diff --git a/src/cli/App.tsx b/src/cli/App.tsx
index 84b1d63..f09c2bf 100644
--- a/src/cli/App.tsx
+++ b/src/cli/App.tsx
@@ -842,6 +842,7 @@ export default function App({
       // Start the conversation loop
       await processConversation([
         {
+          type: "message",
           role: "user",
           content: messageContent as unknown as MessageCreate["content"],
         },
diff --git a/src/cli/helpers/pasteRegistry.ts b/src/cli/helpers/pasteRegistry.ts
index 83a0bdb..14f5909 100644
--- a/src/cli/helpers/pasteRegistry.ts
+++ b/src/cli/helpers/pasteRegistry.ts
@@ -106,7 +106,7 @@ export function clearPlaceholdersInText(text: string): void {
 
 // Convert display text (with placeholders) into Letta content parts
 // Text placeholders are resolved; image placeholders become image content
-type Base64ImageSource = { type: "base64"; mediaType: string; data: string };
+type Base64ImageSource = { type: "base64"; media_type: string; data: string };
 type ContentPart =
   | { type: "text"; text: string }
   | { type: "image"; source: Base64ImageSource };
@@ -144,7 +144,7 @@ export function buildMessageContentFromDisplay(text: string): ContentPart[] {
         type: "image",
         source: {
           type: "base64",
-          mediaType: img.mediaType || "image/jpeg",
+          media_type: img.mediaType || "image/jpeg",
           data: img.data,
         },
       });
diff --git a/src/tests/clipboard.test.ts b/src/tests/clipboard.test.ts
index 4b81d0c..051ed77 100644
--- a/src/tests/clipboard.test.ts
+++ b/src/tests/clipboard.test.ts
@@ -56,7 +56,7 @@ test("buildMessageContentFromDisplay handles image placeholders", () => {
     type: "image",
     source: {
       type: "base64",
-      mediaType: "image/png",
+      media_type: "image/png",
       data: "abc123",
     },
   });