diff --git a/keyserver/src/creators/farcaster-channel-tag-creator.js b/keyserver/src/creators/farcaster-channel-tag-creator.js
index 207fe5c9f..76e5d912c 100644
--- a/keyserver/src/creators/farcaster-channel-tag-creator.js
+++ b/keyserver/src/creators/farcaster-channel-tag-creator.js
@@ -1,254 +1,254 @@
 // @flow
 
 import t, { type TInterface } from 'tcomb';
 import uuid from 'uuid';
 
 import { farcasterChannelTagBlobHash } from 'lib/shared/community-utils.js';
 import { hasMinCodeVersion } from 'lib/shared/version-utils.js';
 import type {
   CreateOrUpdateFarcasterChannelTagRequest,
   CreateOrUpdateFarcasterChannelTagResponse,
 } from 'lib/types/community-types.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import type { BlobOperationResult } from 'lib/utils/blob-service.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { tShape } from 'lib/utils/validation-utils.js';
 
 import {
   dbQuery,
   SQL,
   MYSQL_DUPLICATE_ENTRY_FOR_KEY_ERROR_CODE,
 } from '../database/database.js';
 import { fetchCommunityInfos } from '../fetchers/community-fetchers.js';
 import { fetchServerThreadInfos } from '../fetchers/thread-fetchers.js';
 import { checkThreadPermission } from '../fetchers/thread-permission-fetchers.js';
 import {
   uploadBlobKeyserverWrapper,
   assignHolder,
   download,
   deleteBlob,
   type BlobDownloadResult,
 } from '../services/blob.js';
 import { Viewer } from '../session/viewer.js';
 import { updateThread } from '../updaters/thread-updaters.js';
 import { thisKeyserverID } from '../user/identity.js';
-import { neynarClient } from '../utils/fc-cache.js';
+import { fcCache } from '../utils/fc-cache.js';
 import { getAndAssertKeyserverURLFacts } from '../utils/urls.js';
 
 async function createOrUpdateFarcasterChannelTag(
   viewer: Viewer,
   request: CreateOrUpdateFarcasterChannelTagRequest,
 ): Promise<CreateOrUpdateFarcasterChannelTagResponse> {
   const permissionPromise = checkThreadPermission(
     viewer,
     request.commCommunityID,
     threadPermissions.MANAGE_FARCASTER_CHANNEL_TAGS,
   );
 
   const [hasPermission, communityInfos, blobDownload, keyserverID] =
     await Promise.all([
       permissionPromise,
       fetchCommunityInfos(viewer, [request.commCommunityID]),
       getFarcasterChannelTagBlob(request.farcasterChannelID),
       thisKeyserverID(),
     ]);
 
   if (!hasPermission) {
     throw new ServerError('invalid_credentials');
   }
 
   if (communityInfos.length !== 1) {
     throw new ServerError('invalid_parameters');
   }
 
   if (blobDownload.found) {
     throw new ServerError('already_in_use');
   }
 
   const communityID = `${keyserverID}|${request.commCommunityID}`;
   const blobHolder = uuid.v4();
 
   const blobResult = await uploadFarcasterChannelTagBlob(
     communityID,
     request.farcasterChannelID,
     blobHolder,
   );
 
   if (!blobResult.success) {
     if (blobResult.reason === 'HASH_IN_USE') {
       throw new ServerError('already_in_use');
     } else {
       throw new ServerError('unknown_error');
     }
   }
 
   const query = SQL`
     START TRANSACTION;
 
     SELECT farcaster_channel_id, blob_holder
       INTO @currentFarcasterChannelID, @currentBlobHolder
     FROM communities
     WHERE id = ${request.commCommunityID}
     FOR UPDATE;
 
     UPDATE communities
     SET 
       farcaster_channel_id = ${request.farcasterChannelID},
       blob_holder = ${blobHolder}
     WHERE id = ${request.commCommunityID};
 
     COMMIT;
 
     SELECT
       @currentFarcasterChannelID AS oldFarcasterChannelID,
       @currentBlobHolder AS oldBlobHolder;
   `;
 
   try {
     const [transactionResult] = await dbQuery(query, {
       multipleStatements: true,
     });
 
     const selectResult = transactionResult.pop();
     const [{ oldFarcasterChannelID, oldBlobHolder }] = selectResult;
 
     if (oldFarcasterChannelID && oldBlobHolder) {
       await deleteBlob(
         {
           hash: farcasterChannelTagBlobHash(oldFarcasterChannelID),
           holder: oldBlobHolder,
         },
         true,
       );
     }
   } catch (error) {
     await deleteBlob(
       {
         hash: farcasterChannelTagBlobHash(request.farcasterChannelID),
         holder: blobHolder,
       },
       true,
     );
 
     if (error.errno === MYSQL_DUPLICATE_ENTRY_FOR_KEY_ERROR_CODE) {
       throw new ServerError('already_in_use');
     }
     throw new ServerError('invalid_parameters');
   }
 
   const neynarChannelDescriptionPromise = (async () => {
-    if (!neynarClient) {
+    if (!fcCache) {
       return '';
     }
-    const channelInfo = await neynarClient?.fetchFarcasterChannelByID(
+    const channelInfo = await fcCache?.getFarcasterChannelForChannelID(
       request.farcasterChannelID,
     );
     return channelInfo?.description ?? '';
   })();
 
   const [fcChannelDescription, serverThreadInfos] = await Promise.all([
     neynarChannelDescriptionPromise,
     fetchServerThreadInfos({ threadID: request.commCommunityID }),
   ]);
 
   const threadInfo = serverThreadInfos.threadInfos[request.commCommunityID];
   if (!threadInfo) {
     return {
       commCommunityID: request.commCommunityID,
       farcasterChannelID: request.farcasterChannelID,
     };
   }
   const { avatar, description } = threadInfo;
   if (avatar && description) {
     return {
       commCommunityID: request.commCommunityID,
       farcasterChannelID: request.farcasterChannelID,
     };
   }
 
   let changes = {};
   if (!avatar) {
     changes = { ...changes, avatar: { type: 'farcaster' } };
   }
   if (!description) {
     changes = { ...changes, description: fcChannelDescription };
   }
 
   const changeThreadSettingsResult = await updateThread(viewer, {
     threadID: request.commCommunityID,
     changes,
   });
 
   if (
     !hasMinCodeVersion(viewer.platformDetails, {
       native: 433,
       web: 138,
     })
   ) {
     return {
       commCommunityID: request.commCommunityID,
       farcasterChannelID: request.farcasterChannelID,
     };
   }
 
   return {
     commCommunityID: request.commCommunityID,
     farcasterChannelID: request.farcasterChannelID,
     ...changeThreadSettingsResult,
   };
 }
 
 function getFarcasterChannelTagBlob(
   secret: string,
 ): Promise<BlobDownloadResult> {
   const hash = farcasterChannelTagBlobHash(secret);
 
   return download(hash);
 }
 
 const farcasterChannelTagBlobValidator: TInterface<FarcasterChannelTagBlob> =
   tShape<FarcasterChannelTagBlob>({
     commCommunityID: t.String,
     farcasterChannelID: t.String,
     keyserverURL: t.String,
   });
 
 type FarcasterChannelTagBlob = {
   +commCommunityID: string,
   +farcasterChannelID: string,
   +keyserverURL: string,
 };
 
 async function uploadFarcasterChannelTagBlob(
   commCommunityID: string,
   farcasterChannelID: string,
   holder: string,
 ): Promise<BlobOperationResult> {
   const { baseDomain, basePath } = getAndAssertKeyserverURLFacts();
   const keyserverURL = baseDomain + basePath;
 
   const payload: FarcasterChannelTagBlob = {
     commCommunityID,
     farcasterChannelID,
     keyserverURL,
   };
   const payloadString = JSON.stringify(payload);
 
   const hash = farcasterChannelTagBlobHash(farcasterChannelID);
   const blob = new Blob([payloadString]);
 
   const uploadResult = await uploadBlobKeyserverWrapper(blob, hash);
 
   if (!uploadResult.success) {
     return uploadResult;
   }
 
   return await assignHolder({ holder, hash });
 }
 
 export {
   createOrUpdateFarcasterChannelTag,
   uploadFarcasterChannelTagBlob,
   getFarcasterChannelTagBlob,
   farcasterChannelTagBlobValidator,
 };
diff --git a/keyserver/src/responders/farcaster-webhook-responders.js b/keyserver/src/responders/farcaster-webhook-responders.js
index 69530797b..209de0083 100644
--- a/keyserver/src/responders/farcaster-webhook-responders.js
+++ b/keyserver/src/responders/farcaster-webhook-responders.js
@@ -1,337 +1,337 @@
 // @flow
 
