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Homelab Brief - An MCP Gateway: One Endpoint, Many Servers · Big Iron Radio

• 0:02
  Welcome to the Homelab Brief from Big Iron.
• 0:05
  Today, when to put a gateway in front of your MCP,
• 0:09
  server's the endpoint that lets one LLM reach many tools.
• 0:13
  Quick note, this is an AI voice drawn from a Big Iron guide.
• 0:17
  Links below.
• 0:19
  First, the threshold, so you don't overbuild.
• 0:22
  Three or more MCP servers, or more than one client machine,
• 0:27
  that's where a gateway starts paying for itself.
• 0:30
  Below that, just point your clients directly at the servers.
• 0:33
  Don't add a middle layer you don't need yet.
• 0:36
  When you do need aggregation, the right tool is a fast MCP-style proxy.
• 0:41
  It speaks MCP correctly on both sides,
• 0:44
  it handles tool discovery,
• 0:46
  and it supports per-client scoping,
• 0:48
  so a given client only sees the tools it's allowed to.
• 0:52
  That's the actual gateway.
• 0:54
  Don't confuse that with an open API adapter like McPoe.
• 0:58
  Those exist to manufacture a well-behaved MCP server
• 1:02
  out of a plain REST API they are for wrapping, not for aggregating.
• 1:07
  Different job entirely.
• 1:09
  And here's the trap.
• 1:11
  A plain reverse proxy can do TLS termination and course network
• 1:15
  gating in front of the gateway,
• 1:17
  but it cannot do per-tool filtering or namespace aggregation.
• 1:21
  So don't try to build gateway logic inside engine X or caddy config,
• 1:26
  you'll end up with something fragile that half works.
• 1:29
  One security consequence to plan for.
• 1:32
  The gateway becomes your highest value credential store,
• 1:35
  it holds the keys to every server behind it.
• 1:38
  So isolate it, lock it down,
• 1:40
  and treat it like the crown jewels because it is.
• 1:43
  The full patterns in the show notes.
• 1:46
  That's your brief.