diff --git a/src/api/hooks/index.ts b/src/api/hooks/index.ts
index 990dda57b..001eb6322 100644
--- a/src/api/hooks/index.ts
+++ b/src/api/hooks/index.ts
@@ -45,6 +45,7 @@ export { useUpdateGroupTag } from './groups/useUpdateGroupTag.ts';
 
 // Statuses
 export { useBookmarks } from './statuses/useBookmarks.ts';
+export { useBookmark } from './statuses/useBookmark.ts';
 
 // Streaming
 export { useUserStream } from './streaming/useUserStream.ts';
diff --git a/src/api/hooks/statuses/useBookmark.ts b/src/api/hooks/statuses/useBookmark.ts
new file mode 100644
index 000000000..f0263a905
--- /dev/null
+++ b/src/api/hooks/statuses/useBookmark.ts
@@ -0,0 +1,80 @@
+import { importEntities } from 'soapbox/entity-store/actions.ts';
+import { Entities } from 'soapbox/entity-store/entities.ts';
+import { useTransaction } from 'soapbox/entity-store/hooks/index.ts';
+import { useApi } from 'soapbox/hooks/useApi.ts';
+import { useAppDispatch } from 'soapbox/hooks/useAppDispatch.ts';
+import { useLoggedIn } from 'soapbox/hooks/useLoggedIn.ts';
+import { statusSchema } from 'soapbox/schemas/index.ts';
+
+/**
+ * Bookmark and undo a bookmark, with optimistic update.
+ *
+ * https://docs.joinmastodon.org/methods/statuses/#bookmark
+ * POST /api/v1/statuses/:id/bookmark
+ *
+ * https://docs.joinmastodon.org/methods/statuses/#unbookmark
+ * POST /api/v1/statuses/:id/unbookmark
+ */
+function useBookmark() {
+  const api = useApi();
+  const dispatch = useAppDispatch();
+  const { isLoggedIn } = useLoggedIn();
+  const { transaction } = useTransaction();
+
+  function bookmarkEffect(statusId: string) {
+    transaction({
+      Statuses: {
+        [statusId]: (status) => ({
+          ...status,
+          bookmarked: true,
+        }),
+      },
+    });
+  }
+
+  function unbookmarkEffect(statusId: string) {
+    transaction({
+      Statuses: {
+        [statusId]: (status) => ({
+          ...status,
+          bookmarked: false,
+        }),
+      },
+    });
+  }
+
+  async function bookmark(statusId: string) {
+    if (!isLoggedIn) return;
+    bookmarkEffect(statusId);
+
+    try {
+      const response = await api.post(`/api/v1/statuses/${statusId}/bookmark`);
+      const result = statusSchema.safeParse(await response.json());
+      if (result.success) {
+        dispatch(importEntities([result.data], Entities.STATUSES, 'bookmarks'));
+      }
+    } catch (e) {
+      unbookmarkEffect(statusId);
+    }
+  }
+
+  async function unbookmark(statusId: string) {
+    if (!isLoggedIn) return;
+    unbookmarkEffect(statusId);
+
+    try {
+      await api.post(`/api/v1/statuses/${statusId}/unbookmark`);
+    } catch (e) {
+      bookmarkEffect(statusId);
+    }
+  }
+
+  return {
+    bookmark,
+    unbookmark,
+    bookmarkEffect,
+    unbookmarkEffect,
+  };
+}
+
+export { useBookmark };
\ No newline at end of file