MCP vs A2A vs ACP: Understanding Agent Protocol Roles
blaizedsouza · x · 2026-08-20
This post breaks down three key AI agent protocols: MCP connects agents to tools and data (APIs, files); A2A enables communication between independent agents (discovery, delegation, coordination); ACP, a REST-based approach, has merged into A2A.
The key takeaway: MCP and A2A are complementary. Agents use MCP for tool access and A2A for coordination.
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