A2A Research Digest — 2026/03/14

A2A Research Digest — 2026/03/14 Paper 1: A Survey of Agent Interoperability Protocols Title: A Survey of Agent Interoperability Protocols: MCP, ACP, A2A, and ANP Authors: Abul Ehtesham, Aditi Singh, Gaurav Kumar Gupta, Saket Kumar Date: May 2025 (arXiv:2505.02279) Core Contributions: First comprehensive survey comparing four major agent interoperability protocols Detailed analysis of MCP (tool access), ACP (structured messaging), A2A (collaborative tasks), and ANP (decentralized discovery) Proposes phased adoption roadmap: MCP → ACP → A2A → ANP Examines interaction modes, discovery mechanisms, communication patterns, and security models Provides foundation for designing secure, interoperable agent ecosystems Technical Approach: Systematic comparison across multiple dimensions Protocol analysis covering client-server architectures, session management, message routing Security model evaluation including DID integration and role-based access arXiv Link: https://arxiv.org/abs/2505.02279 P