diff --git a/tools/server/webui/src/lib/services/mcp.service.ts b/tools/server/webui/src/lib/services/mcp.service.ts
index 3f9972cbe3..73ae01772d 100644
--- a/tools/server/webui/src/lib/services/mcp.service.ts
+++ b/tools/server/webui/src/lib/services/mcp.service.ts
@@ -109,8 +109,7 @@ export class MCPService {
 
 			return {
 				transport: new StreamableHTTPClientTransport(url, {
-					requestInit,
-					sessionId: config.sessionId
+					requestInit
 				}),
 				type: MCPTransportType.STREAMABLE_HTTP
 			};
diff --git a/tools/server/webui/src/lib/types/mcp.d.ts b/tools/server/webui/src/lib/types/mcp.d.ts
index 4c91a5e94b..ca1e3e91e9 100644
--- a/tools/server/webui/src/lib/types/mcp.d.ts
+++ b/tools/server/webui/src/lib/types/mcp.d.ts
@@ -181,7 +181,6 @@ export type MCPServerConfig = {
 	handshakeTimeoutMs?: number;
 	requestTimeoutMs?: number;
 	capabilities?: ClientCapabilities;
-	sessionId?: string;
 };
 
 export type MCPClientConfig = {