 import { createHmac } from 'crypto';
 import type { $Request } from 'express';
 import invariant from 'invariant';
 
 import bots from 'lib/facts/bots.js';
 import { inviteLinkURL } from 'lib/facts/links.js';
 import { extractKeyserverIDFromID } from 'lib/keyserver-conn/keyserver-call-utils.js';
 import { createSidebarThreadName } from 'lib/shared/sidebar-utils.js';
 import { type NeynarWebhookCastCreatedEvent } from 'lib/types/farcaster-types.js';
 import { messageTypes } from 'lib/types/message-types-enum.js';
 import { threadTypes } from 'lib/types/thread-types-enum.js';
 import { type NewThreadResponse } from 'lib/types/thread-types.js';
 import { neynarWebhookCastCreatedEventValidator } from 'lib/types/validators/farcaster-webhook-validators.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { assertWithValidator } from 'lib/utils/validation-utils.js';
 
 import {
   getFarcasterChannelTagBlob,
   createOrUpdateFarcasterChannelTag,
   farcasterChannelTagBlobValidator,
 } from '../creators/farcaster-channel-tag-creator.js';
 import { createOrUpdatePublicLink } from '../creators/invite-link-creator.js';
 import createMessages from '../creators/message-creator.js';
 import { createThread } from '../creators/thread-creator.js';
 import { fetchServerThreadInfos } from '../fetchers/thread-fetchers.js';
 import { createBotViewer } from '../session/bots.js';
 import { createScriptViewer } from '../session/scripts.js';
 import {
   changeRole,
   commitMembershipChangeset,
 } from '../updaters/thread-permission-updaters.js';
 import { updateRole, joinThread } from '../updaters/thread-updaters.js';
 import { thisKeyserverAdmin, thisKeyserverID } from '../user/identity.js';
 import { getFarcasterBotConfig } from '../utils/farcaster-bot.js';
 import { getVerifiedUserIDForFID } from '../utils/farcaster-utils.js';
-import { neynarClient } from '../utils/fc-cache.js';
+import { neynarClient, fcCache } from '../utils/fc-cache.js';
 import { getNeynarConfig } from '../utils/neynar-utils.js';
 
 const taggedCommFarcasterInputValidator =
   neynarWebhookCastCreatedEventValidator;
 const threadHashTagRegex = /\B#createathread\b/i;
 
 const noChannelCommunityID = '80887273';
 const { commbot } = bots;
 const commbotViewer = createBotViewer(commbot.userID);
 
 async function createCastSidebar(
   sidebarCastHash: string,
   channelFarcasterID: ?string,
   channelCommunityID: string,
   taggerUserID: ?string,
 ): Promise<?NewThreadResponse> {
   const sidebarCast =
     await neynarClient?.fetchFarcasterCastByHash(sidebarCastHash);
 
   if (!sidebarCast) {
     return null;
   }
 
   const {
     author: { username: castAuthor },
     text: castText,
   } = sidebarCast;
 
   const warpcastLink = `https://warpcast.com/${castAuthor}/${sidebarCastHash}`;
   const saidText = `[said](${warpcastLink})`;
   const channelText = channelFarcasterID
     ? ` in channel /${channelFarcasterID}`
     : '';
 
   const quoteText = castText
     .split('\n')
     .map(line => `> ${line}`)
     .join('\n');
 
   const messageText = `${castAuthor} ${saidText}${channelText}:\n${quoteText}`;
 
   let viewer = commbotViewer;
   if (taggerUserID) {
     viewer = createScriptViewer(taggerUserID);
     await joinThread(viewer, {
       threadID: channelCommunityID,
     });
   } else {
     const changeset = await changeRole(
       channelCommunityID,
       [commbot.userID],
       -1,
     );
     await commitMembershipChangeset(viewer, changeset);
   }
 
   const [{ id: messageID }] = await createMessages(viewer, [
     {
       type: messageTypes.TEXT,
       threadID: channelCommunityID,
       creatorID: viewer.id,
       time: Date.now(),
       text: messageText,
     },
   ]);
 
   invariant(
     messageID,
     'message returned from createMessages always has ID set',
   );
   const sidebarThreadName = createSidebarThreadName(messageText);
 
   const response = await createThread(
     viewer,
     {
       type: threadTypes.SIDEBAR,
       parentThreadID: channelCommunityID,
       name: sidebarThreadName,
       sourceMessageID: messageID,
     },
     {
       addViewerAsGhost: !taggerUserID,
     },
   );
 
   return response;
 }
 
 async function createTaggedFarcasterCommunity(
   channelID: string,
   taggerUserID: ?string,
 ): Promise<NewThreadResponse> {
   const keyserverAdminPromise = thisKeyserverAdmin();
 
   const neynarChannel =
-    await neynarClient?.fetchFarcasterChannelByID(channelID);
+    await fcCache?.getFarcasterChannelForChannelID(channelID);
   if (!neynarChannel) {
     throw new ServerError('channel_not_found');
   }
 
   const leadFID = neynarChannel.lead.fid.toString();
   const [leadUserID, keyserverAdmin] = await Promise.all([
     getVerifiedUserIDForFID(leadFID),
     keyserverAdminPromise,
   ]);
 
   const communityAdminID = leadUserID
     ? leadUserID
     : taggerUserID || keyserverAdmin.id;
 
   const initialMemberIDs = [
     ...new Set([leadUserID, taggerUserID, communityAdminID].filter(Boolean)),
   ];
 
   const newThreadResponse = await createThread(
     commbotViewer,
     {
       type: threadTypes.COMMUNITY_ROOT,
       name: neynarChannel.name,
       initialMemberIDs,
     },
     {
       forceAddMembers: true,
       addViewerAsGhost: true,
     },
   );
 
   const { newThreadID } = newThreadResponse;
   const fetchThreadResult = await fetchServerThreadInfos({
     threadID: newThreadResponse.newThreadID,
   });
   const threadInfo = fetchThreadResult.threadInfos[newThreadID];
 
   if (!threadInfo) {
     throw new ServerError('fetch_failed');
   }
 
   const adminRoleID = Object.keys(threadInfo.roles).find(
     roleID => threadInfo.roles[roleID].name === 'Admins',
   );
 
   if (!adminRoleID) {
     throw new ServerError('community_missing_admin');
   }
 
   await updateRole(commbotViewer, {
     threadID: newThreadID,
     memberIDs: [communityAdminID],
     role: adminRoleID,
   });
 
   await createOrUpdateFarcasterChannelTag(commbotViewer, {
     commCommunityID: newThreadResponse.newThreadID,
     farcasterChannelID: channelID,
   });
 
   return newThreadResponse;
 }
 
 async function verifyNeynarWebhookSignature(
   signature: string,
   event: NeynarWebhookCastCreatedEvent,
 ): Promise<boolean> {
   const neynarSecret = await getNeynarConfig();
   if (!neynarSecret?.neynarWebhookSecret) {
     throw new ServerError('missing_webhook_secret');
   }
 
   const hmac = createHmac('sha512', neynarSecret.neynarWebhookSecret);
   hmac.update(JSON.stringify(event));
 
   return hmac.digest('hex') === signature;
 }
 
 async function taggedCommFarcasterResponder(req: $Request): Promise<void> {
   const { body } = req;
 
   const event = assertWithValidator(body, taggedCommFarcasterInputValidator);
   const {
     author: { fid: eventTaggerFID },
     text: eventText,
     channel: eventChannel,
   } = event.data;
 
   const foundCreateThreadHashTag = threadHashTagRegex.test(eventText);
 
   if (!foundCreateThreadHashTag) {
     return;
   }
 
   const neynarConfigPromise = getNeynarConfig();
   const taggerUserIDPromise = getVerifiedUserIDForFID(
     eventTaggerFID.toString(),
   );
 
   const signature = req.header('X-Neynar-Signature');
   if (!signature) {
     throw new ServerError('missing_neynar_signature');
   }
 
   const [isValidSignature, farcasterBotConfig] = await Promise.all([
     verifyNeynarWebhookSignature(signature, event),
     getFarcasterBotConfig(),
   ]);
 
   if (!isValidSignature) {
     throw new ServerError('invalid_webhook_signature');
   }
 
