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Discussion on: What Is MCP (Model Context Protocol) and Why It Needs a Gateway in Production — A Practical Guide for AI Engineers

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Valentin Monteiro

Approval workflows catch the operations you anticipated. They don't catch an agent looping on the same tool because its reasoning got stuck. The gateway is also the right place for cost caps per run and circuit breakers per tool, otherwise the first surprise bill teaches you the lesson.

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Hadil Ben Abdallah

Exactly!
Approval flows only cover what you expect; the real pain is when agents go off-script. Cost caps and circuit breakers at the gateway level honestly feel non-negotiable once you’ve seen it happen.