diff --git a/src/index.ts b/src/index.ts
index c0880e7..f62517d 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -12,6 +12,16 @@ import { join } from "path";
 import { existsSync } from "fs";
 import { DatabaseSync } from "node:sqlite";
 
+// Type for command invocation
+interface CommandInvocation {
+  sessionID: string;
+  prompt: {
+    text: string;
+    // other prompt properties
+  };
+  delivery: "steer" | "queue";
+}
+
 interface Session {
   id: string;
   project_id: string;
@@ -123,25 +133,28 @@ export default define({
   id: "oc-session-all",
 
   async setup(ctx) {
-    console.log("[oc-session-all] V2 plugin loaded, registering tool...");
+    console.log("[oc-session-all] V2 plugin loaded, registering command...");
 
-    // Register the sessions-all tool
-    await ctx.tool.transform((editor) => {
+    // Register the sessions-all command
+    await ctx.command.transform((editor) => {
       editor.add({
         name: "sessions-all",
         description: "显示所有项目的会话记录，绕过目录过滤限制。Show all sessions from all projects.",
-        input: {},  // No input parameters required
-        async execute(input) {
-          console.log("[oc-session-all] Tool executed");
+        async execute(invocation: CommandInvocation) {
+          console.log("[oc-session-all] Command executed");
           const sessions = getAllSessionsFromDb();
           const output = formatSessions(sessions);
-          return {
-            content: output,
-          };
+          
+          // Send the output as a prompt to the session
+          await ctx.session.prompt({
+            sessionID: invocation.sessionID,
+            text: output,
+            delivery: invocation.delivery,
+          });
         },
       });
     });
 
-    console.log("[oc-session-all] Tool registered successfully");
+    console.log("[oc-session-all] Command registered successfully");
   },
 });
\ No newline at end of file