diff --git a/src/commands/index.ts b/src/commands/index.ts
index 9164d0a28..c41535f70 100644
--- a/src/commands/index.ts
+++ b/src/commands/index.ts
@@ -79,6 +79,7 @@ enum EXTENSION_COMMANDS {
 
   // Chat participant.
   OPEN_PARTICIPANT_CODE_IN_PLAYGROUND = 'mdb.openParticipantCodeInPlayground',
+  SEND_PARTICIPANT_MESSAGE = 'mdb.sendParticipantMessage',
   RUN_PARTICIPANT_CODE = 'mdb.runParticipantCode',
   CONNECT_WITH_PARTICIPANT = 'mdb.connectWithParticipant',
   SELECT_DATABASE_WITH_PARTICIPANT = 'mdb.selectDatabaseWithParticipant',
diff --git a/src/mdbExtensionController.ts b/src/mdbExtensionController.ts
index 8077e60d2..765434cce 100644
--- a/src/mdbExtensionController.ts
+++ b/src/mdbExtensionController.ts
@@ -46,6 +46,7 @@ import { createIdFactory, generateId } from './utils/objectIdHelper';
 import { ConnectionStorage } from './storage/connectionStorage';
 import type StreamProcessorTreeItem from './explorer/streamProcessorTreeItem';
 import type {
+  SendParticipantMessageCommandArgs,
   ParticipantCommand,
   RunParticipantCodeCommandArgs,
 } from './participant/participant';
@@ -324,6 +325,20 @@ export default class MDBExtensionController implements vscode.Disposable {
         });
       }
     );
+    this.registerParticipantCommand(
+      EXTENSION_COMMANDS.SEND_PARTICIPANT_MESSAGE,
+      async ({
+        message,
+        isPartialQuery,
+        isNewChat,
+      }: SendParticipantMessageCommandArgs) => {
+        await this._participantController.writeChatMessageAsUser(message, {
+          isPartialQuery,
+          isNewChat,
+        });
+        return true;
+      }
+    );
     this.registerParticipantCommand(
       EXTENSION_COMMANDS.RUN_PARTICIPANT_CODE,
       ({ runnableContent }: RunParticipantCodeCommandArgs) => {
diff --git a/src/participant/participant.ts b/src/participant/participant.ts
index 303b19554..d5ebdd036 100644
--- a/src/participant/participant.ts
+++ b/src/participant/participant.ts
@@ -64,6 +64,12 @@ interface NamespaceQuickPicks {
   data: string;
 }
 
+export type SendParticipantMessageCommandArgs = {
+  message: string;
+  isPartialQuery: boolean;
+  isNewChat: boolean;
+};
+
 export type RunParticipantCodeCommandArgs = {
   runnableContent: string;
 };
@@ -131,9 +137,25 @@ export default class ParticipantController {
    * in the chat. To work around this, we can write a message as the user, which will
    * trigger the chat handler and give us access to the model.
    */
-  writeChatMessageAsUser(message: string): Thenable<unknown> {
+  async writeChatMessageAsUser(
+    message: string,
+    options: {
+      isNewChat?: boolean;
+      isPartialQuery?: boolean;
+    } = {}
+  ): Promise<unknown> {
+    const { isNewChat = false, isPartialQuery = false } = options;
+
+    if (isNewChat) {
+      await vscode.commands.executeCommand('workbench.action.chat.newChat');
+      await vscode.commands.executeCommand(
+        'workbench.action.chat.clearHistory'
+      );
+    }
+
     return vscode.commands.executeCommand('workbench.action.chat.open', {
       query: `@MongoDB ${message}`,
+      isPartialQuery,
     });
   }