diff --git a/.changeset/large-badgers-cheer.md b/.changeset/large-badgers-cheer.md
new file mode 100644
index 00000000000..b15033610a7
--- /dev/null
+++ b/.changeset/large-badgers-cheer.md
@@ -0,0 +1,6 @@
+---
+"@smithy/types": minor
+"@smithy/core": minor
+---
+
+add MetricsRecorder support to clients: a call-site recorder passed to client.send is placed on the handler execution context for middleware to consume
diff --git a/packages/core/src/submodules/client/smithy-client/command.spec.ts b/packages/core/src/submodules/client/smithy-client/command.spec.ts
index 0651cfcbd50..e5bbb08fb97 100644
--- a/packages/core/src/submodules/client/smithy-client/command.spec.ts
+++ b/packages/core/src/submodules/client/smithy-client/command.spec.ts
@@ -90,4 +90,32 @@ describe(Command.name, () => {
       requestTimeout: 5000,
     });
   });
+
+  it("places the call-site recorder on the handler execution context", async () => {
+    let capturedContext: any;
+
+    class MyCommand extends Command.classBuilder<any, any, any, any, any>()
+      .m(function () {
+        return [];
+      })
+      .s("MyClient", "MyOp", {})
+      .n("MyClient", "MyOp")
+      .f()
+      .ser(async (_) => ({ ..._, headers: {}, method: "POST", protocol: "https:", hostname: "localhost", path: "/" }))
+      .de(async (_) => ({ $metadata: {} }))
+      .build() {}
+
+    const recorder = { addCount: vi.fn() };
+    const cmd = new MyCommand({});
+    cmd.resolveMiddleware(
+      { concat: () => ({ resolve: (fn: any, ctx: any) => ((capturedContext = ctx), fn) }) } as any,
+      {
+        logger: {} as any,
+        requestHandler: { handle: vi.fn().mockResolvedValue({ response: {} }) },
+      },
+      { recorder }
+    );
+
+    expect(capturedContext.recorder).toBe(recorder);
+  });
 });
diff --git a/packages/core/src/submodules/client/smithy-client/command.ts b/packages/core/src/submodules/client/smithy-client/command.ts
index c7d885f8a3b..a0c7ccfb3fd 100644
--- a/packages/core/src/submodules/client/smithy-client/command.ts
+++ b/packages/core/src/submodules/client/smithy-client/command.ts
@@ -91,6 +91,7 @@ export abstract class Command<
         ...smithyContext,
       },
       ...additionalContext,
+      recorder: options?.recorder,
     };
     const { requestHandler } = configuration;
     let requestOptions = options ?? {};
diff --git a/packages/types/src/middleware.ts b/packages/types/src/middleware.ts
index f6933158795..e74ff5c7e3b 100644
--- a/packages/types/src/middleware.ts
+++ b/packages/types/src/middleware.ts
@@ -4,6 +4,7 @@ import type { Command } from "./command";
 import type { EndpointV2 } from "./endpoint";
 import type { SmithyFeatures } from "./feature-ids";
 import type { Logger } from "./logger";
+import type { MetricsRecorder } from "./metrics";
 import type { UserAgent } from "./util";
 
 /**
@@ -584,6 +585,14 @@ export interface HandlerExecutionContext {
     [key: string]: unknown;
   };
 
+  /**
+   * A per-request {@link MetricsRecorder} supplied at the `client.send(command, { recorder })`
+   * call site. When present, a metrics middleware records into this recorder instead of one
+   * minted from a factory, letting a caller (e.g. a server handler) fold the client's request
+   * metrics into its own.
+   */
+  recorder?: MetricsRecorder<any>;
+
   /**
    * Set by some operations which instructs the retry behavior to backoff
    * after a failed request even when no further retry (of the same request) is expected.
diff --git a/private/my-local-model-schema/src/XYZService.ts b/private/my-local-model-schema/src/XYZService.ts
index 970f569f923..f8b8391627d 100644
--- a/private/my-local-model-schema/src/XYZService.ts
+++ b/private/my-local-model-schema/src/XYZService.ts
@@ -2,6 +2,7 @@
 import { type WaiterResult, createAggregatedClient } from "@smithy/core/client";
 import type {
   HttpHandlerOptions as __HttpHandlerOptions,
+  MetricsRecorder as __MetricsRecorder,
   PaginationConfiguration,
   Paginator,
   WaiterConfiguration,
@@ -58,13 +59,20 @@ const waiters = {
   waitUntilNumbersWhatDoTheyDoAnyway,
 };
 
