OptionalauthBearer token sent to the upstream server.
OptionalfetchFetch implementation used for upstream HTTP requests.
Optionalinit: RequestInitOptionalinit: RequestInitOptionalheadersExtra headers sent on every upstream request.
OptionalprotocolProtocol negotiation mode forwarded to @mcp-use/client.
OptionaltimeoutConnection timeout in milliseconds.
Upstream MCP endpoint URL.
HTTP connection settings accepted by MCPServer.proxy.