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arXiv — cs.AI preprintsInternational21 October 2026

Local Allow, Global Deny: Why Per-Action Authorization Does Not Compose in LLM Agents

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arXiv:2610.27620v1 Announce Type: cross Abstract: Autonomous LLM agents act through tools under per-action authorization: a local guard screens each tool call in isolation. We show that local authorization does not compose into global authorization. A compositional authorization failure (CAF) is a locally authorized execution, or a pair of locally authorized executions, that violates a global policy spanning intent, purpose, provenance, consent, and delegation. We characterize CAFs along two axes, expressiveness (single-trace safety versus relational k-safety) and observability (a ladder of mo
— arXiv — cs.AI preprints

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