+/**
+ * @public
+ */
+export interface XYZServiceRequestOptions extends __HttpHandlerOptions {
+  recorder?: __MetricsRecorder<any>;
+}
+
 export interface XYZService {
   /**
    * @see {@link HttpLabelCommandCommand}
    */
   httpLabelCommand(
     args: HttpLabelCommandCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<HttpLabelCommandCommandOutput>;
   httpLabelCommand(
     args: HttpLabelCommandCommandInput,
@@ -72,7 +80,7 @@ export interface XYZService {
   ): void;
   httpLabelCommand(
     args: HttpLabelCommandCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: HttpLabelCommandCommandOutput) => void
   ): void;
 
@@ -82,7 +90,7 @@ export interface XYZService {
   camelCaseOperation(): Promise<CamelCaseOperationCommandOutput>;
   camelCaseOperation(
     args: CamelCaseOperationCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<CamelCaseOperationCommandOutput>;
   camelCaseOperation(
     args: CamelCaseOperationCommandInput,
@@ -90,7 +98,7 @@ export interface XYZService {
   ): void;
   camelCaseOperation(
     args: CamelCaseOperationCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: CamelCaseOperationCommandOutput) => void
   ): void;
 
@@ -100,7 +108,7 @@ export interface XYZService {
   getNumbers(): Promise<GetNumbersCommandOutput>;
   getNumbers(
     args: GetNumbersCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<GetNumbersCommandOutput>;
   getNumbers(
     args: GetNumbersCommandInput,
@@ -108,7 +116,7 @@ export interface XYZService {
   ): void;
   getNumbers(
     args: GetNumbersCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: GetNumbersCommandOutput) => void
   ): void;
 
@@ -117,7 +125,7 @@ export interface XYZService {
    */
   hostPrefixOperation(
     args: HostPrefixOperationCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<HostPrefixOperationCommandOutput>;
   hostPrefixOperation(
     args: HostPrefixOperationCommandInput,
@@ -125,7 +133,7 @@ export interface XYZService {
   ): void;
   hostPrefixOperation(
     args: HostPrefixOperationCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: HostPrefixOperationCommandOutput) => void
   ): void;
 
@@ -135,7 +143,7 @@ export interface XYZService {
   tradeEventStream(): Promise<TradeEventStreamCommandOutput>;
   tradeEventStream(
     args: TradeEventStreamCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<TradeEventStreamCommandOutput>;
   tradeEventStream(
     args: TradeEventStreamCommandInput,
@@ -143,7 +151,7 @@ export interface XYZService {
   ): void;
   tradeEventStream(
     args: TradeEventStreamCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: TradeEventStreamCommandOutput) => void
   ): void;
 
diff --git a/private/my-local-model/src/XYZService.ts b/private/my-local-model/src/XYZService.ts
index 970f569f923..f8b8391627d 100644
--- a/private/my-local-model/src/XYZService.ts
+++ b/private/my-local-model/src/XYZService.ts
@@ -2,6 +2,7 @@
 import { type WaiterResult, createAggregatedClient } from "@smithy/core/client";
 import type {
   HttpHandlerOptions as __HttpHandlerOptions,
+  MetricsRecorder as __MetricsRecorder,
   PaginationConfiguration,
   Paginator,
   WaiterConfiguration,
@@ -58,13 +59,20 @@ const waiters = {
   waitUntilNumbersWhatDoTheyDoAnyway,
 };
 
