diff --git a/keyserver/src/endpoints.js b/keyserver/src/endpoints.js
--- a/keyserver/src/endpoints.js
+++ b/keyserver/src/endpoints.js
@@ -45,6 +45,11 @@
   restoreEntryResponseValidator,
   saveEntryRequestInputValidator,
 } from './responders/entry-responders.js';
+import {
+  createOrUpdateFarcasterChannelTagResponder,
+  createOrUpdateFarcasterChannelTagInputValidator,
+  createOrUpdateFarcasterChannelTagResponseValidator,
+} from './responders/farcaster-channel-tag-responders.js';
 import type { JSONResponder } from './responders/handlers.js';
 import { createJSONResponder } from './responders/handlers.js';
 import { getOlmSessionInitializationDataResponder } from './responders/keys-responders.js';
@@ -575,6 +580,12 @@
     versionResponseValidator,
     [],
   ),
+  create_or_update_farcaster_channel_tag: createJSONResponder(
+    createOrUpdateFarcasterChannelTagResponder,
+    createOrUpdateFarcasterChannelTagInputValidator,
+    createOrUpdateFarcasterChannelTagResponseValidator,
+    baseLegalPolicies,
+  ),
 };
 
 export { jsonEndpoints };
diff --git a/keyserver/src/responders/farcaster-channel-tag-responders.js b/keyserver/src/responders/farcaster-channel-tag-responders.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/responders/farcaster-channel-tag-responders.js
@@ -0,0 +1,33 @@
+// @flow
+
+import t, { type TInterface } from 'tcomb';
+
+import type {
+  CreateOrUpdateFarcasterChannelTagRequest,
+  CreateOrUpdateFarcasterChannelTagResponse,
+} from 'lib/types/community-types';
+import { tShape, tID } from 'lib/utils/validation-utils.js';
+
+import { createOrUpdateFarcasterChannelTag } from '../creators/farcaster-channel-tag-creator.js';
+import type { Viewer } from '../session/viewer';
+
+export const createOrUpdateFarcasterChannelTagInputValidator: TInterface<CreateOrUpdateFarcasterChannelTagRequest> =
+  tShape<CreateOrUpdateFarcasterChannelTagRequest>({
+    commCommunityID: tID,
+    farcasterChannelID: t.String,
+  });
+
+export const createOrUpdateFarcasterChannelTagResponseValidator: TInterface<CreateOrUpdateFarcasterChannelTagResponse> =
+  tShape<CreateOrUpdateFarcasterChannelTagResponse>({
+    commCommunityID: tID,
+    blobHolder: t.String,
+  });
+
+async function createOrUpdateFarcasterChannelTagResponder(
+  viewer: Viewer,
+  request: CreateOrUpdateFarcasterChannelTagRequest,
+): Promise<CreateOrUpdateFarcasterChannelTagResponse> {
+  return await createOrUpdateFarcasterChannelTag(viewer, request);
+}
+
+export { createOrUpdateFarcasterChannelTagResponder };
diff --git a/lib/types/endpoints.js b/lib/types/endpoints.js
--- a/lib/types/endpoints.js
+++ b/lib/types/endpoints.js
@@ -112,6 +112,8 @@
   SEARCH_MESSAGES: 'search_messages',
   GET_OLM_SESSION_INITIALIZATION_DATA: 'get_olm_session_initialization_data',
   VERSION: 'version',
+  CREATE_OR_UPDATE_FARCASTER_CHANNEL_TAG:
+    'create_or_update_farcaster_channel_tag',
 });
 type HTTPPreferredEndpoint = $Values<typeof httpPreferredEndpoints>;