Agent Gateways (AI, LLM and MCP Gateways)

An agent gateway is the one network hop every model call, MCP tool call and agent-to-agent request passes through, so identity, per-tool authorization, rate limits, cost metering and audit happen in one place instead of inside each agent. It decides whether a customer's security team can approve agents at all, and it is easy to build wrong by treating it as a reverse proxy.