Agentic Protocols in Multi‑Agent Systems: MCP, A2A and Emerging Interaction Models
In this eBook, you’ll find discussion around:
The differences between MCP and A2A, and the architectural problems each protocol is designed to solve.
The challenges of communication, coordination, security, and state management in multi-agent systems.
The practical considerations for designing agentic systems that can scale, adapt, and remain maintainable over time.
Written by Bartosz Słysz, Senior Software Developer and member of the Caspian One community, this eBook examines one of the most important emerging areas in AI system design: the protocols that enable agents to interact with tools, data, and each other.
As multi-agent systems move from experimentation into production, engineering teams face new challenges around reliability, interoperability, governance, and long-term architecture.
Through a detailed exploration of MCP and A2A, Bartosz explains how different protocol models shape system behaviour, the trade-offs they introduce, and what teams should consider when building agentic systems at scale.
Whether you're evaluating protocol choices for the first time or looking to deepen your understanding of the evolving agentic ecosystem, this paper provides a practical framework for approaching the next generation of software architecture.
