diff --git a/src/agents/tools/message-tool.ts b/src/agents/tools/message-tool.ts
index 657284b52..19cdb122d 100644
--- a/src/agents/tools/message-tool.ts
+++ b/src/agents/tools/message-tool.ts
@@ -340,6 +340,16 @@ export function createMessageTool(options?: MessageToolOptions): AnyAgentTool {
       const action = readStringParam(params, "action", {
         required: true,
       }) as ChannelMessageActionName;
+
+      // Handle path and filePath parameters: convert to media with file:// URL
+      if (action === "send" && !params.media) {
+        const filePath =
+          (params.path as string | undefined) || (params.filePath as string | undefined);
+        if (filePath) {
+          params.media = filePath.startsWith("file://") ? filePath : `file://${filePath}`;
+        }
+      }
+
       const accountId = readStringParam(params, "accountId") ?? agentAccountId;
 
       const gateway = {
diff --git a/src/infra/outbound/message-action-runner.ts b/src/infra/outbound/message-action-runner.ts
index dc8aeddf3..aef11c09c 100644
--- a/src/infra/outbound/message-action-runner.ts
+++ b/src/infra/outbound/message-action-runner.ts
@@ -343,7 +343,7 @@ async function hydrateSendAttachmentParams(params: {
   action: ChannelMessageActionName;
   dryRun?: boolean;
 }): Promise<void> {
-  if (params.action !== "sendAttachment") return;
+  if (params.action !== "sendAttachment" && params.action !== "send") return;
 
   const mediaHint = readStringParam(params.args, "media", { trim: false });
   const fileHint =