AgentDNS: A Root Domain Naming System for LLM Agents

The rapid evolution of Large Language Model (LLM) agents has highlighted critical challenges in cross-vendor service discovery, interoperability, and communication. Existing protocols like model context protocol and agent-to-agent protocol have made significant strides in standardizing interoperability between agents and tools, as well as communication among multi-agents. However, there remains a lack of standardized protocols and solutions for service discovery across different agent and tool vendors. In this paper, we propose AgentDNS, a root domain naming and service discovery system designed to enable LLM agents to autonomously discover, resolve, and securely invoke third-party agent and tool services across organizational and technological boundaries. Inspired by the principles of the traditional DNS, AgentDNS introduces a structured mechanism for service registration, semantic service discovery, secure invocation, and unified billing. We detail the architecture, core functionalities, and use cases of AgentDNS, demonstrating its potential to streamline multi-agent collaboration in real-world scenarios. The source code will be published onthis https URL.

@article{cui2025_2505.22368,
  title={ AgentDNS: A Root Domain Naming System for LLM Agents },
  author={ Enfang Cui and Yujun Cheng and Rui She and Dan Liu and Zhiyuan Liang and Minxin Guo and Tianzheng Li and Qian Wei and Wenjuan Xing and Zhijie Zhong },
  journal={arXiv preprint arXiv:2505.22368},
  year={ 2025 }
}