[Submitted on 27 Jul 2026]
Title:Structured Authority Injection: Persistent Human Control for LLM Agents via Typed MCP Overrides
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Abstract:LLM-based agents are increasingly used as autonomous orchestrators in distributed and multi-agent systems, yet a control gap remains: no protocol-level mechanism allows human operators to inject binding directives that persist across planning cycles. Free-text overrides suffer from ambiguous interpretation due to lack of schema validation and from authority erosion as operator instructions lose influence within accumulating context. We propose Structured Authority Injection (SAI), a protocol that addresses these issues by routing operator corrections through typed, schema-validated Model Context Protocol (MCP) tool calls and maintaining a ranked authority context prepended to each LLM prompt. SAI defines three override classes (Constraint, Priority, and Strategy) with distinct persistence semantics and an explicit precedence order enforced via a directed authority channel inaccessible to the planning process. The method requires no model fine-tuning or access to model weights and applies to instruction-tuned LLMs supporting MCP tool use. Evaluation across nine LLMs and eight scenarios targeting agent failure modes shows reduced ambiguous directive interpretation and mitigated authority decay across planning iterations, with lower prompt overhead in the strongest models (up to 38% depending on model and scenario), though benefit varies substantially across models. SAI provides a general design pattern for agent systems requiring explicit and persistent human control.
Subjects:
Artificial Intelligence (cs.AI)
Cite as: arXiv:2610.22373 [cs.AI]
(or arXiv:2610.22373v1 [cs.AI] for this version)
https://doi.org/10.48550/arXiv.2610.22373
arXiv-issued DOI via DataCite
Submission history
From: Hailu Xu [view email] [v1] Mon, 27 Jul 2026 03:38:01 UTC (536 KB)
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