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The Model Context Protocol (MCP) enables large language models (LLMs) to dynamically discover and invoke third-party tools, significantly expanding agent capabilities while introducing a distinct security landscape. Unlike prompt-only…

Cryptography and Security · Computer Science 2026-04-10 Mehrdad Rostamzadeh , Sidhant Narula , Nahom Birhan , Mohammad Ghasemigol , Daniel Takabi

The Model Context Protocol (MCP) standardizes how a large-language-model (LLM) agent and an external tool server exchange messages, but not trust: a host reads a server's self-declared tool list and dispatches calls, with no notion of which…

Cryptography and Security · Computer Science 2026-05-26 Alfredo Metere

The Model Context Protocol (MCP) is rapidly emerging as the middleware for LLM-based applications, offering a standardized interface for tool integration. However, its built-in security mechanisms are minimal: while schemas and declarations…

Cryptography and Security · Computer Science 2025-12-04 Biwei Yan , Yue Zhang , Minghui Xu , Hao Wu , Yechao Zhang , Kun Li , Guoming Zhang , Xiuzhen Cheng

Large Language Models (LLMs) are increasingly integrated into real-world applications via the Model Context Protocol (MCP), a universal open standard for connecting AI agents with data sources and external tools. While MCP enhances the…

Cryptography and Security · Computer Science 2026-02-13 Yixuan Yang , Cuifeng Gao , Daoyuan Wu , Yufan Chen , Yingjiu Li , Shuai Wang

The Model Context Protocol (MCP) is emerging as a common interface connecting large language models (LLMs) with external services. Remote deployments are becoming increasingly important as agents connect to user-linked online services, such…

Cryptography and Security · Computer Science 2026-05-22 Huijun Zhou , Xiaohan Zhang , Haozhe Zhang , Haoyang Zhang , Mi Zhang , Min Yang

To standardize interactions between LLM-based agents and their environments, the Model Context Protocol (MCP) was proposed and has since been widely adopted. However, integrating external tools expands the attack surface, exposing agents to…

Cryptography and Security · Computer Science 2026-01-13 Ruiqi Li , Zhiqiang Wang , Yunhao Yao , Xiang-Yang Li

The Model Context Protocol (MCP) standardizes tool use for LLM-based agents and enable third-party servers. This openness introduces a security misalignment: agents implicitly trust tools exposed by potentially untrusted MCP servers.…

Cryptography and Security · Computer Science 2026-02-25 Zhenhong Zhou , Yuanhe Zhang , Hongwei Cai , Moayad Aloqaily , Ouns Bouachir , Linsey Pang , Prakhar Mehrotra , Kun Wang , Qingsong Wen

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

Agentic AI systems built around large language models (LLMs) are moving away from closed, single-model frameworks and toward open ecosystems that connect a variety of agents, external tools, and resources. The Model Context Protocol (MCP)…

Cryptography and Security · Computer Science 2026-02-03 Xinyi Hou , Shenao Wang , Yifan Zhang , Ziluo Xue , Yanjie Zhao , Cai Fu , Haoyu Wang

The Model Context Protocol (MCP), introduced by Anthropic in November 2024 and now governed by the Linux Foundation's Agentic AI Foundation, has rapidly become the de facto standard for connecting large language model (LLM)-based agents to…

Cryptography and Security · Computer Science 2026-04-08 Nirajan Acharya , Gaurav Kumar Gupta

The Model Context Protocol (MCP) has rapidly become a de facto standard for connecting LLM-based agents with external tools via reusable MCP servers. In practice, however, server selection and onboarding rely heavily on free-text tool…

Software Engineering · Computer Science 2026-02-24 Peiran Wang , Ying Li , Yuqiang Sun , Chengwei Liu , Yang Liu , Yuan Tian

The Model Context Protocol (MCP) enables Large Language Models (LLMs) to interact with external tools via tool descriptors, thereby extending their capabilities for task execution, autonomous decision-making, and multi-agent coordination.…

Cryptography and Security · Computer Science 2026-05-22 Saeid Jamshidi , Arghavan Moradi Dakhel , Kawser Wazed Nafi , Foutse Khomh

While Large Language Models (LLMs) have achieved remarkable performance, they remain vulnerable to jailbreak. The integration of Large Language Models (LLMs) with external tools via protocols such as the Model Context Protocol (MCP)…

Cryptography and Security · Computer Science 2026-01-09 Wenpeng Xing , Zhonghao Qi , Yupeng Qin , Yilin Li , Caini Chang , Jiahui Yu , Changting Lin , Zhenzhen Xie , Meng Han

Large language models(LLMs) are increasingly integrated with external systems through the Model Context Protocol(MCP),which standardizes tool invocation and has rapidly become a backbone for LLM-powered applications. While this paradigm…

Cryptography and Security · Computer Science 2026-05-04 Shuli Zhao , Qinsheng Hou , Zihan Zhan , Yanhao Wang , Yuchong Xie , Yu Guo , Libo Chen , Shenghong Li , Zhi Xue

The Model Context Protocol (MCP) enables large language models to invoke external tools through natural-language descriptions, forming the foundation of many AI agent applications. However, MCP does not enforce consistency between…

Cryptography and Security · Computer Science 2026-02-04 Zhihao Li , Boyang Ma , Xuelong Dai , Minghui Xu , Yue Zhang , Biwei Yan , Kun Li

The Model Context Protocol (MCP) is a recently proposed interoperability standard that unifies how AI agents connect with external tools and data sources. By defining a set of common client-server message exchange clauses, MCP replaces…

Cryptography and Security · Computer Science 2026-03-12 Nanzi Yang , Weiheng Bai , Kangjie Lu

Tool calling has emerged as a critical capability for AI agents. In contrast to conventional tool calling frameworks that rely on static, provider-specific tool definitions, the Model Context Protocol (MCP) offers a unified interface to…

Large Language Models (LLMs) demonstrate strong capabilities in solving complex tasks when integrated with external tools. The Model Context Protocol (MCP) has become a standard interface for enabling such tool-based interactions. However,…

Cryptography and Security · Computer Science 2026-01-23 Jiayi Fu , Yuansen Zhang , Yinggui Wang

The rapid adoption of foundation models has significantly expanded the capabilities of software systems, enabling them to perform complex language, reasoning, and interaction tasks that were previously difficult to automate. However, this…

Software Engineering · Computer Science 2026-03-09 Mina Taraghi , Mohammad Mehdi Morovati , Foutse Khomh

The Model Context Protocol (MCP) is rapidly emerging as a pivotal open standard, designed to enhance agent-tool integration and interoperability, and is positioned to unlock a new era of powerful, interconnected, and genuinely utilitarian…

Computation and Language · Computer Science 2025-09-15 Zikang Guo , Benfeng Xu , Chiwei Zhu , Wentao Hong , Xiaorui Wang , Zhendong Mao