arXiv AI

MiniScope: Authorizing Agents with Least-Privilege Permissions

arXiv AI
Sep 15

Empirical Evaluation of Task-Based Permission Scoping Architecture for AI Agents

The paper evaluates a task-based permission scoping architecture for AI agents, comparing a fine‑tuned RoBERTa‑large encoder to few‑shot Claude Haiku 4.5 on a 600‑prompt dataset. It shows the new system achieves comparable macro‑F1 (0.881 vs. 0.886) and higher precision (0.897 vs. 0.842), while reducing severity‑weighted residual risk from 1.12 to 0.63. The study also introduces an attack‑surface elimination metric, demonstrating that task‑granular control can close 84.4% of the severity‑weighted surface, far surpassing role‑based ceilings alone.

By Halil Burak Noyan
arXiv AI
Sep 25

Progressive Skill Discovery as Access Control for Tool-Using LLM Agents: Structural Governance through Role-Scoped Capability Delivery

The paper introduces skilder, a framework that organizes LLM agent capabilities into role‑scoped bundles of skills, tools, and instructions, with explicit limits. Agents start with a minimal role catalog, discover the roles needed for a task, and receive the associated tools only through a single MCP server, ensuring deterministic enforcement of scope. Experiments on 13 tasks with six models show that skilder’s authorization layer prevents unauthorized tool calls and parameter violations while maintaining flexibility through dynamic cross‑role capability acquisition.

By Michael Stettler, Benjamin Girardet, Jonas Canton, Nicolas Corod
arXiv AI
Jul 28

Intent-Governed Tool Authorization for AI Agents

arXiv:2606. 22916v2 Announce Type: replace Abstract: AI agents increasingly act through external tools: they read private data, construct structured payloads, submit write requests, export records, and coordinate workflows across application boundaries.

By Genliang Zhu, Chu Wang
arXiv AI
6d ago

Deny Without Disabling: Authorization-Paired Evaluation and Control for Multi-Agent Systems

The paper introduces authorization‑paired evaluation and the FlowReview framework to address safety issues in multi‑agent systems where shared evidence can enable prohibited uses. By jointly enforcing blocking of prohibited actions and completion of authorized ones, FlowReview connects object resolution, permission ranking, and deterministic enforcement. Experiments show that reviewing combined artifacts can eliminate denied‑commit rates without sacrificing authorized supply, highlighting the need to link object identity and permission to execution for safe collaboration.

By Yunbei Zhang, Saiyue Lyu, Janet Wang, Yingqiang Ge, Jiang Guo, Jihun Hamm, Chandan K Reddy