   const eventChannelID = eventChannel?.id;
   const isAuthoritativeFarcasterBot =
     farcasterBotConfig.authoritativeFarcasterBot;
 
   if (!eventChannelID && !isAuthoritativeFarcasterBot) {
     return;
   }
 
   let channelCommunityID = noChannelCommunityID;
   if (eventChannelID) {
     const blobDownload = await getFarcasterChannelTagBlob(eventChannelID);
     if (blobDownload.found) {
       const blobText = await blobDownload.blob.text();
       const blobObject = JSON.parse(blobText);
       const farcasterChannelTagBlob = assertWithValidator(
         blobObject,
         farcasterChannelTagBlobValidator,
       );
 
       const { commCommunityID } = farcasterChannelTagBlob;
       const commCommunityKeyserverID =
         extractKeyserverIDFromID(commCommunityID);
       const keyserverID = await thisKeyserverID();
 
       if (keyserverID !== commCommunityKeyserverID) {
         return;
       }
       channelCommunityID = commCommunityID.split('|')[1];
     } else if (!blobDownload.found && blobDownload.status === 404) {
       if (!isAuthoritativeFarcasterBot) {
         return;
       }
 
       const taggerUserID = await taggerUserIDPromise;
       const newThreadResponse = await createTaggedFarcasterCommunity(
         eventChannelID,
         taggerUserID,
       );
       channelCommunityID = newThreadResponse.newThreadID;
     } else {
       throw new ServerError('blob_fetch_failed');
     }
   }
 
   const { hash: castHash, parent_hash: parentHash } = event.data;
   const taggerUserID = await taggerUserIDPromise;
 
   // we use the parent cast to create the sidebar source message if it exists
   const sidebarCastHash = parentHash ?? castHash;
   const sidebarThreadResponse = await createCastSidebar(
     sidebarCastHash,
     eventChannel?.id,
     channelCommunityID,
     taggerUserID,
   );
 
   if (!sidebarThreadResponse) {
     return;
   }
 
   const inviteLinkName = Math.random().toString(36).slice(-9);
 
   const [inviteLink, neynarConfig] = await Promise.all([
     createOrUpdatePublicLink(commbotViewer, {
       name: inviteLinkName,
       communityID: channelCommunityID,
       threadID: sidebarThreadResponse.newThreadID,
     }),
     neynarConfigPromise,
   ]);
 
   const introText = 'I created a thread on Comm. Join the conversation here:';
   const replyText = `${introText} ${inviteLinkURL(inviteLink.name)}`;
 
   if (!neynarConfig?.signerUUID) {
     throw new ServerError('missing_signer_uuid');
   }
 
   const postCastResponse = await neynarClient?.postCast(
     neynarConfig.signerUUID,
     castHash,
     replyText,
   );
 
   if (!postCastResponse?.success) {
     throw new ServerError('post_cast_failed');
   }
 }
 
 export { taggedCommFarcasterResponder, taggedCommFarcasterInputValidator };
diff --git a/keyserver/src/updaters/thread-updaters.js b/keyserver/src/updaters/thread-updaters.js
index f5e87006d..d11d3d35c 100644
--- a/keyserver/src/updaters/thread-updaters.js
+++ b/keyserver/src/updaters/thread-updaters.js
@@ -1,1111 +1,1111 @@
 // @flow
 
 import { specialRoles } from 'lib/permissions/special-roles.js';
 import { getRolePermissionBlobs } from 'lib/permissions/thread-permissions.js';
 import { filteredThreadIDs } from 'lib/selectors/calendar-filter-selectors.js';
 import { getPinnedContentFromMessage } from 'lib/shared/message-utils.js';
 import {
   threadHasAdminRole,
   roleIsAdminRole,
   viewerIsMember,
   getThreadTypeParentRequirement,
 } from 'lib/shared/thread-utils.js';
 import { messageTypes } from 'lib/types/message-types-enum.js';
 import type { RawMessageInfo, MessageData } from 'lib/types/message-types.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import { threadTypes } from 'lib/types/thread-types-enum.js';
 import {
   type RoleChangeRequest,
   type ChangeThreadSettingsResult,
   type RemoveMembersRequest,
   type LeaveThreadRequest,
   type LeaveThreadResult,
   type UpdateThreadRequest,
   type ServerThreadJoinRequest,
   type ThreadJoinResult,
   type ToggleMessagePinRequest,
   type ToggleMessagePinResult,
 } from 'lib/types/thread-types.js';
 import { updateTypes } from 'lib/types/update-types-enum.js';
 import { ServerError } from 'lib/utils/errors.js';
 import { canToggleMessagePin } from 'lib/utils/message-pinning-utils.js';
 import { promiseAll, ignorePromiseRejections } from 'lib/utils/promises.js';
 import { firstLine } from 'lib/utils/string-utils.js';
 import { validChatNameRegex } from 'lib/utils/validation-utils.js';
 
 import { reportLinkUsage } from './link-updaters.js';
 import { updateRoles } from './role-updaters.js';
 import {
   changeRole,
   recalculateThreadPermissions,
   commitMembershipChangeset,
   type MembershipChangeset,
   type MembershipRow,
 } from './thread-permission-updaters.js';
 import createMessages from '../creators/message-creator.js';
 import { createUpdates } from '../creators/update-creator.js';
 import { dbQuery, SQL } from '../database/database.js';
 import { fetchCommunityFarcasterChannelTag } from '../fetchers/community-fetchers.js';
 import { checkIfInviteLinkIsValid } from '../fetchers/link-fetchers.js';
 import { fetchMessageInfoByID } from '../fetchers/message-fetchers.js';
 import { fetchRoles } from '../fetchers/role-fetchers.js';
 import {
   fetchThreadInfos,
   fetchServerThreadInfos,
   determineThreadAncestry,
   rawThreadInfosFromServerThreadInfos,
   determineThreadAncestryForPossibleMemberResolution,
 } from '../fetchers/thread-fetchers.js';
 import {
   checkThreadPermission,
   viewerHasPositiveRole,
   checkThread,
   validateCandidateMembers,
 } from '../fetchers/thread-permission-fetchers.js';
 import {
   verifyUserIDs,
   verifyUserOrCookieIDs,
 } from '../fetchers/user-fetchers.js';
 import type { Viewer } from '../session/viewer.js';
-import { neynarClient } from '../utils/fc-cache.js';
+import { neynarClient, fcCache } from '../utils/fc-cache.js';
 import { findUserIdentities } from '../utils/identity-utils.js';
 import { redisCache } from '../utils/redis-cache.js';
 import RelationshipChangeset from '../utils/relationship-changeset.js';
 
 type UpdateRoleOptions = {
   +silenceNewMessages?: boolean,
   +forcePermissionRecalculation?: boolean,
 };
 async function updateRole(
   viewer: Viewer,
   request: RoleChangeRequest,
   options?: UpdateRoleOptions,
 ): Promise<ChangeThreadSettingsResult> {
   const silenceNewMessages = options?.silenceNewMessages;
   const forcePermissionRecalculation = options?.forcePermissionRecalculation;
 
   if (!viewer.loggedIn) {
     throw new ServerError('not_logged_in');
   }
 
   const [memberIDs, hasPermission, fetchThreadResult] = await Promise.all([
     verifyUserIDs(request.memberIDs),
     checkThreadPermission(
       viewer,
       request.threadID,
       threadPermissions.CHANGE_ROLE,
     ),
     fetchServerThreadInfos({ threadID: request.threadID }),
   ]);
   if (memberIDs.length === 0) {
     throw new ServerError('invalid_parameters');
   }
   if (!hasPermission) {
     throw new ServerError('invalid_credentials');
   }
 
   const threadInfo = fetchThreadResult.threadInfos[request.threadID];
   if (!threadInfo) {
     throw new ServerError('invalid_parameters');
   }
 
   const adminRoleID = Object.keys(threadInfo.roles).find(
     roleID => threadInfo.roles[roleID].name === 'Admins',
   );
 
