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Are Tools All We Need? Unveiling the Tool-Use Tax in LLM Agents

BACKGROUND
1 SIGNALFIRST DETECTED 4 May 2026
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4 May
To Call or Not to Call: A Framework to Assess and Optimize LLM Tool Calling

arXiv:2605.00737v1 Announce Type: new Abstract: Agentic AI architectures augment LLMs with external tools, unlocking strong capabilities. However, tool use is not always

REPORT · WHERE · ArXiv CS.AIOPEN STORY
11 May
Beyond the Black Box: Interpretability of Agentic AI Tool Use

arXiv:2605.06890v1 Announce Type: new Abstract: AI agents are promising for high-stakes enterprise workflows, but dependable deployment remains limited because tool-use failures

REPORT · WHAT · ArXiv CS.AIOPEN STORY
13 May
Hindsight Hint Distillation: Scaffolded Reasoning for SWE Agents from CoT-free Answers

arXiv:2605.11556v1 Announce Type: new Abstract: Solving complex long-horizon tasks requires strong planning and reasoning capabilities. Although datasets with explicit

REPORT · WHAT · ArXiv CS.AIOPEN STORY
2 Jul
Can Agents Generalize to the Open World? Unveiling the Fragility of Static Training in Tool Use

arXiv:2607.01084v1 Announce Type: new Abstract: While Large Language Model (LLM) agents demonstrate proficiency in static benchmarks, their deployment in real-world scenarios is

REPORT · WHAT · ArXiv CS.AIOPEN STORY
25 Apr
Tool Attention Is All You Need: Dynamic Tool Gating and Lazy Schema Loading for Eliminating the MCP/Tools Tax in Scalable Agentic Workflows

arXiv:2604.21816v1 Announce Type: new Abstract: The Model Context Protocol (MCP) has become a common interface for connecting large language model (LLM) agents to external tools,

REPORT · WHAT · ArXiv CS.AIOPEN STORY
1 Sept
Learning to Use Tools: Reinforcement Learning for Tool-Integrated Mathematical Reasoning

arXiv:2608.28447v1 Announce Type: new Abstract: Current large language models (LLMs) increasingly benefit from external tool integration, especially for tasks requiring reliable

REPORT · WHAT · ArXiv CS.AIOPEN STORY
23 Jul
Competitive and Complementary Tools

arXiv:2607.18460v1 Announce Type: cross Abstract: Humans have always externalized thought onto tools, from the tally and the abacus to the map and, now, large language models. I

REPORT · WHAT · ArXiv CS.AIOPEN STORY
9 Apr
Scaling Coding Agents via Atomic Skills

arXiv:2604.05013v1 Announce Type: cross Abstract: Current LLM coding agents are predominantly trained on composite benchmarks (e.g., bug fixing), which often leads to

REPORT · HOW · ArXiv CS.AIOPEN STORY
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