diff --git a/clients/client-rds-data/RdsDataServiceClient.ts b/clients/client-rds-data/RdsDataServiceClient.ts
index 6935a7f1ad82..8ed6878d89aa 100644
--- a/clients/client-rds-data/RdsDataServiceClient.ts
+++ b/clients/client-rds-data/RdsDataServiceClient.ts
@@ -55,7 +55,7 @@ import {
   Client as SmithyClient,
   SmithyResolvedConfiguration
 } from "@aws-sdk/smithy-client";
-import { HttpOptions as __HttpOptions } from "@aws-sdk/types";
+import { HttpHandlerOptions as __HttpHandlerOptions } from "@aws-sdk/types";
 
 export type ServiceInputTypes =
   | RollbackTransactionRequest
@@ -158,7 +158,7 @@ export type RdsDataServiceConfig = RDSDataRuntimeDependencies &
   UserAgentInputConfig;
 
 export type RdsDataServiceResolvedConfig = SmithyResolvedConfiguration<
-  __HttpOptions
+  __HttpHandlerOptions
 > &
   Required<RDSDataRuntimeDependencies> &
   AwsAuthResolvedConfig &
@@ -168,7 +168,7 @@ export type RdsDataServiceResolvedConfig = SmithyResolvedConfiguration<
   UserAgentResolvedConfig;
 
 export class RdsDataService extends SmithyClient<
-  __HttpOptions,
+  __HttpHandlerOptions,
   ServiceInputTypes,
   ServiceOutputTypes,
   RdsDataServiceResolvedConfig
diff --git a/clients/client-rds-data/commands/ExecuteStatementCommand.ts b/clients/client-rds-data/commands/ExecuteStatementCommand.ts
index 8ee83794f612..e024bdb93f00 100644
--- a/clients/client-rds-data/commands/ExecuteStatementCommand.ts
+++ b/clients/client-rds-data/commands/ExecuteStatementCommand.ts
@@ -1,7 +1,7 @@
 import { Command } from "@aws-sdk/smithy-client";
 import { getSerdePlugin } from "@aws-sdk/middleware-serde";
 import {
-  HttpOptions,
+  HttpHandlerOptions as __HttpHandlerOptions,
   Handler,
   HandlerExecutionContext,
   FinalizeHandlerArguments,
@@ -32,7 +32,7 @@ export class ExecuteStatementCommand extends Command<
   resolveMiddleware(
     clientStack: MiddlewareStack<ServiceInputTypes, ServiceOutputTypes>,
     configuration: RdsDataServiceResolvedConfig,
-    options?: HttpOptions
+    options?: __HttpHandlerOptions
   ): Handler<ExecuteStatementRequest, ExecuteStatementResponse> {
     const { requestHandler } = configuration;
 
diff --git a/packages/smithy-client/src/client.ts b/packages/smithy-client/src/client.ts
index 7d4fc9620b89..827e03bd2608 100644
--- a/packages/smithy-client/src/client.ts
+++ b/packages/smithy-client/src/client.ts
@@ -8,6 +8,8 @@ import {
 
 export interface SmithyConfiguration<HandlerOptions> {
   requestHandler: RequestHandler<any, any, HandlerOptions>;
+  readonly apiVersion: string;
+  readonly protocol: string;
 }
 
 export type SmithyResolvedConfiguration<HandlerOptions> = SmithyConfiguration<