgents & Tool Use · Safety & Alignment · Efficiency & Inference1 source · Oct 11, 2026

Revocation Is Not Complete at Receipt: An Executable Outcome Contract for Distributed Agent-Tool Gateways

Distributed agent workflows cache delegated authority at tool gateways.

Key points

  • Revocation may be reported at issuer commit, transport acknowledgment, or receiver persistence, although none of these observations establishes that all gateways enforced the change or that guarded effects stopped.
  • We define C0-C5, a bounded outcome contract spanning issuer commit through effect prevention, and implement it as a persistent monitor over a frozen gateway set, call set, and observation window.
  • A 14-case fault matrix checks conservative classification, sticky violations, restart persistence, and evidence immutability.
  • OPA/Toxiproxy and a live three-role LLM workflow with networked MCP tools reproduce the persisted-but-not-enforced boundary on narrower surfaces.

Sources (1)

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