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In-depth guides for people building AI systems. Written from real client work, checked against the official specs, and updated when things change.

25 Oct 2026, 7 min readMCP vs A2A: which one does your agent actually need?MCP connects an agent to its tools and data. A2A connects agents to each other. Here is how each works in late 2026, how they fit together, and a simple way to decide which one your project needs.