+/**
+ * @public
+ */
+export interface XYZServiceRequestOptions extends __HttpHandlerOptions {
+  recorder?: __MetricsRecorder<any>;
+}
+
 export interface XYZService {
   /**
    * @see {@link HttpLabelCommandCommand}
    */
   httpLabelCommand(
     args: HttpLabelCommandCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<HttpLabelCommandCommandOutput>;
   httpLabelCommand(
     args: HttpLabelCommandCommandInput,
@@ -72,7 +80,7 @@ export interface XYZService {
   ): void;
   httpLabelCommand(
     args: HttpLabelCommandCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: HttpLabelCommandCommandOutput) => void
   ): void;
 
@@ -82,7 +90,7 @@ export interface XYZService {
   camelCaseOperation(): Promise<CamelCaseOperationCommandOutput>;
   camelCaseOperation(
     args: CamelCaseOperationCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<CamelCaseOperationCommandOutput>;
   camelCaseOperation(
     args: CamelCaseOperationCommandInput,
@@ -90,7 +98,7 @@ export interface XYZService {
   ): void;
   camelCaseOperation(
     args: CamelCaseOperationCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: CamelCaseOperationCommandOutput) => void
   ): void;
 
@@ -100,7 +108,7 @@ export interface XYZService {
   getNumbers(): Promise<GetNumbersCommandOutput>;
   getNumbers(
     args: GetNumbersCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<GetNumbersCommandOutput>;
   getNumbers(
     args: GetNumbersCommandInput,
@@ -108,7 +116,7 @@ export interface XYZService {
   ): void;
   getNumbers(
     args: GetNumbersCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: GetNumbersCommandOutput) => void
   ): void;
 
@@ -117,7 +125,7 @@ export interface XYZService {
    */
   hostPrefixOperation(
     args: HostPrefixOperationCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<HostPrefixOperationCommandOutput>;
   hostPrefixOperation(
     args: HostPrefixOperationCommandInput,
@@ -125,7 +133,7 @@ export interface XYZService {
   ): void;
   hostPrefixOperation(
     args: HostPrefixOperationCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: HostPrefixOperationCommandOutput) => void
   ): void;
 
@@ -135,7 +143,7 @@ export interface XYZService {
   tradeEventStream(): Promise<TradeEventStreamCommandOutput>;
   tradeEventStream(
     args: TradeEventStreamCommandInput,
-    options?: __HttpHandlerOptions
+    options?: XYZServiceRequestOptions
   ): Promise<TradeEventStreamCommandOutput>;
   tradeEventStream(
     args: TradeEventStreamCommandInput,
@@ -143,7 +151,7 @@ export interface XYZService {
   ): void;
   tradeEventStream(
     args: TradeEventStreamCommandInput,
-    options: __HttpHandlerOptions,
+    options: XYZServiceRequestOptions,
     cb: (err: any, data?: TradeEventStreamCommandOutput) => void
   ): void;
 
diff --git a/private/smithy-rpcv2-cbor-schema/src/RpcV2Protocol.ts b/private/smithy-rpcv2-cbor-schema/src/RpcV2Protocol.ts
index b1d7c3955eb..86c0bd805c2 100644
--- a/private/smithy-rpcv2-cbor-schema/src/RpcV2Protocol.ts
+++ b/private/smithy-rpcv2-cbor-schema/src/RpcV2Protocol.ts
@@ -1,6 +1,6 @@
 // smithy-typescript generated code
 import { createAggregatedClient } from "@smithy/core/client";
-import type { HttpHandlerOptions as __HttpHandlerOptions } from "@smithy/types";
+import type { HttpHandlerOptions as __HttpHandlerOptions, MetricsRecorder as __MetricsRecorder } from "@smithy/types";
 
 import {
   type EmptyInputOutputCommandInput,
@@ -81,6 +81,13 @@ const commands = {
   SparseNullsOperationCommand,
 };
 