   // Ensure that there will always still be at least one admin in a community
   if (adminRoleID && adminRoleID !== request.role) {
     const memberRoles = memberIDs.map(
       memberID =>
         threadInfo.members.find(member => member.id === memberID)?.role,
     );
 
     const communityAdminsCount = threadInfo.members.filter(
       member => member.role === adminRoleID,
     ).length;
 
     const changedAdminsCount = memberRoles.filter(
       memberRole => memberRole === adminRoleID,
     ).length;
 
     if (changedAdminsCount >= communityAdminsCount) {
       throw new ServerError('invalid_parameters');
     }
   }
 
   const query = SQL`
     SELECT user, role
     FROM memberships
     WHERE user IN (${memberIDs})
       AND thread = ${request.threadID}
   `;
   const [result] = await dbQuery(query);
 
   let nonMemberUser = false;
   let numResults = 0;
   for (const row of result) {
     if (row.role <= 0) {
       nonMemberUser = true;
       break;
     }
     numResults++;
   }
   if (nonMemberUser || numResults < memberIDs.length) {
     throw new ServerError('invalid_parameters');
   }
 
   const changeset = await changeRole(
     request.threadID,
     memberIDs,
     request.role,
     {
       forcePermissionRecalculation: !!forcePermissionRecalculation,
     },
   );
 
   const { viewerUpdates } = await commitMembershipChangeset(
     viewer,
     changeset,
     forcePermissionRecalculation
       ? { changedThreadIDs: new Set([request.threadID]) }
       : undefined,
   );
 
   let newMessageInfos: Array<RawMessageInfo> = [];
   if (!silenceNewMessages) {
     const messageData = {
       type: messageTypes.CHANGE_ROLE,
       threadID: request.threadID,
       creatorID: viewer.userID,
       time: Date.now(),
       userIDs: memberIDs,
       newRole: request.role,
       roleName: threadInfo.roles[request.role].name,
     };
     newMessageInfos = await createMessages(viewer, [messageData]);
   }
 
   return { updatesResult: { newUpdates: viewerUpdates }, newMessageInfos };
 }
 
 async function removeMembers(
   viewer: Viewer,
   request: RemoveMembersRequest,
 ): Promise<ChangeThreadSettingsResult> {
   const viewerID = viewer.userID;
   if (request.memberIDs.includes(viewerID)) {
     throw new ServerError('invalid_parameters');
   }
 
   const [memberIDs, hasPermission] = await Promise.all([
     verifyUserOrCookieIDs(request.memberIDs),
     checkThreadPermission(
       viewer,
       request.threadID,
       threadPermissions.REMOVE_MEMBERS,
     ),
   ]);
   if (memberIDs.length === 0) {
     throw new ServerError('invalid_parameters');
   }
   if (!hasPermission) {
     throw new ServerError('invalid_credentials');
   }
 
   const query = SQL`
     SELECT m.user, m.role, r.id AS default_role
     FROM memberships m
     LEFT JOIN roles r ON r.special_role = ${specialRoles.DEFAULT_ROLE}
       AND r.thread = ${request.threadID}
     WHERE m.user IN (${memberIDs})
       AND m.thread = ${request.threadID}
   `;
   const [result] = await dbQuery(query);
 
   let nonDefaultRoleUser = false;
   const actualMemberIDs = [];
   for (const row of result) {
     if (row.role <= 0) {
       continue;
     }
     actualMemberIDs.push(row.user.toString());
     if (row.role !== row.default_role) {
       nonDefaultRoleUser = true;
     }
   }
 
   if (nonDefaultRoleUser) {
     const hasChangeRolePermission = await checkThreadPermission(
       viewer,
       request.threadID,
       threadPermissions.CHANGE_ROLE,
     );
     if (!hasChangeRolePermission) {
       throw new ServerError('invalid_credentials');
     }
   }
 
   const changeset = await changeRole(request.threadID, actualMemberIDs, 0);
   const { viewerUpdates } = await commitMembershipChangeset(viewer, changeset);
 
   const newMessageInfos = await (async () => {
     if (actualMemberIDs.length === 0) {
       return [];
     }
     const messageData = {
       type: messageTypes.REMOVE_MEMBERS,
       threadID: request.threadID,
       creatorID: viewerID,
       time: Date.now(),
       removedUserIDs: actualMemberIDs,
     };
     return await createMessages(viewer, [messageData]);
   })();
 
   return { updatesResult: { newUpdates: viewerUpdates }, newMessageInfos };
 }
 
 async function leaveThread(
   viewer: Viewer,
   request: LeaveThreadRequest,
 ): Promise<LeaveThreadResult> {
   if (!viewer.loggedIn) {
     throw new ServerError('not_logged_in');
   }
 
   const [fetchThreadResult, hasPermission] = await Promise.all([
     fetchThreadInfos(viewer, { threadID: request.threadID }),
     checkThreadPermission(
       viewer,
       request.threadID,
       threadPermissions.LEAVE_THREAD,
     ),
   ]);
 
   const threadInfo = fetchThreadResult.threadInfos[request.threadID];
 
   if (!viewerIsMember(threadInfo)) {
     return {
       updatesResult: { newUpdates: [] },
     };
   }
 
   if (!hasPermission) {
     throw new ServerError('invalid_parameters');
   }
 
   const viewerID = viewer.userID;
   if (threadHasAdminRole(threadInfo)) {
     let otherUsersExist = false;
     let otherAdminsExist = false;
     for (const member of threadInfo.members) {
       const role = member.role;
       if (!role || member.id === viewerID) {
         continue;
       }
       otherUsersExist = true;
       if (roleIsAdminRole(threadInfo.roles[role])) {
         otherAdminsExist = true;
         break;
       }
     }
     if (otherUsersExist && !otherAdminsExist) {
       throw new ServerError('invalid_parameters');
     }
   }
 
   const changeset = await changeRole(request.threadID, [viewerID], 0);
   const { viewerUpdates } = await commitMembershipChangeset(viewer, changeset);
 
   const messageData = {
     type: messageTypes.LEAVE_THREAD,
     threadID: request.threadID,
     creatorID: viewerID,
     time: Date.now(),
   };
   await createMessages(viewer, [messageData]);
 
   return { updatesResult: { newUpdates: viewerUpdates } };
 }
 
 type UpdateThreadOptions = Partial<{
   +forceAddMembers: boolean,
   +forceUpdateRoot: boolean,
   +silenceMessages: boolean,
   +ignorePermissions: boolean,
 }>;
 
 async function updateThread(
   viewer: Viewer,
   request: UpdateThreadRequest,
   options?: UpdateThreadOptions,
 ): Promise<ChangeThreadSettingsResult> {
   if (!viewer.loggedIn) {
     throw new ServerError('not_logged_in');
   }
   const forceAddMembers = options?.forceAddMembers ?? false;
   const forceUpdateRoot = options?.forceUpdateRoot ?? false;
   const silenceMessages = options?.silenceMessages ?? false;
   const ignorePermissions =
     (options?.ignorePermissions && viewer.isScriptViewer) ?? false;
 
   const changedFields: { [string]: string | number } = {};
   const sqlUpdate: { [string]: ?string | number } = {};
   const untrimmedName = request.changes.name;
   if (untrimmedName !== undefined && untrimmedName !== null) {
     const name = firstLine(untrimmedName);
     if (name.search(validChatNameRegex) === -1) {
       throw new ServerError('invalid_chat_name');
     }
     changedFields.name = name;
     sqlUpdate.name = name;
   }
   const { description } = request.changes;
   if (description !== undefined && description !== null) {
     changedFields.description = description;
     sqlUpdate.description = description;
   }
   if (request.changes.color) {
     const color = request.changes.color.toLowerCase();
     changedFields.color = color;
     sqlUpdate.color = color;
   }
   const { parentThreadID } = request.changes;
   if (parentThreadID !== undefined) {
     // TODO some sort of message when this changes
     sqlUpdate.parent_thread_id = parentThreadID;
   }
 
   const { avatar } = request.changes;
   if (avatar) {
     changedFields.avatar =
       avatar.type !== 'remove' ? JSON.stringify(avatar) : '';
     sqlUpdate.avatar = avatar.type !== 'remove' ? JSON.stringify(avatar) : null;
   }
 
   const threadType = request.changes.type;
   if (threadType !== null && threadType !== undefined) {
     changedFields.type = threadType;
     sqlUpdate.type = threadType;
   }
 
   if (
     !ignorePermissions &&
     threadType !== null &&
     threadType !== undefined &&
     threadType !== threadTypes.COMMUNITY_OPEN_SUBTHREAD &&
     threadType !== threadTypes.COMMUNITY_SECRET_SUBTHREAD
   ) {
     throw new ServerError('invalid_parameters');
   }
 
   const newMemberIDs =
     request.changes.newMemberIDs && request.changes.newMemberIDs.length > 0
       ? [...new Set(request.changes.newMemberIDs)]
       : null;
 
