diff --git a/keyserver/src/fetchers/community-fetchers.js b/keyserver/src/fetchers/community-fetchers.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/fetchers/community-fetchers.js
@@ -0,0 +1,41 @@
+// @flow
+
+import type { CommunityInfo } from 'lib/types/community-types.js';
+
+import { dbQuery, SQL } from '../database/database.js';
+import { Viewer } from '../session/viewer.js';
+
+type ServerCommunityInfoWithHolder = $ReadOnly<{
+  ...CommunityInfo,
+  +id: string,
+  +blobHolder: ?string,
+}>;
+
+async function fetchCommunityInfos(
+  viewer: Viewer,
+): Promise<$ReadOnlyArray<ServerCommunityInfoWithHolder>> {
+  if (!viewer) {
+    return [];
+  }
+
+  const query = SQL`
+    SELECT c.id, c.farcaster_channel_id as farcasterChannelID,
+      c.blob_holder as blobHolder
+    FROM communities c
+    INNER JOIN memberships m
+      ON c.id = m.thread AND m.user = ${viewer.userID}
+    WHERE m.role > 0
+  `;
+
+  const [result] = await dbQuery(query);
+
+  const communityInfos = result.map(row => ({
+    id: row.id.toString(),
+    farcasterChannelID: row.farcasterChannelID,
+    blobHolder: row.blobHolder,
+  }));
+
+  return communityInfos;
+}
+
+export { fetchCommunityInfos };