diff --git a/index.ts b/index.ts
index 2d5566d..30f7c5a 100644
--- a/index.ts
+++ b/index.ts
@@ -846,8 +846,7 @@ async function chat(text: string, files: PromptFiles = []) {
   const agent = await resolveAgent()
 
   const body: Record<string, unknown> = {
-    providerID,
-    modelID,
+    model: { providerID, modelID },
     ...(agent ? { agent } : {}),
     parts: [
       {
@@ -874,7 +873,7 @@ async function chat(text: string, files: PromptFiles = []) {
     ],
   }
 
-  const chatRes = await fetch(`${SERVER_URL}/session/${session.id}/chat`, {
+  const chatRes = await fetch(`${SERVER_URL}/session/${session.id}/message`, {
     method: "POST",
     headers: { "Content-Type": "application/json" },
     body: JSON.stringify(body),