+/**
+ * @public
+ */
+export interface RpcV2ProtocolRequestOptions extends __HttpHandlerOptions {
+  recorder?: __MetricsRecorder<any>;
+}
+
 export interface RpcV2Protocol {
   /**
    * @see {@link EmptyInputOutputCommand}
@@ -88,7 +95,7 @@ export interface RpcV2Protocol {
   emptyInputOutput(): Promise<EmptyInputOutputCommandOutput>;
   emptyInputOutput(
     args: EmptyInputOutputCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<EmptyInputOutputCommandOutput>;
   emptyInputOutput(
     args: EmptyInputOutputCommandInput,
@@ -96,7 +103,7 @@ export interface RpcV2Protocol {
   ): void;
   emptyInputOutput(
     args: EmptyInputOutputCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: EmptyInputOutputCommandOutput) => void
   ): void;
 
@@ -106,7 +113,7 @@ export interface RpcV2Protocol {
   float16(): Promise<Float16CommandOutput>;
   float16(
     args: Float16CommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<Float16CommandOutput>;
   float16(
     args: Float16CommandInput,
@@ -114,7 +121,7 @@ export interface RpcV2Protocol {
   ): void;
   float16(
     args: Float16CommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: Float16CommandOutput) => void
   ): void;
 
@@ -124,7 +131,7 @@ export interface RpcV2Protocol {
   fractionalSeconds(): Promise<FractionalSecondsCommandOutput>;
   fractionalSeconds(
     args: FractionalSecondsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<FractionalSecondsCommandOutput>;
   fractionalSeconds(
     args: FractionalSecondsCommandInput,
@@ -132,7 +139,7 @@ export interface RpcV2Protocol {
   ): void;
   fractionalSeconds(
     args: FractionalSecondsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: FractionalSecondsCommandOutput) => void
   ): void;
 
@@ -142,7 +149,7 @@ export interface RpcV2Protocol {
   greetingWithErrors(): Promise<GreetingWithErrorsCommandOutput>;
   greetingWithErrors(
     args: GreetingWithErrorsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<GreetingWithErrorsCommandOutput>;
   greetingWithErrors(
     args: GreetingWithErrorsCommandInput,
@@ -150,7 +157,7 @@ export interface RpcV2Protocol {
   ): void;
   greetingWithErrors(
     args: GreetingWithErrorsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: GreetingWithErrorsCommandOutput) => void
   ): void;
 
@@ -160,7 +167,7 @@ export interface RpcV2Protocol {
   noInputOutput(): Promise<NoInputOutputCommandOutput>;
   noInputOutput(
     args: NoInputOutputCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<NoInputOutputCommandOutput>;
   noInputOutput(
     args: NoInputOutputCommandInput,
@@ -168,7 +175,7 @@ export interface RpcV2Protocol {
   ): void;
   noInputOutput(
     args: NoInputOutputCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: NoInputOutputCommandOutput) => void
   ): void;
 
@@ -178,7 +185,7 @@ export interface RpcV2Protocol {
   operationWithDefaults(): Promise<OperationWithDefaultsCommandOutput>;
   operationWithDefaults(
     args: OperationWithDefaultsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<OperationWithDefaultsCommandOutput>;
   operationWithDefaults(
     args: OperationWithDefaultsCommandInput,
@@ -186,7 +193,7 @@ export interface RpcV2Protocol {
   ): void;
   operationWithDefaults(
     args: OperationWithDefaultsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: OperationWithDefaultsCommandOutput) => void
   ): void;
 
@@ -196,7 +203,7 @@ export interface RpcV2Protocol {
   optionalInputOutput(): Promise<OptionalInputOutputCommandOutput>;
   optionalInputOutput(
     args: OptionalInputOutputCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<OptionalInputOutputCommandOutput>;
   optionalInputOutput(
     args: OptionalInputOutputCommandInput,
@@ -204,7 +211,7 @@ export interface RpcV2Protocol {
   ): void;
   optionalInputOutput(
     args: OptionalInputOutputCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: OptionalInputOutputCommandOutput) => void
   ): void;
 