   if (
     Object.keys(sqlUpdate).length === 0 &&
     !newMemberIDs &&
     !forceUpdateRoot
   ) {
     throw new ServerError('invalid_parameters');
   }
 
   const serverThreadInfosPromise = fetchServerThreadInfos({
     threadID: request.threadID,
   });
 
   const hasNecessaryPermissionsPromise = (async () => {
     if (ignorePermissions) {
       return;
     }
     const checks = [];
     if (sqlUpdate.name !== undefined) {
       checks.push({
         check: 'permission',
         permission: threadPermissions.EDIT_THREAD_NAME,
       });
     }
     if (sqlUpdate.description !== undefined) {
       checks.push({
         check: 'permission',
         permission: threadPermissions.EDIT_THREAD_DESCRIPTION,
       });
     }
     if (sqlUpdate.color !== undefined) {
       checks.push({
         check: 'permission',
         permission: threadPermissions.EDIT_THREAD_COLOR,
       });
     }
     if (sqlUpdate.avatar !== undefined) {
       checks.push({
         check: 'permission',
         permission: threadPermissions.EDIT_THREAD_AVATAR,
       });
     }
     if (parentThreadID !== undefined || sqlUpdate.type !== undefined) {
       checks.push({
         check: 'permission',
         permission: threadPermissions.EDIT_PERMISSIONS,
       });
     }
     if (newMemberIDs) {
       checks.push({
         check: 'permission',
         permission: threadPermissions.ADD_MEMBERS,
       });
     }
     const hasNecessaryPermissions = await checkThread(
       viewer,
       request.threadID,
       checks,
     );
     if (!hasNecessaryPermissions) {
       throw new ServerError('invalid_credentials');
     }
   })();
 
   const [serverThreadInfos] = await Promise.all([
     serverThreadInfosPromise,
     hasNecessaryPermissionsPromise,
   ]);
 
   const serverThreadInfo = serverThreadInfos.threadInfos[request.threadID];
   if (!serverThreadInfo) {
     throw new ServerError('internal_error');
   }
 
   // Threads with source message should be visible to everyone, but we can't
   // guarantee it for COMMUNITY_SECRET_SUBTHREAD threads so we forbid it for
   // now. In the future, if we want to support this, we would need to unlink the
   // source message.
   if (
     threadType !== null &&
     threadType !== undefined &&
     threadType !== threadTypes.SIDEBAR &&
     threadType !== threadTypes.COMMUNITY_OPEN_SUBTHREAD &&
     serverThreadInfo.sourceMessageID
   ) {
     throw new ServerError('invalid_parameters');
   }
 
   // You can't change the parent thread of a current or former SIDEBAR
   if (parentThreadID !== undefined && serverThreadInfo.sourceMessageID) {
     throw new ServerError('invalid_parameters');
   }
 
   const oldThreadType = serverThreadInfo.type;
   const oldParentThreadID = serverThreadInfo.parentThreadID;
   const oldContainingThreadID = serverThreadInfo.containingThreadID;
   const oldCommunity = serverThreadInfo.community;
   const oldDepth = serverThreadInfo.depth;
 
   const nextThreadType =
     threadType !== null && threadType !== undefined
       ? threadType
       : oldThreadType;
   let nextParentThreadID =
     parentThreadID !== undefined ? parentThreadID : oldParentThreadID;
 
   // Does the new thread type preclude a parent?
   if (
     threadType !== undefined &&
     threadType !== null &&
     getThreadTypeParentRequirement(threadType) === 'disabled' &&
     nextParentThreadID !== null
   ) {
     nextParentThreadID = null;
     sqlUpdate.parent_thread_id = null;
   }
 
   // Does the new thread type require a parent?
   if (
     threadType !== undefined &&
     threadType !== null &&
     getThreadTypeParentRequirement(threadType) === 'required' &&
     nextParentThreadID === null
   ) {
     throw new ServerError('no_parent_thread_specified');
   }
 
   const determineThreadAncestryPromise = determineThreadAncestry(
     nextParentThreadID,
     nextThreadType,
   );
 
   const confirmParentPermissionPromise = (async () => {
     if (ignorePermissions || !nextParentThreadID) {
       return;
     }
     if (
       nextParentThreadID === oldParentThreadID &&
       (nextThreadType === threadTypes.SIDEBAR) ===
         (oldThreadType === threadTypes.SIDEBAR)
     ) {
       return;
     }
     const hasParentPermission = await checkThreadPermission(
       viewer,
       nextParentThreadID,
       nextThreadType === threadTypes.SIDEBAR
         ? threadPermissions.CREATE_SIDEBARS
         : threadPermissions.CREATE_SUBCHANNELS,
     );
     if (!hasParentPermission) {
       throw new ServerError('invalid_parameters');
     }
   })();
 
   const rolesNeedUpdate = forceUpdateRoot || nextThreadType !== oldThreadType;
 
   const validateNewMembersPromise = (async () => {
     if (!newMemberIDs || ignorePermissions) {
       return;
     }
 
     const defaultRolePermissionsPromise = (async () => {
       let rolePermissions;
       if (!rolesNeedUpdate) {
         const rolePermissionsQuery = SQL`
           SELECT r.permissions
           FROM threads t
           LEFT JOIN roles r ON r.special_role = ${specialRoles.DEFAULT_ROLE} 
             AND r.thread = ${request.threadID}
           WHERE t.id = ${request.threadID}
         `;
         const [result] = await dbQuery(rolePermissionsQuery);
         if (result.length > 0) {
           rolePermissions = JSON.parse(result[0].permissions);
         }
       }
       if (!rolePermissions) {
         rolePermissions = getRolePermissionBlobs(nextThreadType).Members;
       }
       return rolePermissions;
     })();
 
     const [defaultRolePermissions, nextThreadAncestry] = await Promise.all([
       defaultRolePermissionsPromise,
       determineThreadAncestryPromise,
     ]);
 
     const containingThreadIDForPossibleMemberResolution =
       determineThreadAncestryForPossibleMemberResolution(
         nextParentThreadID,
         nextThreadAncestry.containingThreadID,
       );
 
     const { newMemberIDs: validatedIDs } = await validateCandidateMembers(
       viewer,
       { newMemberIDs },
       {
         threadType: nextThreadType,
         parentThreadID: nextParentThreadID,
         containingThreadID: containingThreadIDForPossibleMemberResolution,
         defaultRolePermissions,
         communityID: nextThreadAncestry.community,
       },
       { requireRelationship: !forceAddMembers },
     );
     if (
       validatedIDs &&
       Number(validatedIDs?.length) < Number(newMemberIDs?.length)
     ) {
       throw new ServerError('invalid_credentials');
     }
   })();
 
   const { nextThreadAncestry } = await promiseAll({
     nextThreadAncestry: determineThreadAncestryPromise,
     confirmParentPermissionPromise,
     validateNewMembersPromise,
   });
   if (nextThreadAncestry.containingThreadID !== oldContainingThreadID) {
     sqlUpdate.containing_thread_id = nextThreadAncestry.containingThreadID;
   }
   if (nextThreadAncestry.community !== oldCommunity) {
     if (!ignorePermissions) {
       throw new ServerError('invalid_parameters');
     }
     sqlUpdate.community = nextThreadAncestry.community;
   }
   if (nextThreadAncestry.depth !== oldDepth) {
     sqlUpdate.depth = nextThreadAncestry.depth;
   }
 
   const updateQueryPromise = (async () => {
     if (Object.keys(sqlUpdate).length === 0) {
       return;
     }
 
     const { avatar: avatarUpdate, ...nonAvatarUpdates } = sqlUpdate;
     const updatePromises = [];
 
     if (Object.keys(nonAvatarUpdates).length > 0) {
       const nonAvatarUpdateQuery = SQL`
         UPDATE threads
         SET ${nonAvatarUpdates}
         WHERE id = ${request.threadID}
       `;
       updatePromises.push(dbQuery(nonAvatarUpdateQuery));
     }
 
     if (avatarUpdate !== undefined) {
       const avatarUploadID =
         avatar && (avatar.type === 'image' || avatar.type === 'encrypted_image')
           ? avatar.uploadID
           : null;
 
       const avatarUpdateQuery = SQL`
         START TRANSACTION;
 
         UPDATE uploads
         SET container = NULL
         WHERE container = ${request.threadID}
           AND (
             ${avatarUploadID} IS NULL
             OR EXISTS (
               SELECT 1
               FROM uploads
               WHERE id = ${avatarUploadID}
                 AND ${avatarUploadID} IS NOT NULL
                 AND uploader = ${viewer.userID}
                 AND container IS NULL
                 AND user_container IS NULL
                 AND thread IS NULL
              )
           );
 
