Add channel Id and subchannel Id to tool request header.

packages/agents-a365-tooling-extensions-claude/src/McpToolRegistrationService.ts

@@ -50,12 +50,8 @@ export class McpToolRegistrationService {
     const mcpServers: Record<string, McpServerConfig> = {};
     const tools: McpClientTool[] = [];
 
-    for (const server of servers) {
-      // Compose headers if values are available
-      const headers: Record<string, string> = {};
-      if (authToken) {
-        headers['Authorization'] = `Bearer ${authToken}`;
-      }
+    for (const server of servers) {      
+      const headers: Record<string, string> = Utility.GetToolRequestHeaders(authToken, turnContext);
 
       // Add each server to the config object
       mcpServers[server.mcpServerName] = {
@@ -87,4 +83,4 @@ export class McpToolRegistrationService {
 
     agentOptions.mcpServers = Object.assign(agentOptions.mcpServers ?? {}, mcpServers);
   }
-}
+}

packages/agents-a365-tooling-extensions-langchain/src/McpToolRegistrationService.ts

@@ -54,10 +54,7 @@ export class McpToolRegistrationService {
 
     for (const server of servers) {
       // Compose headers if values are available
-      const headers: Record<string, string> = {};
-      if (authToken) {
-        headers['Authorization'] = `Bearer ${authToken}`;
-      }
+      const headers: Record<string, string> = Utility.GetToolRequestHeaders(authToken, turnContext);
 
       // Create Connection instance for LangChain agents
       mcpServers[server.mcpServerName] = {

packages/agents-a365-tooling-extensions-openai/src/McpToolRegistrationService.ts

@@ -53,10 +53,7 @@ export class McpToolRegistrationService {
 
     for (const server of servers) {
       // Compose headers if values are available
-      const headers: Record<string, string> = {};
-      if (authToken) {
-        headers['Authorization'] = `Bearer ${authToken}`;
-      }
+      const headers: Record<string, string> = Utility.GetToolRequestHeaders(authToken, turnContext);
 
       // Create MCPServerStreamableHttp instance for OpenAI agents
       const mcpServer = new MCPServerStreamableHttp({
@@ -75,4 +72,4 @@ export class McpToolRegistrationService {
 
     return agent;
   }
-}
+}

packages/agents-a365-tooling/src/Utility.ts

@@ -1,10 +1,47 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
+import { TurnContext } from '@microsoft/agents-hosting';
+
 // Constant for MCP Platform base URL in production
 const MCP_PLATFORM_PROD_BASE_URL = 'https://agent365.svc.cloud.microsoft';
 
 export class Utility {
+  public static readonly HEADER_CHANNEL_ID = 'x-ms-channel-id';
+  public static readonly HEADER_SUBCHANNEL_ID = 'x-ms-subchannel-id';
+
+  /**
+   * Compose standard headers for MCP tooling requests.
+   * Includes Authorization bearer token when provided, and optionally includes channel and subchannel identifiers for routing.
+   *
+   * @param authToken Bearer token for Authorization header.
+   * @param turnContext Optional TurnContext object from which channel and subchannel IDs are extracted.
+   * @returns A headers record suitable for HTTP requests.
+   */
+  public static GetToolRequestHeaders(
+    authToken?: string,
+    turnContext?: TurnContext
+  ): Record<string, string> {
+    const headers: Record<string, string> = {};
+
+    if (authToken) {
+      headers['Authorization'] = `Bearer ${authToken}`;
+    }
+
+    const channelId = turnContext?.activity?.channelId as string | undefined;
+    const subChannelId = turnContext?.activity?.channelIdSubChannel as string | undefined;
+
+    if (channelId) {
+      headers[Utility.HEADER_CHANNEL_ID] = channelId;
+    }
+
+    if (subChannelId) {
+      headers[Utility.HEADER_SUBCHANNEL_ID] = subChannelId;
+    }
+
+    return headers;
+  }
+
   /**
    * Validates a JWT authentication token.
    * Checks that the token is a valid JWT and is not expired.
@@ -132,4 +169,4 @@ export class Utility {
 
     return MCP_PLATFORM_PROD_BASE_URL;
   }
-}
+}