Interface Nexus\Mcp\Core\Transport\ParameterHeaderMirroringInterface

Marks a transport that mirrors x-mcp-header tool parameters into request headers. The obligations the spec places on a client only bind on such a transport: it must exclude a tool whose declarations violate the scanner constraints from its tools/list result, and it must mirror the annotated arguments of a tools/call into Mcp-Param-{Name} headers. A transport without the marker (stdio) may ignore the annotations entirely, so the client leaves its tool listing untouched.