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7/6/2026
MCP and A2A: Two Protocols Every Multi-Agent Dev Should Know

MCP and A2A: Two Protocols Every Multi-Agent Dev Should Know

Short summary

MCP (Model Context Protocol) standardizes how individual agents connect to tools and data sources, while A2A (Agent-to-Agent) handles discovery and routing between multiple agents. The two-layer architecture—MCP for vertical integration and A2A for horizontal coordination—is becoming essential for enterprise multi-agent systems. Start with MCP for single-agent work; design for both layers from day one if building multi-agent orchestration.

  • •MCP handles one agent to many tools; A2A handles many agents discovering each other
  • •Two-layer architecture prevents common mistakes like using MCP for agent routing or hardcoding A2A connections
  • •Anthropic (MCP) and Google (A2A) are driving adoption; governance remains a consideration for enterprise deployments

Generated with AI, which can make mistakes.

#ai-agents#ai-tools#industry-adoption#market-trend
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