@@ -214,7 +221,7 @@ export interface RpcV2Protocol {
   recursiveShapes(): Promise<RecursiveShapesCommandOutput>;
   recursiveShapes(
     args: RecursiveShapesCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RecursiveShapesCommandOutput>;
   recursiveShapes(
     args: RecursiveShapesCommandInput,
@@ -222,7 +229,7 @@ export interface RpcV2Protocol {
   ): void;
   recursiveShapes(
     args: RecursiveShapesCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RecursiveShapesCommandOutput) => void
   ): void;
 
@@ -232,7 +239,7 @@ export interface RpcV2Protocol {
   rpcV2CborDenseMaps(): Promise<RpcV2CborDenseMapsCommandOutput>;
   rpcV2CborDenseMaps(
     args: RpcV2CborDenseMapsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RpcV2CborDenseMapsCommandOutput>;
   rpcV2CborDenseMaps(
     args: RpcV2CborDenseMapsCommandInput,
@@ -240,7 +247,7 @@ export interface RpcV2Protocol {
   ): void;
   rpcV2CborDenseMaps(
     args: RpcV2CborDenseMapsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RpcV2CborDenseMapsCommandOutput) => void
   ): void;
 
@@ -250,7 +257,7 @@ export interface RpcV2Protocol {
   rpcV2CborLists(): Promise<RpcV2CborListsCommandOutput>;
   rpcV2CborLists(
     args: RpcV2CborListsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RpcV2CborListsCommandOutput>;
   rpcV2CborLists(
     args: RpcV2CborListsCommandInput,
@@ -258,7 +265,7 @@ export interface RpcV2Protocol {
   ): void;
   rpcV2CborLists(
     args: RpcV2CborListsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RpcV2CborListsCommandOutput) => void
   ): void;
 
@@ -268,7 +275,7 @@ export interface RpcV2Protocol {
   rpcV2CborSparseMaps(): Promise<RpcV2CborSparseMapsCommandOutput>;
   rpcV2CborSparseMaps(
     args: RpcV2CborSparseMapsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RpcV2CborSparseMapsCommandOutput>;
   rpcV2CborSparseMaps(
     args: RpcV2CborSparseMapsCommandInput,
@@ -276,7 +283,7 @@ export interface RpcV2Protocol {
   ): void;
   rpcV2CborSparseMaps(
     args: RpcV2CborSparseMapsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RpcV2CborSparseMapsCommandOutput) => void
   ): void;
 
@@ -286,7 +293,7 @@ export interface RpcV2Protocol {
   simpleScalarProperties(): Promise<SimpleScalarPropertiesCommandOutput>;
   simpleScalarProperties(
     args: SimpleScalarPropertiesCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<SimpleScalarPropertiesCommandOutput>;
   simpleScalarProperties(
     args: SimpleScalarPropertiesCommandInput,
@@ -294,7 +301,7 @@ export interface RpcV2Protocol {
   ): void;
   simpleScalarProperties(
     args: SimpleScalarPropertiesCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: SimpleScalarPropertiesCommandOutput) => void
   ): void;
 
@@ -304,7 +311,7 @@ export interface RpcV2Protocol {
   sparseNullsOperation(): Promise<SparseNullsOperationCommandOutput>;
   sparseNullsOperation(
     args: SparseNullsOperationCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<SparseNullsOperationCommandOutput>;
   sparseNullsOperation(
     args: SparseNullsOperationCommandInput,
@@ -312,7 +319,7 @@ export interface RpcV2Protocol {
   ): void;
   sparseNullsOperation(
     args: SparseNullsOperationCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: SparseNullsOperationCommandOutput) => void
   ): void;
 }
diff --git a/private/smithy-rpcv2-cbor/src/RpcV2Protocol.ts b/private/smithy-rpcv2-cbor/src/RpcV2Protocol.ts
index b1d7c3955eb..86c0bd805c2 100644
--- a/private/smithy-rpcv2-cbor/src/RpcV2Protocol.ts
+++ b/private/smithy-rpcv2-cbor/src/RpcV2Protocol.ts
@@ -1,6 +1,6 @@
 // smithy-typescript generated code
 import { createAggregatedClient } from "@smithy/core/client";
-import type { HttpHandlerOptions as __HttpHandlerOptions } from "@smithy/types";
+import type { HttpHandlerOptions as __HttpHandlerOptions, MetricsRecorder as __MetricsRecorder } from "@smithy/types";
 
 import {
   type EmptyInputOutputCommandInput,
@@ -81,6 +81,13 @@ const commands = {
   SparseNullsOperationCommand,
 };
 
