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Autori principali: Wu, Zijian, Liu, Xiangyan, Zhang, Xinyuan, Chen, Lingjun, Meng, Fanqing, Du, Lingxiao, Zhao, Yiran, Zhang, Fanshi, Ye, Yaoqi, Wang, Jiawei, Wang, Zirui, Ni, Jinjie, Yang, Yufan, Xu, Arvin, Shieh, Michael Qizhe
Natura: Preprint
Pubblicazione: 2025
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Accesso online:https://arxiv.org/abs/2509.24002
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author Wu, Zijian
Liu, Xiangyan
Zhang, Xinyuan
Chen, Lingjun
Meng, Fanqing
Du, Lingxiao
Zhao, Yiran
Zhang, Fanshi
Ye, Yaoqi
Wang, Jiawei
Wang, Zirui
Ni, Jinjie
Yang, Yufan
Xu, Arvin
Shieh, Michael Qizhe
author_facet Wu, Zijian
Liu, Xiangyan
Zhang, Xinyuan
Chen, Lingjun
Meng, Fanqing
Du, Lingxiao
Zhao, Yiran
Zhang, Fanshi
Ye, Yaoqi
Wang, Jiawei
Wang, Zirui
Ni, Jinjie
Yang, Yufan
Xu, Arvin
Shieh, Michael Qizhe
contents MCP standardizes how LLMs interact with external systems, forming the foundation for general agents. However, existing MCP benchmarks remain narrow in scope: they focus on read-heavy tasks or tasks with limited interaction depth, and fail to capture the complexity and realism of real-world workflows. To address this gap, we propose MCPMark, a benchmark designed to evaluate MCP use in a more realistic and comprehensive manner. It consists of $127$ high-quality tasks collaboratively created by domain experts and AI agents. Each task begins with a curated initial state and includes a programmatic script for automatic verification. These tasks demand richer and more diverse interactions with the environment, involving a broad range of create, read, update, and delete (CRUD) operations. We conduct a comprehensive evaluation of cutting-edge LLMs using a minimal agent framework that operates in a tool-calling loop. Empirical results show that the best-performing model, gpt-5-medium, reaches only $52.56$\% pass@1 and $33.86$\% pass^4, while other widely regarded strong models, including claude-sonnet-4 and o3, fall below $30$\% pass@1 and $15$\% pass^4. On average, LLMs require $16.2$ execution turns and $17.4$ tool calls per task, significantly surpassing those in previous MCP benchmarks and highlighting the stress-testing nature of MCPMark.
format Preprint
id arxiv_https___arxiv_org_abs_2509_24002
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle MCPMark: A Benchmark for Stress-Testing Realistic and Comprehensive MCP Use
Wu, Zijian
Liu, Xiangyan
Zhang, Xinyuan
Chen, Lingjun
Meng, Fanqing
Du, Lingxiao
Zhao, Yiran
Zhang, Fanshi
Ye, Yaoqi
Wang, Jiawei
Wang, Zirui
Ni, Jinjie
Yang, Yufan
Xu, Arvin
Shieh, Michael Qizhe
Computation and Language
Artificial Intelligence
MCP standardizes how LLMs interact with external systems, forming the foundation for general agents. However, existing MCP benchmarks remain narrow in scope: they focus on read-heavy tasks or tasks with limited interaction depth, and fail to capture the complexity and realism of real-world workflows. To address this gap, we propose MCPMark, a benchmark designed to evaluate MCP use in a more realistic and comprehensive manner. It consists of $127$ high-quality tasks collaboratively created by domain experts and AI agents. Each task begins with a curated initial state and includes a programmatic script for automatic verification. These tasks demand richer and more diverse interactions with the environment, involving a broad range of create, read, update, and delete (CRUD) operations. We conduct a comprehensive evaluation of cutting-edge LLMs using a minimal agent framework that operates in a tool-calling loop. Empirical results show that the best-performing model, gpt-5-medium, reaches only $52.56$\% pass@1 and $33.86$\% pass^4, while other widely regarded strong models, including claude-sonnet-4 and o3, fall below $30$\% pass@1 and $15$\% pass^4. On average, LLMs require $16.2$ execution turns and $17.4$ tool calls per task, significantly surpassing those in previous MCP benchmarks and highlighting the stress-testing nature of MCPMark.
title MCPMark: A Benchmark for Stress-Testing Realistic and Comprehensive MCP Use
topic Computation and Language
Artificial Intelligence
url https://arxiv.org/abs/2509.24002