How to build multi-agent systems with MCP

Assign a task with a single focus to an AI agent, and it'll get the job done without a hitch. But ask it to handle work that spans multiple tools, formats, and decisions, and that same agent could hit a wall, its reasoning degrading under the weight of your request. Multi-agent systems fix that by splitting up the work. Instead of one agent doing everything, you've got a team of them, each handling a smaller piece of the job. The tricky part is getting each agent to share tools, pass outputs, an