+/**
+ * @public
+ */
+export interface RpcV2ProtocolRequestOptions extends __HttpHandlerOptions {
+  recorder?: __MetricsRecorder<any>;
+}
+
 export interface RpcV2Protocol {
   /**
    * @see {@link EmptyInputOutputCommand}
@@ -88,7 +95,7 @@ export interface RpcV2Protocol {
   emptyInputOutput(): Promise<EmptyInputOutputCommandOutput>;
   emptyInputOutput(
     args: EmptyInputOutputCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<EmptyInputOutputCommandOutput>;
   emptyInputOutput(
     args: EmptyInputOutputCommandInput,
@@ -96,7 +103,7 @@ export interface RpcV2Protocol {
   ): void;
   emptyInputOutput(
     args: EmptyInputOutputCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: EmptyInputOutputCommandOutput) => void
   ): void;
 
@@ -106,7 +113,7 @@ export interface RpcV2Protocol {
   float16(): Promise<Float16CommandOutput>;
   float16(
     args: Float16CommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<Float16CommandOutput>;
   float16(
     args: Float16CommandInput,
@@ -114,7 +121,7 @@ export interface RpcV2Protocol {
   ): void;
   float16(
     args: Float16CommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: Float16CommandOutput) => void
   ): void;
 
@@ -124,7 +131,7 @@ export interface RpcV2Protocol {
   fractionalSeconds(): Promise<FractionalSecondsCommandOutput>;
   fractionalSeconds(
     args: FractionalSecondsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<FractionalSecondsCommandOutput>;
   fractionalSeconds(
     args: FractionalSecondsCommandInput,
@@ -132,7 +139,7 @@ export interface RpcV2Protocol {
   ): void;
   fractionalSeconds(
     args: FractionalSecondsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: FractionalSecondsCommandOutput) => void
   ): void;
 
@@ -142,7 +149,7 @@ export interface RpcV2Protocol {
   greetingWithErrors(): Promise<GreetingWithErrorsCommandOutput>;
   greetingWithErrors(
     args: GreetingWithErrorsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<GreetingWithErrorsCommandOutput>;
   greetingWithErrors(
     args: GreetingWithErrorsCommandInput,
@@ -150,7 +157,7 @@ export interface RpcV2Protocol {
   ): void;
   greetingWithErrors(
     args: GreetingWithErrorsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: GreetingWithErrorsCommandOutput) => void
   ): void;
 
@@ -160,7 +167,7 @@ export interface RpcV2Protocol {
   noInputOutput(): Promise<NoInputOutputCommandOutput>;
   noInputOutput(
     args: NoInputOutputCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<NoInputOutputCommandOutput>;
   noInputOutput(
     args: NoInputOutputCommandInput,
@@ -168,7 +175,7 @@ export interface RpcV2Protocol {
   ): void;
   noInputOutput(
     args: NoInputOutputCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: NoInputOutputCommandOutput) => void
   ): void;
 
@@ -178,7 +185,7 @@ export interface RpcV2Protocol {
   operationWithDefaults(): Promise<OperationWithDefaultsCommandOutput>;
   operationWithDefaults(
     args: OperationWithDefaultsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<OperationWithDefaultsCommandOutput>;
   operationWithDefaults(
     args: OperationWithDefaultsCommandInput,
@@ -186,7 +193,7 @@ export interface RpcV2Protocol {
   ): void;
   operationWithDefaults(
     args: OperationWithDefaultsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: OperationWithDefaultsCommandOutput) => void
   ): void;
 
