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As Large Language Models (LLMs) evolve from passive text generators to active reasoning agents capable of interacting with external tools, the Model Context Protocol (MCP) has emerged as a key standardized framework for dynamic tool…

Artificial Intelligence · Computer Science 2025-10-14 Xuanqi Gao , Siyi Xie , Juan Zhai , Shiqing Ma , Chao Shen

Machine learning (ML) underpins foundation models in finance, healthcare, and critical infrastructure, making them targets for data poisoning, model extraction, prompt injection, automated jailbreaking, and preference-guided black-box…

Cryptography and Security · Computer Science 2025-12-30 Armstrong Foundjem , Lionel Nganyewou Tidjon , Leuson Da Silva , Foutse Khomh

The Model Context Protocol (MCP) is increasingly adopted to standardize the interaction between LLM agents and external tools. However, this trend introduces a new threat: Tool Poisoning Attacks (TPA), where tool metadata is poisoned to…

Cryptography and Security · Computer Science 2026-01-16 Zhiqiang Wang , Haohua Du , Guanquan Shi , Junyang Zhang , HaoRan Cheng , Yunhao Yao , Kaiwen Guo , Xiang-Yang Li

Tool-augmented LLM agents raise new security risks: tool executions can introduce runtime-only behaviors, including prompt injection and unintended exposure of external inputs (e.g., environment secrets or local files). While existing…

Cryptography and Security · Computer Science 2026-01-06 Zhuoran Tan , Run Hao , Jeremy Singer , Yutian Tang , Christos Anagnostopoulos

Large language models (LLMs) increasingly rely on external tools to perform time-sensitive tasks and real-world actions. While tool integration expands LLM capabilities, it also introduces a new prompt-injection attack surface: tool…

Cryptography and Security · Computer Science 2026-04-10 Hengkai Ye , Zhechang Zhang , Jinyuan Jia , Hong Hu

The Model Context Protocol (MCP) is an emerging open standard that defines a unified, bi-directional communication and dynamic discovery protocol between AI models and external tools or resources, aiming to enhance interoperability and…

Cryptography and Security · Computer Science 2025-10-08 Xinyi Hou , Yanjie Zhao , Shenao Wang , Haoyu Wang

As Model Context Protocol (MCP) introduces an easy-to-use ecosystem for users and developers, it also brings underexplored safety risks. Its decentralized architecture, which separates clients and servers, poses unique challenges for…

Computation and Language · Computer Science 2025-09-30 Huihao Jing , Haoran Li , Wenbin Hu , Qi Hu , Heli Xu , Tianshu Chu , Peizhao Hu , Yangqiu Song

The Model Context Protocol (MCP) has been proposed as a unifying standard for connecting large language models (LLMs) with external tools and resources, promising the same role for AI integration that HTTP and USB played for the Web and…

Computers and Society · Computer Science 2025-11-18 Hechuan Guo , Yongle Hao , Yue Zhang , Minghui Xu , Peizhuo Lv , Jiezhi Chen , Xiuzhen Cheng

Model Context Protocol (MCP) servers have rapidly emerged over the past year as a widely adopted way to enable Large Language Model (LLM) agents to access dynamic, real-world tools. As MCP servers proliferate and become easy to adopt via…

Cryptography and Security · Computer Science 2026-03-12 Pratyay Kumar , Miguel Antonio Guirao Aguilera , Srikathyayani Srikanteswara , Satyajayant Misra , Abu Saleh Md Tayeen

Model Context Protocol (MCP) servers contain a collection of thousands of open-source standardized tools, linking LLMs to external systems; however, existing datasets and benchmarks lack realistic, human-like user queries, remaining a…

Artificial Intelligence · Computer Science 2026-03-02 Shubh Laddha , Lucas Changbencharoen , Win Kuptivej , Surya Shringla , Archana Vaidheeswaran , Yash Bhaskar

Large language models (LLMs) can now access a wide range of external tools, thanks to the Model Context Protocol (MCP). This greatly expands their abilities as various agents. However, LLMs rely entirely on the text descriptions of tools to…

Artificial Intelligence · Computer Science 2025-09-23 Kazem Faghih , Wenxiao Wang , Yize Cheng , Siddhant Bharti , Gaurang Sriramanan , Sriram Balasubramanian , Parsa Hosseini , Soheil Feizi

We present M^3-Bench, the first benchmark for evaluating multimodal tool use under the Model Context Protocol. The benchmark targets realistic, multi-hop and multi-threaded workflows that require visual grounding and textual reasoning,…

Artificial Intelligence · Computer Science 2026-02-05 Yang Zhou , Mingyu Zhao , Zhenting Wang , Difei Gu , Bangwei Guo , Ruosong Ye , Ligong Han , Can Jin , Dimitris N. Metaxas

The Model Context Protocol (MCP) represents a significant advancement in AI-tool integration, enabling seamless communication between AI agents and external services. However, this connectivity introduces novel attack vectors that remain…

Cryptography and Security · Computer Science 2025-07-29 Nicola Croce , Tobin South

The Model Context Protocol (MCP) standardizes how AI agents discover and invoke external tools, with over 10,000 active servers and 97 million monthly SDK downloads as of early 2026. Yet MCP does not yet standardize how agents safely…

Software Engineering · Computer Science 2026-04-16 Vasundra Srinivasan

Large Language Models (LLMs) have evolved into AI agents that interact with external tools and environments to perform complex tasks. The Model Context Protocol (MCP) has become the de facto standard for connecting agents with such…

Cryptography and Security · Computer Science 2026-04-27 Christoph Bühler , Matteo Biagiola , Luca Di Grazia , Guido Salvaneschi

The Model Context Protocol (MCP) has become a common interface for connecting large language model (LLM) agents to external tools, but its reliance on stateless, eager schema injection imposes a hidden per-turn overhead the MCP Tax or Tools…

Artificial Intelligence · Computer Science 2026-04-24 Anuj Sadani , Deepak Kumar

Large Language Models (LLMs) with tool-calling capabilities have demonstrated remarkable potential in executing complex tasks through external tool integration. The Model Context Protocol (MCP) has emerged as a standardized framework for…

Software Engineering · Computer Science 2026-03-24 Sarat Mudunuri , Jian Wan , Ally Qin , Srinivasan Manoharan

The Model Context Protocol (MCP) has emerged as a standard for connecting Large Language Models (LLMs) to external tools and data. However, MCP servers often expose privileged capabilities, such as file system access, network requests, and…

Cryptography and Security · Computer Science 2026-03-24 Charoes Huang , Xin Huang , Amin Milani Fard

Machine learning is a field of artificial intelligence (AI) that is becoming essential for several critical systems, making it a good target for threat actors. Threat actors exploit different Tactics, Techniques, and Procedures (TTPs)…

Cryptography and Security · Computer Science 2022-07-04 Lionel Nganyewou Tidjon , Foutse Khomh

The Model Context Protocol (MCP) is emerging as a standard interface through which LLM agents invoke external tools, and a growing ecosystem of MCP servers now mediates access to vendor services. Most of these servers target vendors that…

Software Engineering · Computer Science 2026-04-08 Meriem Mastouri , Emna Ksontini , Amine Barrak , Wael Kessentini