diff --git a/fresh.gen.ts b/fresh.gen.ts
index 43d3eb3..ceb9338 100644
--- a/fresh.gen.ts
+++ b/fresh.gen.ts
@@ -16,6 +16,7 @@ import * as $reset from "./routes/reset.ts";
 import * as $u_event_followers from "./routes/u/event/followers.ts";
 import * as $u_event_inbox from "./routes/u/event/inbox.ts";
 import * as $u_event_index from "./routes/u/event/index.ts";
+import * as $u_event_outbox from "./routes/u/event/outbox.ts";
 import * as $CopyToClipboard from "./islands/CopyToClipboard.tsx";
 import * as $Counter from "./islands/Counter.tsx";
 import * as $EventCard from "./islands/EventCard.tsx";
@@ -38,6 +39,7 @@ const manifest = {
     "./routes/u/event/followers.ts": $u_event_followers,
     "./routes/u/event/inbox.ts": $u_event_inbox,
     "./routes/u/event/index.ts": $u_event_index,
+    "./routes/u/event/outbox.ts": $u_event_outbox,
   },
   islands: {
     "./islands/CopyToClipboard.tsx": $CopyToClipboard,
diff --git a/routes/u/event/index.ts b/routes/u/event/index.ts
index 725e44d..9369338 100644
--- a/routes/u/event/index.ts
+++ b/routes/u/event/index.ts
@@ -18,6 +18,7 @@ export const handler: Handlers = {
       "type": "Person",
       "discoverable": true,
       "inbox": `${entrypoint}u/event/inbox`,
+      "outbox": `${entrypoint}u/event/outbox`,
       "followers": `${entrypoint}u/event/followers`,
       "preferredUsername": "たまイベント",
       "name": "たまイベント",
diff --git a/routes/u/event/outbox.ts b/routes/u/event/outbox.ts
new file mode 100644
index 0000000..59776af
--- /dev/null
+++ b/routes/u/event/outbox.ts
@@ -0,0 +1,20 @@
+import { Handlers } from "$fresh/server.ts";
+import { entrypoint } from "../../../const.ts";
+import { EventItem } from "../../../interface/EventItem.interface.ts";
+import { kv } from "../../../kv.ts";
+
+export const handler: Handlers = {
+  async GET(_req, _ctx) {
+    const list = await kv.list<EventItem>({ prefix: ["eventItems"] });
+    let eventCount = 0;
+    for await (const item of list) {
+      if (!item.value.permitted) continue;
+      eventCount++;
+    }
+    return Response.json({
+      "@context": "https://www.w3.org/ns/activitystreams",
+      "id": `${entrypoint}u/event/outbox`,
+      "totalItems": eventCount,
+    });
+  },
+};