@@ -196,7 +203,7 @@ export interface RpcV2Protocol {
   optionalInputOutput(): Promise<OptionalInputOutputCommandOutput>;
   optionalInputOutput(
     args: OptionalInputOutputCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<OptionalInputOutputCommandOutput>;
   optionalInputOutput(
     args: OptionalInputOutputCommandInput,
@@ -204,7 +211,7 @@ export interface RpcV2Protocol {
   ): void;
   optionalInputOutput(
     args: OptionalInputOutputCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: OptionalInputOutputCommandOutput) => void
   ): void;
 
@@ -214,7 +221,7 @@ export interface RpcV2Protocol {
   recursiveShapes(): Promise<RecursiveShapesCommandOutput>;
   recursiveShapes(
     args: RecursiveShapesCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RecursiveShapesCommandOutput>;
   recursiveShapes(
     args: RecursiveShapesCommandInput,
@@ -222,7 +229,7 @@ export interface RpcV2Protocol {
   ): void;
   recursiveShapes(
     args: RecursiveShapesCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RecursiveShapesCommandOutput) => void
   ): void;
 
@@ -232,7 +239,7 @@ export interface RpcV2Protocol {
   rpcV2CborDenseMaps(): Promise<RpcV2CborDenseMapsCommandOutput>;
   rpcV2CborDenseMaps(
     args: RpcV2CborDenseMapsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RpcV2CborDenseMapsCommandOutput>;
   rpcV2CborDenseMaps(
     args: RpcV2CborDenseMapsCommandInput,
@@ -240,7 +247,7 @@ export interface RpcV2Protocol {
   ): void;
   rpcV2CborDenseMaps(
     args: RpcV2CborDenseMapsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RpcV2CborDenseMapsCommandOutput) => void
   ): void;
 
@@ -250,7 +257,7 @@ export interface RpcV2Protocol {
   rpcV2CborLists(): Promise<RpcV2CborListsCommandOutput>;
   rpcV2CborLists(
     args: RpcV2CborListsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RpcV2CborListsCommandOutput>;
   rpcV2CborLists(
     args: RpcV2CborListsCommandInput,
@@ -258,7 +265,7 @@ export interface RpcV2Protocol {
   ): void;
   rpcV2CborLists(
     args: RpcV2CborListsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RpcV2CborListsCommandOutput) => void
   ): void;
 
@@ -268,7 +275,7 @@ export interface RpcV2Protocol {
   rpcV2CborSparseMaps(): Promise<RpcV2CborSparseMapsCommandOutput>;
   rpcV2CborSparseMaps(
     args: RpcV2CborSparseMapsCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<RpcV2CborSparseMapsCommandOutput>;
   rpcV2CborSparseMaps(
     args: RpcV2CborSparseMapsCommandInput,
@@ -276,7 +283,7 @@ export interface RpcV2Protocol {
   ): void;
   rpcV2CborSparseMaps(
     args: RpcV2CborSparseMapsCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: RpcV2CborSparseMapsCommandOutput) => void
   ): void;
 
@@ -286,7 +293,7 @@ export interface RpcV2Protocol {
   simpleScalarProperties(): Promise<SimpleScalarPropertiesCommandOutput>;
   simpleScalarProperties(
     args: SimpleScalarPropertiesCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<SimpleScalarPropertiesCommandOutput>;
   simpleScalarProperties(
     args: SimpleScalarPropertiesCommandInput,
@@ -294,7 +301,7 @@ export interface RpcV2Protocol {
   ): void;
   simpleScalarProperties(
     args: SimpleScalarPropertiesCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: SimpleScalarPropertiesCommandOutput) => void
   ): void;
 
@@ -304,7 +311,7 @@ export interface RpcV2Protocol {
   sparseNullsOperation(): Promise<SparseNullsOperationCommandOutput>;
   sparseNullsOperation(
     args: SparseNullsOperationCommandInput,
-    options?: __HttpHandlerOptions
+    options?: RpcV2ProtocolRequestOptions
   ): Promise<SparseNullsOperationCommandOutput>;
   sparseNullsOperation(
     args: SparseNullsOperationCommandInput,
@@ -312,7 +319,7 @@ export interface RpcV2Protocol {
   ): void;
   sparseNullsOperation(
     args: SparseNullsOperationCommandInput,
-    options: __HttpHandlerOptions,
+    options: RpcV2ProtocolRequestOptions,
     cb: (err: any, data?: SparseNullsOperationCommandOutput) => void
   ): void;
 }
diff --git a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGenerator.java b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGenerator.java
index b2c0cf9f144..b8c0bb76d00 100644
--- a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGenerator.java
+++ b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGenerator.java
@@ -135,6 +135,22 @@ public void run() {
 
         writer.write("");
 
