On the Robustness of Agentic Function Calling

Fuente: arXiv
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Auteurs principaux: Rabinovich, Ella, Anaby-Tavor, Ateret
Format: Preprint
Publié: 2025
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author Rabinovich, Ella
Anaby-Tavor, Ateret
author_facet Rabinovich, Ella
Anaby-Tavor, Ateret
contents Large Language Models (LLMs) are increasingly acting as autonomous agents, with function calling (FC) capabilities enabling them to invoke specific tools for tasks. While prior research has primarily focused on improving FC accuracy, little attention has been given to the robustness of these agents to perturbations in their input. We introduce a benchmark assessing FC robustness in two key areas: resilience to naturalistic query variations, and stability in function calling when the toolkit expands with semantically related tools. Evaluating best-performing FC models on a carefully expanded subset of the Berkeley function calling leaderboard (BFCL), we identify critical weaknesses in existing evaluation methodologies, and highlight areas for improvement in real-world agentic deployments.
format Preprint
id arxiv_https___arxiv_org_abs_2504_00914
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the Robustness of Agentic Function Calling
Rabinovich, Ella
Anaby-Tavor, Ateret
Computation and Language
Large Language Models (LLMs) are increasingly acting as autonomous agents, with function calling (FC) capabilities enabling them to invoke specific tools for tasks. While prior research has primarily focused on improving FC accuracy, little attention has been given to the robustness of these agents to perturbations in their input. We introduce a benchmark assessing FC robustness in two key areas: resilience to naturalistic query variations, and stability in function calling when the toolkit expands with semantically related tools. Evaluating best-performing FC models on a carefully expanded subset of the Berkeley function calling leaderboard (BFCL), we identify critical weaknesses in existing evaluation methodologies, and highlight areas for improvement in real-world agentic deployments.
title On the Robustness of Agentic Function Calling
topic Computation and Language
url https://arxiv.org/abs/2504.00914