Definition
An intermediary deployment component that fronts one or more MCP servers and centralizes concerns such as routing, authentication, policy, limits, or audit.
Distinguish it from nearby terms
An MCP gateway is a deployment pattern, not a required role in the core MCP architecture. Products use the name differently, so the actual responsibilities and trust boundary must be stated.
Check your understanding
A gateway can simplify control and observability, but it also creates a concentrated dependency and potential security boundary.