+        // Per-request options accepted by the aggregated client convenience methods.
+        // Superset of the transport options that also carries a call-site MetricsRecorder.
+        String requestOptionsType = aggregateClientName + "RequestOptions";
+        writer.addTypeImport("MetricsRecorder", "__MetricsRecorder", TypeScriptDependency.SMITHY_TYPES);
+        writer.writeDocs("@public");
+        writer.openBlock(
+            "export interface $L extends $T {",
+            "}",
+            requestOptionsType,
+            applicationProtocol.getOptionsType(),
+            () -> {
+                writer.write("recorder?: __MetricsRecorder<any>;");
+            }
+        );
+        writer.write("");
+
         // Generate an aggregated client interface.
         writer.openBlock("export interface $L {", "}", aggregateClientName, () -> {
             for (OperationShape operation : containedOperations) {
@@ -157,7 +173,7 @@ public void run() {
                     """
                     $1L(
                       args: $2T,
-                      options?: $3T
+                      options?: $3L
                     ): Promise<$4T>;
                     $1L(
                       args: $2T,
@@ -165,12 +181,12 @@ public void run() {
                     ): void;
                     $1L(
                       args: $2T,
-                      options: $3T,
+                      options: $3L,
                       cb: (err: any, data?: $4T) => void
                     ): void;""",
                     methodName,
                     input,
-                    applicationProtocol.getOptionsType(),
+                    requestOptionsType,
                     output
                 );
                 writer.write("");
diff --git a/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGeneratorTest.java b/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGeneratorTest.java
new file mode 100644
index 00000000000..388971f7d0c
--- /dev/null
+++ b/smithy-typescript-codegen/src/test/java/software/amazon/smithy/typescript/codegen/ServiceAggregatedClientGeneratorTest.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package software.amazon.smithy.typescript.codegen;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.containsString;
+
+import org.junit.jupiter.api.Test;
+import software.amazon.smithy.build.MockManifest;
+import software.amazon.smithy.build.PluginContext;
+import software.amazon.smithy.model.Model;
+import software.amazon.smithy.model.node.Node;
+
+public class ServiceAggregatedClientGeneratorTest {
+
+    @Test
+    public void operationMethodsAcceptRequestOptionsWithRecorder() {
+        MockManifest manifest = new MockManifest();
+        PluginContext context = PluginContext.builder()
+            .pluginClassLoader(getClass().getClassLoader())
+            .model(
+                Model.assembler()
+                    .addImport(getClass().getResource("output-structure.smithy"))
+                    .discoverModels()
+                    .assemble()
+                    .unwrap()
+            )
+            .fileManifest(manifest)
+            .settings(
+                Node.objectNodeBuilder()
+                    .withMember("service", Node.from("smithy.example#Example"))
+                    .withMember("package", Node.from("example"))
+                    .withMember("packageVersion", Node.from("1.0.0"))
+                    .build()
+            )
+            .build();
+
+        new TypeScriptCodegenPlugin().execute(context);
+        String contents = manifest.getFileString(CodegenUtils.SOURCE_FOLDER + "//Example.ts").get();
+
+        // A named, readable options type is generated (superset of the transport options).
+        assertThat(contents, containsString("export interface ExampleRequestOptions extends __HttpHandlerOptions"));
+        assertThat(contents, containsString("recorder?: __MetricsRecorder<any>;"));
+        // Convenience methods reference the named type rather than an inline composed type.
+        assertThat(contents, containsString("options?: ExampleRequestOptions"));
+        assertThat(contents, containsString("options: ExampleRequestOptions"));
+    }
+}