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New framework tests LLM agent tool-use robustness against failures

Researchers have developed BENCH2ROBUST, a new framework designed to evaluate and improve the robustness of Large Language Model (LLM) agents that use tools. This framework converts existing benchmarks into stochastic environments that simulate real-world tool failures, requiring agents to learn strategies for retrying, switching tools, or abstaining when faced with errors. Experiments using BENCH2ROBUST showed that combining Bayesian Tool Memory (BTM) with reinforcement learning significantly enhances agent performance under tool failure conditions, improving robustness by up to 16.8 percentage points without retraining and reaching 40.8-45.5% success rates in simulated retail tasks. AI

IMPACT Enhances LLM agent reliability in real-world scenarios by addressing tool failure, potentially improving user experience and task completion rates.

RANK_REASON The cluster describes a new research paper detailing a novel framework and experimental results for improving LLM agent robustness. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

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New framework tests LLM agent tool-use robustness against failures

COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Chaoran Chen, Vy Nguyen, Ziji Zhang, Abhinav Gullapalli, Ziyi Wang, Yuxuan Lu, Dakuo Wang, Jing Huang, Zhou Yu, Jin Lai ·

    Retry, Switch, or Abstain? Learning Strategy-Aware Tool-Use Policies via Controlled Error Injection

    arXiv:2608.11977v1 Announce Type: new Abstract: Tool-using LLM agents are commonly trained and evaluated in environments where tool calls succeed reliably, yet deployed tools can fail transiently, persistently, or silently. Robust recovery therefore requires more than repeated re…