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MCP Router: enabled

Three enabled properties control different layers:

Full propertyShipped defaultBehavior
mcp-router.enabledtrueBuilds and registers the MCP runtime. When false, the mcp handler does not match requests.
mcp-router.protocols.legacy.enabledtrueEnables session-oriented MCP. It must remain true in the current dual-profile release.
mcp-router.protocols.stateless.enabledtrueEnables the 2026-07-28 sessionless profile.
 
enabled: true
protocols:
  legacy:
    enabled: true
  stateless:
    enabled: true

The mcp handler must also appear in the applicable handler.yml chain. A false top-level flag or an inactive handler disables routing. Setting legacy to false rejects configuration. If stateless is enabled, its versions list must be non-empty. Although the Rust struct’s bare fallback leaves stateless off, the shipped light-gateway template explicitly defaults it to true.