         UPDATE uploads
         SET container = ${request.threadID}
         WHERE id = ${avatarUploadID}
           AND ${avatarUploadID} IS NOT NULL
           AND uploader = ${viewer.userID}
           AND container IS NULL
           AND user_container IS NULL
           AND thread IS NULL;
 
         UPDATE threads
         SET avatar = ${avatarUpdate}
         WHERE id = ${request.threadID}
           AND (
             ${avatarUploadID} IS NULL
             OR EXISTS (
               SELECT 1
               FROM uploads
               WHERE id = ${avatarUploadID}
                 AND ${avatarUploadID} IS NOT NULL
                 AND uploader = ${viewer.userID}
                 AND container = ${request.threadID}
                 AND thread IS NULL
             )
           );
 
         COMMIT;
       `;
 
       updatePromises.push(
         dbQuery(avatarUpdateQuery, { multipleStatements: true }),
       );
     }
 
     await Promise.all(updatePromises);
   })();
 
   const updateRolesPromise = (async () => {
     if (rolesNeedUpdate) {
       await updateRoles(viewer, request.threadID, nextThreadType);
     }
   })();
 
   const addMembersChangesetPromise: Promise<?MembershipChangeset> =
     (async () => {
       if (!newMemberIDs) {
         return undefined;
       }
       await Promise.all([updateQueryPromise, updateRolesPromise]);
       return await changeRole(request.threadID, newMemberIDs, null, {
         setNewMembersToUnread: true,
       });
     })();
 
   const recalculatePermissionsChangesetPromise: Promise<?MembershipChangeset> =
     (async () => {
       const threadRootChanged =
         rolesNeedUpdate || nextParentThreadID !== oldParentThreadID;
       if (!threadRootChanged) {
         return undefined;
       }
       await Promise.all([updateQueryPromise, updateRolesPromise]);
       return await recalculateThreadPermissions(request.threadID);
     })();
 
   const [addMembersChangeset, recalculatePermissionsChangeset] =
     await Promise.all([
       addMembersChangesetPromise,
       recalculatePermissionsChangesetPromise,
       updateQueryPromise,
       updateRolesPromise,
     ]);
 
   const membershipRows: Array<MembershipRow> = [];
   const relationshipChangeset = new RelationshipChangeset();
   if (recalculatePermissionsChangeset) {
     const {
       membershipRows: recalculateMembershipRows,
       relationshipChangeset: recalculateRelationshipChangeset,
     } = recalculatePermissionsChangeset;
     membershipRows.push(...recalculateMembershipRows);
     relationshipChangeset.addAll(recalculateRelationshipChangeset);
   }
   let addedMemberIDs;
   if (addMembersChangeset) {
     const {
       membershipRows: addMembersMembershipRows,
       relationshipChangeset: addMembersRelationshipChangeset,
     } = addMembersChangeset;
     addedMemberIDs = addMembersMembershipRows
       .filter(
         row =>
           row.operation === 'save' &&
           row.threadID === request.threadID &&
           Number(row.role) > 0,
       )
       .map(row => row.userID);
     membershipRows.push(...addMembersMembershipRows);
     relationshipChangeset.addAll(addMembersRelationshipChangeset);
   }
 
   const changeset = { membershipRows, relationshipChangeset };
   const { viewerUpdates } = await commitMembershipChangeset(viewer, changeset, {
     // This forces an update for this thread,
     // regardless of whether any membership rows are changed
     changedThreadIDs:
       Object.keys(sqlUpdate).length > 0
         ? new Set([request.threadID])
         : new Set(),
     // last_message will be updated automatically if we send a message,
     // so we only need to handle it here when we silence new messages
     updateMembershipsLastMessage: silenceMessages,
   });
 
   let newMessageInfos: Array<RawMessageInfo> = [];
   if (!silenceMessages) {
     const time = Date.now();
     const messageDatas: Array<MessageData> = [];
     for (const fieldName in changedFields) {
       const newValue = changedFields[fieldName];
       messageDatas.push({
         type: messageTypes.CHANGE_SETTINGS,
         threadID: request.threadID,
         creatorID: viewer.userID,
         time,
         field: fieldName,
         value: newValue,
       });
     }
     if (addedMemberIDs && addedMemberIDs.length > 0) {
       messageDatas.push({
         type: messageTypes.ADD_MEMBERS,
         threadID: request.threadID,
         creatorID: viewer.userID,
         time,
         addedUserIDs: addedMemberIDs,
       });
     }
     newMessageInfos = await createMessages(viewer, messageDatas);
   }
 
   return { updatesResult: { newUpdates: viewerUpdates }, newMessageInfos };
 }
 
 async function joinThread(
   viewer: Viewer,
   request: ServerThreadJoinRequest,
 ): Promise<ThreadJoinResult> {
   if (!viewer.loggedIn) {
     throw new ServerError('not_logged_in');
   }
 
   const communityFarcasterChannelTagPromise = fetchCommunityFarcasterChannelTag(
     viewer,
     request.threadID,
   );
 
   const permissionPromise = (async () => {
     if (request.inviteLinkSecret) {
       return await checkIfInviteLinkIsValid(
         request.inviteLinkSecret,
         request.threadID,
       );
     }
 
     const threadPermissionPromise = checkThreadPermission(
       viewer,
       request.threadID,
       threadPermissions.JOIN_THREAD,
     );
 
     const [threadPermission, communityFarcasterChannelTag] = await Promise.all([
       threadPermissionPromise,
       communityFarcasterChannelTagPromise,
     ]);
 
     return threadPermission || !!communityFarcasterChannelTag;
   })();
 
   const [isMember, hasPermission, communityFarcasterChannelTag] =
     await Promise.all([
       viewerHasPositiveRole(viewer, request.threadID),
       permissionPromise,
       communityFarcasterChannelTagPromise,
     ]);
 
   if (!hasPermission) {
     throw new ServerError('invalid_parameters');
   }
 
   const { calendarQuery } = request;
   if (isMember) {
     const response: ThreadJoinResult = {
       rawMessageInfos: [],
       truncationStatuses: {},
       userInfos: {},
       updatesResult: {
         newUpdates: [],
       },
     };
     return response;
   }
 
   if (calendarQuery) {
     const threadFilterIDs = filteredThreadIDs(calendarQuery.filters);
     if (
       !threadFilterIDs ||
       threadFilterIDs.size !== 1 ||
       threadFilterIDs.values().next().value !== request.threadID
     ) {
       throw new ServerError('invalid_parameters');
     }
   }
 
   let role = null;
   if (communityFarcasterChannelTag) {
     role = await fetchUserRoleForThread(
       viewer,
       request.threadID,
       communityFarcasterChannelTag,
     );
   }
 
   const changeset = await changeRole(request.threadID, [viewer.userID], role, {
     defaultSubscription: request.defaultSubscription,
   });
 
   const membershipResult = await commitMembershipChangeset(viewer, changeset, {
     calendarQuery,
   });
 
   if (request.inviteLinkSecret) {
     ignorePromiseRejections(reportLinkUsage(request.inviteLinkSecret));
   }
 
   const messageData = {
     type: messageTypes.JOIN_THREAD,
     threadID: request.threadID,
     creatorID: viewer.userID,
     time: Date.now(),
   };
   const newMessages = await createMessages(viewer, [messageData]);
 
   return {
     rawMessageInfos: newMessages,
     truncationStatuses: {},
     userInfos: membershipResult.userInfos,
     updatesResult: {
       newUpdates: membershipResult.viewerUpdates,
     },
   };
 }
 
 async function fetchUserRoleForThread(
   viewer: Viewer,
   threadID: string,
   communityFarcasterChannelTag: string,
 ): Promise<string | null> {
   const farcasterID = await getUserFarcasterID(viewer.userID);
 
   if (!farcasterID) {
     return null;
   }
 
   const leadsChannel = await userLeadsChannel(
     communityFarcasterChannelTag,
     farcasterID,
   );
   if (!leadsChannel) {
     return null;
   }
 
   const roleInfos = await fetchRoles(threadID);
   for (const roleInfo of roleInfos) {
     if (roleInfo.specialRole === specialRoles.ADMIN_ROLE) {
       return roleInfo.id;
     }
   }
 
   return null;
 }
 
 async function getUserFarcasterID(userID: string): Promise<?string> {
   const cachedUserIdentity = await redisCache.getUserIdentity(userID);
   if (cachedUserIdentity) {
     return cachedUserIdentity.farcasterID;
   }
 
   const response = await findUserIdentities([userID]);
   const userIdentity = response.identities[userID];
   if (!userIdentity) {
     return null;
   }
 
   ignorePromiseRejections(redisCache.setUserIdentity(userID, userIdentity));
   return userIdentity.farcasterID;
 }
 
 async function userLeadsChannel(
   communityFarcasterChannelTag: string,
   farcasterID: string,
 ) {
   const cachedChannelInfo = await redisCache.getChannelInfo(
     communityFarcasterChannelTag,
   );
   if (cachedChannelInfo) {
     return cachedChannelInfo.lead.fid === parseInt(farcasterID);
   }
 
