diff --git a/packages/opencode/src/config/hooks.ts b/packages/opencode/src/config/hooks.ts
index 8772c9c6..0dd23500 100644
--- a/packages/opencode/src/config/hooks.ts
+++ b/packages/opencode/src/config/hooks.ts
@@ -34,7 +34,7 @@ export namespace ConfigHooks {
     Bus.subscribe(Session.Event.Idle, async (payload) => {
       const cfg = await Config.get()
       if (cfg.experimental?.hook?.session_completed) {
-        const session = await Session.get(payload.properties.sessionID)
+        const session = payload.properties.info
         // Only fire hook for top-level sessions (not subagent sessions)
         if (session.parentID) return
 
diff --git a/packages/opencode/src/session/index.ts b/packages/opencode/src/session/index.ts
index 494a39c4..f3f423a6 100644
--- a/packages/opencode/src/session/index.ts
+++ b/packages/opencode/src/session/index.ts
@@ -113,7 +113,7 @@ export namespace Session {
     Idle: Bus.event(
       "session.idle",
       z.object({
-        sessionID: z.string(),
+        info: Info,
       }),
     ),
     Error: Bus.event(
@@ -1381,7 +1381,7 @@ export namespace Session {
         if (session.parentID) return
 
         Bus.publish(Event.Idle, {
-          sessionID,
+          info: session,
         })
       },
     }
diff --git a/packages/sdk/js/src/gen/types.gen.ts b/packages/sdk/js/src/gen/types.gen.ts
index 3a97c283..49313779 100644
--- a/packages/sdk/js/src/gen/types.gen.ts
+++ b/packages/sdk/js/src/gen/types.gen.ts
@@ -488,7 +488,7 @@ export type EventSessionDeleted = {
 export type EventSessionIdle = {
   type: string
   properties: {
-    sessionID: string
+    info: Session
   }
 }
 
diff --git a/packages/web/src/content/docs/docs/plugins.mdx b/packages/web/src/content/docs/docs/plugins.mdx
index 910ee4cd..4a10077a 100644
--- a/packages/web/src/content/docs/docs/plugins.mdx
+++ b/packages/web/src/content/docs/docs/plugins.mdx
@@ -73,9 +73,10 @@ Send notifications when certain events occur:
 export const NotificationPlugin = async ({ client, $ }) => {
   return {
     event: async ({ event }) => {
-      // Send notification on session completion
+      // Send notification on session completion with session title
       if (event.type === "session.idle") {
-        await $`osascript -e 'display notification "Session completed!" with title "opencode"'`
+        const sessionTitle = event.properties.info.title
+        await $`osascript -e 'display notification "Session ${sessionTitle} completed!" with title "opencode"'`
       }
     },
   }