AI agents

Tool use, function calling, orchestration and the protocols that let models act rather than only answer.

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arXiv AI
5d ago

Cross-Interface Authorization for AI Computer-Use Agents

The paper introduces a protocol for cross‑interface authorization of AI computer‑use agents, ensuring that policy decisions remain consistent across graphical interfaces, command lines, APIs, scripts, and Model Context Protocol servers. It defines a profile‑bounded system that enumerates all effect‑bearing routes, normalizes requests to canonical effects, issues prepare tickets, and re‑verifies all relevant state at commit time, requiring a sink receipt for a committed result. Extensive testing across two runtime mappings produced thousands of traces, with rigorous checks confirming no semantic regressions, mutant rejections, and correct outcome matching.

By Genliang Zhu, Chu Wang
arXiv AI
5d ago

Latent Sparse Attention: Towards Subquadratic Ultra-Long Context Attention

arXiv:2610.42147v1 Announce Type: new Abstract: Agentic workflows are increasingly shifting towards long-horizon tasks, such as open-ended scientific work, where models benefit from long context wind...

By Ales Kubicek, Andrea Caciolai, Liangzu Peng, Sukrit Sumant, Benjamin Hoover, Fraser Greenlee, Ruairidh M. Battleday, Radim Urban, Torsten Hoefler, James C. R. Whittington
arXiv AI
5d ago

P-ContextBench: From Personal Fact Recall to Personalized Agent Behavior

P-ContextBench is a benchmark designed to evaluate how well large language models understand and safely use personal context. It creates realistic, life‑story‑grounded digital humans from U.S. demographic seeds, embedding traits, routines, goals, and constraints in fragmented, evolving synthetic mobile‑app records. The benchmark tests five capabilities—fact recovery, temporal tracking, pattern inference, and safe handling of conflicting requests—using a multi‑stage validation pipeline and 4,810 verified test cases.

By Grant Nasir Brown, Abdul Basir Bari, Anmol Tadikonda, Isabel Song
arXiv Computation and Language
5d ago

Subquadratic Attention with a Hierarchical Tree-Structured Indexer

The paper introduces Zyphra Hierarchical Attention (ZHA), a subquadratic sparse attention mechanism that uses a tree-structured indexer to compress key-value pairs and retrieve a sparse subset of keys during query time. By iteratively deepening the tree, ZHA achieves sublinear routing and attention costs, resulting in overall subquadratic scaling for long-context processing. The method can be applied to existing pretrained models with minimal distillation training, maintains performance on diverse evaluation tasks, and remains robust even with very deep trees.

By Leon Lufkin, Cutter Dawes, Alexander Speicher, Kamesh Krishnamurthy, Tom\'as Figliolia, Beren Millidge