   // In the background, we fetch and cache followed channels
   ignorePromiseRejections(
     (async () => {
       const followedChannels =
         await neynarClient?.fetchFollowedFarcasterChannels(farcasterID);
       if (followedChannels) {
         await Promise.allSettled(
           followedChannels.map(followedChannel =>
             redisCache.setChannelInfo(followedChannel.id, followedChannel),
           ),
         );
       }
     })(),
   );
 
-  const channelInfo = await neynarClient?.fetchFarcasterChannelByID(
+  const channelInfo = await fcCache?.getFarcasterChannelForChannelID(
     communityFarcasterChannelTag,
   );
   if (channelInfo) {
     return channelInfo.lead.fid === parseInt(farcasterID);
   }
 
   return false;
 }
 
 async function toggleMessagePinForThread(
   viewer: Viewer,
   request: ToggleMessagePinRequest,
 ): Promise<ToggleMessagePinResult> {
   const { messageID, action } = request;
 
   const targetMessage = await fetchMessageInfoByID(viewer, messageID);
   if (!targetMessage) {
     throw new ServerError('invalid_parameters');
   }
 
   const { threadID } = targetMessage;
   const fetchServerThreadInfosResult = await fetchServerThreadInfos({
     threadID,
   });
   const { threadInfos: rawThreadInfos } = rawThreadInfosFromServerThreadInfos(
     viewer,
     fetchServerThreadInfosResult,
   );
   const rawThreadInfo = rawThreadInfos[threadID];
 
   const canTogglePin = canToggleMessagePin(targetMessage, rawThreadInfo);
   if (!canTogglePin) {
     throw new ServerError('invalid_parameters');
   }
 
   const pinnedValue = action === 'pin' ? 1 : 0;
   const pinTimeValue = action === 'pin' ? Date.now() : null;
   const pinnedCountValue = action === 'pin' ? 1 : -1;
 
   const query = SQL`
     UPDATE messages AS m, threads AS t
     SET m.pinned = ${pinnedValue},
       m.pin_time = ${pinTimeValue},
       t.pinned_count = t.pinned_count + ${pinnedCountValue}
     WHERE m.id = ${messageID}
       AND m.thread = ${threadID}
       AND t.id = ${threadID}
       AND m.pinned != ${pinnedValue}
   `;
 
   const [result] = await dbQuery(query);
 
   if (result.affectedRows === 0) {
     return {
       newMessageInfos: [],
       threadID,
     };
   }
 
   const createMessagesAsync = async () => {
     const messageData = {
       type: messageTypes.TOGGLE_PIN,
       threadID,
       targetMessageID: messageID,
       action,
       pinnedContent: getPinnedContentFromMessage(targetMessage),
       creatorID: viewer.userID,
       time: Date.now(),
     };
     const newMessageInfos = await createMessages(viewer, [messageData]);
     return newMessageInfos;
   };
 
   const createUpdatesAsync = async () => {
     const { threadInfos: serverThreadInfos } = fetchServerThreadInfosResult;
     const time = Date.now();
     const updates = [];
     for (const member of serverThreadInfos[threadID].members) {
       updates.push({
         userID: member.id,
         time,
         threadID,
         type: updateTypes.UPDATE_THREAD,
       });
     }
     await createUpdates(updates);
   };
 
   const [newMessageInfos] = await Promise.all([
     createMessagesAsync(),
     createUpdatesAsync(),
   ]);
 
   return {
     newMessageInfos,
     threadID,
   };
 }
 
 export {
   updateRole,
   removeMembers,
   leaveThread,
   updateThread,
   joinThread,
   toggleMessagePinForThread,
 };
diff --git a/keyserver/src/utils/fc-cache.js b/keyserver/src/utils/fc-cache.js
index 2a3c22ebc..34f251c5a 100644
--- a/keyserver/src/utils/fc-cache.js
+++ b/keyserver/src/utils/fc-cache.js
@@ -1,28 +1,30 @@
 // @flow
 
 import {
   getFCNames as baseGetFCNames,
   type GetFCNames,
   type BaseFCNamesInfo,
 } from 'lib/utils/farcaster-helpers.js';
 import { FCCache } from 'lib/utils/fc-cache.js';
 import { NeynarClient } from 'lib/utils/neynar-client.js';
 
 import { getNeynarConfig } from './neynar-utils.js';
 
-let getFCNames: ?GetFCNames;
 let neynarClient: ?NeynarClient;
+let fcCache: ?FCCache;
+let getFCNames: ?GetFCNames;
 async function initFCCache() {
   const neynarSecret = await getNeynarConfig();
 
   const neynarKey = neynarSecret?.key;
   if (!neynarKey) {
     return;
   }
   neynarClient = new NeynarClient(neynarKey);
-  const fcCache = new FCCache(neynarClient);
+  const newFCCache = new FCCache(neynarClient);
+  fcCache = newFCCache;
   getFCNames = <T: ?BaseFCNamesInfo>(users: $ReadOnlyArray<T>): Promise<T[]> =>
-    baseGetFCNames(fcCache, users);
+    baseGetFCNames(newFCCache, users);
 }
 
-export { initFCCache, getFCNames, neynarClient };
+export { initFCCache, neynarClient, fcCache, getFCNames };
diff --git a/native/community-settings/tag-farcaster-channel/tag-farcaster-channel-by-name.react.js b/native/community-settings/tag-farcaster-channel/tag-farcaster-channel-by-name.react.js
index 280abd881..cbbcbf1dc 100644
--- a/native/community-settings/tag-farcaster-channel/tag-farcaster-channel-by-name.react.js
+++ b/native/community-settings/tag-farcaster-channel/tag-farcaster-channel-by-name.react.js
@@ -1,154 +1,154 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 import { View, Text } from 'react-native';
 
 import { NeynarClientContext } from 'lib/components/neynar-client-provider.react.js';
 import {
   tagFarcasterChannelErrorMessages,
   useCreateFarcasterChannelTag,
 } from 'lib/shared/community-utils.js';
 
 import type { TagFarcasterChannelNavigationProp } from './tag-farcaster-channel-navigator.react.js';
 import PrimaryButton from '../../components/primary-button.react.js';
 import TextInput from '../../components/text-input.react.js';
 import type { NavigationRoute } from '../../navigation/route-names.js';
 import { useStyles, useColors } from '../../themes/colors.js';
 
 export type TagFarcasterChannelByNameParams = {
   +communityID: string,
 };
 
 type Props = {
   +navigation: TagFarcasterChannelNavigationProp<'TagFarcasterChannelByName'>,
   +route: NavigationRoute<'TagFarcasterChannelByName'>,
 };
 
 function TagFarcasterChannelByName(prop: Props): React.Node {
   const { navigation, route } = prop;
 
   const { goBack } = navigation;
   const { communityID } = route.params;
 
   const styles = useStyles(unboundStyles);
   const colors = useColors();
 
   const [channelSelectionText, setChannelSelectionText] =
     React.useState<string>('');
   const [error, setError] = React.useState<?string>(null);
 
   const neynarClientContext = React.useContext(NeynarClientContext);
   invariant(neynarClientContext, 'NeynarClientContext is missing');
 
   const { createTag, isLoading } = useCreateFarcasterChannelTag(
     communityID,
     setError,
     goBack,
   );
 
   const onPressTagChannel = React.useCallback(async () => {
     const channelInfo =
-      await neynarClientContext.client.fetchFarcasterChannelByID(
+      await neynarClientContext.fcCache.getFarcasterChannelForChannelID(
         channelSelectionText,
       );
 
     if (!channelInfo) {
       setError('channel_not_found');
       return;
     }
 
     createTag(channelInfo.id);
-  }, [channelSelectionText, createTag, neynarClientContext.client]);
+  }, [channelSelectionText, createTag, neynarClientContext.fcCache]);
 
   const errorMessage = React.useMemo(() => {
     if (!error) {
       return <View style={styles.errorPlaceholder} />;
     }
 
     return (
       <Text style={styles.error}>
         {tagFarcasterChannelErrorMessages[error] ?? 'Unknown error.'}
       </Text>
     );
   }, [error, styles.error, styles.errorPlaceholder]);
 
   let submitButtonVariant = 'disabled';
   if (isLoading) {
     submitButtonVariant = 'loading';
   } else if (channelSelectionText.length > 0) {
     submitButtonVariant = 'enabled';
   }
 
   return (
     <View style={styles.container}>
       <Text style={styles.header}>CHANNEL NAME</Text>
       <View style={styles.panelSectionContainer}>
         <View style={styles.inputContainer}>
           <TextInput
             style={styles.input}
             value={channelSelectionText}
             onChangeText={setChannelSelectionText}
             placeholder="Channel name"
             placeholderTextColor={colors.panelForegroundTertiaryLabel}
             autoCorrect={false}
             autoCapitalize="none"
           />
         </View>
         {errorMessage}
         <PrimaryButton
           onPress={onPressTagChannel}
           label="Tag channel"
           variant={submitButtonVariant}
         />
       </View>
     </View>
   );
 }
 
 const unboundStyles = {
   container: {
     paddingTop: 24,
   },
   header: {
     color: 'panelBackgroundLabel',
     fontSize: 12,
     fontWeight: '400',
     paddingBottom: 4,
     paddingHorizontal: 16,
   },
   panelSectionContainer: {
     backgroundColor: 'panelForeground',
     padding: 16,
     borderBottomColor: 'panelSeparator',
     borderBottomWidth: 1,
     borderTopColor: 'panelSeparator',
     borderTopWidth: 1,
   },
   inputContainer: {
     flexDirection: 'row',
     justifyContent: 'space-between',
     paddingHorizontal: 16,
     paddingVertical: 12,
     borderWidth: 1,
     borderColor: 'panelSecondaryForegroundBorder',
     borderRadius: 8,
     marginBottom: 8,
   },
   input: {
     color: 'panelForegroundLabel',
     fontSize: 16,
   },
   error: {
     fontSize: 12,
     fontWeight: '400',
     lineHeight: 18,
     textAlign: 'center',
     color: 'redText',
   },
   errorPlaceholder: {
     height: 18,
   },
 };
 
 export default TagFarcasterChannelByName;
diff --git a/web/tag-farcaster-channel/create-farcaster-channel-tag-modal.react.js b/web/tag-farcaster-channel/create-farcaster-channel-tag-modal.react.js
index 52ecf6630..c95b0c644 100644
--- a/web/tag-farcaster-channel/create-farcaster-channel-tag-modal.react.js
+++ b/web/tag-farcaster-channel/create-farcaster-channel-tag-modal.react.js
@@ -1,184 +1,182 @@
 // @flow
 
 import classNames from 'classnames';
 import invariant from 'invariant';
 import * as React from 'react';
 
 import { useModalContext } from 'lib/components/modal-provider.react.js';
 import { NeynarClientContext } from 'lib/components/neynar-client-provider.react.js';
 import {
   tagFarcasterChannelErrorMessages,
   useCreateFarcasterChannelTag,
 } from 'lib/shared/community-utils.js';
 import { useCurrentUserFID } from 'lib/utils/farcaster-utils.js';
 
 import css from './create-farcaster-channel-tag-modal.css';
 import Button, { buttonThemes } from '../components/button.react.js';
 import Dropdown, { type DropdownOption } from '../components/dropdown.react.js';
 import Input from '../modals/input.react.js';
 import Modal from '../modals/modal.react.js';
 
 type Props = {
   +communityID: string,
 };
 
 function CreateFarcasterChannelTagModal(props: Props): React.Node {
   const { communityID } = props;
 
   const { popModal } = useModalContext();
 
   const fid = useCurrentUserFID();
   invariant(fid, 'FID should be set');
 
   const neynarClientContext = React.useContext(NeynarClientContext);
   invariant(neynarClientContext, 'NeynarClientContext is missing');
 
-  const { client } = neynarClientContext;
+  const { client, fcCache } = neynarClientContext;
 
   const [channelOptions, setChannelOptions] = React.useState<
     $ReadOnlyArray<DropdownOption>,
   >([]);
   const [selectedOption, setSelectedOption] = React.useState<?string>(null);
   const [channelNameText, setChannelNameText] = React.useState<string>('');
   const [error, setError] = React.useState<?string>(null);
 
   React.useEffect(() => {
     void (async () => {
       const channels = await client.fetchFollowedFarcasterChannels(fid);
 
       const sortedChannels = channels
         .sort((a, b) => a.id.localeCompare(b.id))
         .map(channel => ({
           id: channel.id,
           name: `/${channel.id}`,
         }));
 
       const options = [{ id: 'other', name: 'Other' }, ...sortedChannels];
 
       setChannelOptions(options);
     })();
   }, [client, fid]);
 
   const onChangeSelectedOption = React.useCallback((option: string) => {
     setError(null);
     setChannelNameText('');
     setSelectedOption(option);
   }, []);
 
   const onChangeChannelNameText = React.useCallback(
     (event: SyntheticEvent<HTMLInputElement>) => {
       setChannelNameText(event.currentTarget.value);
     },
     [],
   );
 
   const { createTag, isLoading } = useCreateFarcasterChannelTag(
     communityID,
     setError,
     popModal,
   );
 
   const onClickTagChannel = React.useCallback(async () => {
     if (!selectedOption) {
       return;
     }
 
     if (selectedOption !== 'other') {
       createTag(selectedOption);
       return;
     }
 
     const channelInfo =
-      await neynarClientContext.client.fetchFarcasterChannelByID(
-        channelNameText,
-      );
+      await fcCache.getFarcasterChannelForChannelID(channelNameText);
     if (!channelInfo) {
       setError('channel_not_found');
       return;
     }
     createTag(channelInfo.id);
-  }, [channelNameText, createTag, neynarClientContext.client, selectedOption]);
+  }, [channelNameText, createTag, fcCache, selectedOption]);
 
   const buttonDisabled =
     isLoading ||
     !selectedOption ||
     (selectedOption === 'other' && !channelNameText);
 
   const primaryButton = React.useMemo(() => {
     return (
       <Button
         variant="filled"
         buttonColor={buttonThemes.standard}
         onClick={onClickTagChannel}
         disabled={buttonDisabled}
       >
         Create tag
       </Button>
     );
   }, [onClickTagChannel, buttonDisabled]);
 
   const tagFarcasterChannelByNameContainerClassName = classNames(
     css.tagFarcasterChannelByNameContainer,
     {
       [css.tagFarcasterChannelByNameContainerVisible]:
         selectedOption === 'other',
     },
   );
 
   const errorMessageClassName = classNames(css.errorMessage, {
     [css.errorMessageVisible]: error,
   });
 
   const errorMessage =
     error && tagFarcasterChannelErrorMessages[error]
       ? tagFarcasterChannelErrorMessages[error]
       : 'Unknown error.';
 
   const createFarcasterChannelTagModal = React.useMemo(
     () => (
       <Modal
         name="Create a tag"
         onClose={popModal}
         size="large"
         primaryButton={primaryButton}
       >
         <div className={css.inputLabel}>Farcaster channel</div>
         <div className={css.dropdownInputContainer}>
           <Dropdown
             options={channelOptions}
             defaultLabel="Select a channel"
             activeSelection={selectedOption}
             setActiveSelection={onChangeSelectedOption}
           />
         </div>
         <div className={tagFarcasterChannelByNameContainerClassName}>
           <div className={css.inputLabel}>Channel name</div>
           <div className={css.textInputContainer}>
             <Input
               type="text"
               value={channelNameText}
               onChange={onChangeChannelNameText}
             />
           </div>
         </div>
         <div className={errorMessageClassName}>{errorMessage}</div>
       </Modal>
     ),
     [
       channelNameText,
       channelOptions,
       errorMessage,
       errorMessageClassName,
       onChangeChannelNameText,
       onChangeSelectedOption,
       popModal,
       primaryButton,
       selectedOption,
       tagFarcasterChannelByNameContainerClassName,
     ],
   );
 
   return createFarcasterChannelTagModal;
 }
 
 export default CreateFarcasterChannelTagModal;