diff --git a/bots/api/COMMANDS.md b/bots/api/COMMANDS.md
index f90e8e08da..af7b0146f7 100644
--- a/bots/api/COMMANDS.md
+++ b/bots/api/COMMANDS.md
@@ -7,6 +7,7 @@ This file is generated automatically.
 - [APIDeleteMyAddress](#apideletemyaddress)
 - [APIShowMyAddress](#apishowmyaddress)
 - [APISetProfileAddress](#apisetprofileaddress)
+- [APISetUserDomain](#apisetuserdomain)
 - [APISetAddressSettings](#apisetaddresssettings)
 
 [Message commands](#message-commands)
@@ -246,6 +247,53 @@ ChatCmdError: Command error (only used in WebSockets API).
 ---
 
 
+### APISetUserDomain
+
+Set or remove SimpleX name of bot address. The name must be registered with the address short link.
+
+*Network usage*: interactive.
+
+**Parameters**:
+- userId: int64
+- simplexDomain: string?
+
+**Syntax**:
+
+```
+/_set domain <userId>[ <simplexDomain>]
+```
+
+```javascript
+'/_set domain ' + userId + (simplexDomain ? ' ' + simplexDomain : '') // JavaScript
+```
+
+```python
+'/_set domain ' + str(userId) + ((' ' + simplexDomain) if simplexDomain is not None else '') # Python
+```
+
+**Responses**:
+
+UserProfileUpdated: User profile updated.
+- type: "userProfileUpdated"
+- user: [User](./TYPES.md#user)
+- fromProfile: [Profile](./TYPES.md#profile)
+- toProfile: [Profile](./TYPES.md#profile)
+- updateSummary: [UserProfileUpdateSummary](./TYPES.md#userprofileupdatesummary)
+
+UserProfileNoChange: User profile was not changed.
+- type: "userProfileNoChange"
+- user: [User](./TYPES.md#user)
+
+ChatCmdError: Command error (only used in WebSockets API).
+- type: "chatCmdError"
+- chatError: [ChatError](./TYPES.md#chaterror)
+
+**Errors**:
+- SimplexDomainNotReady: The name does not resolve to the address short link.
+
+---
+
+
 ### APISetAddressSettings
 
 Set bot address settings.
diff --git a/bots/src/API/Docs/Commands.hs b/bots/src/API/Docs/Commands.hs
index 4ffba7bfbe..79820605a8 100644
--- a/bots/src/API/Docs/Commands.hs
+++ b/bots/src/API/Docs/Commands.hs
@@ -81,6 +81,14 @@ chatCommandsDocsData =
         ("APIDeleteMyAddress", [], "Delete bot address.", ["CRUserContactLinkDeleted", "CRChatCmdError"], [], Just UNBackground, "/_delete_address " <> Param "userId"),
         ("APIShowMyAddress", [], "Get bot address and settings.", ["CRUserContactLink", "CRChatCmdError"], [], Nothing, "/_show_address " <> Param "userId"),
         ("APISetProfileAddress", [], "Add address to bot profile.", ["CRUserProfileUpdated", "CRUserProfileNoChange", "CRChatCmdError"], [], Just UNInteractive, "/_profile_address " <> Param "userId" <> " " <> OnOff "enable"),
+        ( "APISetUserDomain",
+          [],
+          "Set or remove SimpleX name of bot address. The name must be registered with the address short link.",
+          ["CRUserProfileUpdated", "CRUserProfileNoChange", "CRChatCmdError"],
+          [TD "CESimplexDomainNotReady" "The name does not resolve to the address short link"],
+          Just UNInteractive,
+          "/_set domain " <> Param "userId" <> Optional "" (" " <> Param "$0") "simplexDomain"
+        ),
         ("APISetAddressSettings", [], "Set bot address settings.", ["CRUserContactLinkUpdated", "CRChatCmdError"], [], Just UNInteractive, "/_address_settings " <> Param "userId" <> OnOffParam "pq_ratchet" "pqRatchet" Nothing <> " " <> Json "settings")
       ]
     ),
@@ -438,7 +446,6 @@ undocumentedCommands =
     "APISetServerOperators",
     "APISetUserContactReceipts",
     "APISetUserGroupReceipts",
-    "APISetUserDomain",
     "APISetUserServers",
     "APISetUserUIThemes",
     "APIStandaloneFileInfo",
diff --git a/packages/simplex-chat-client/types/typescript/src/commands.ts b/packages/simplex-chat-client/types/typescript/src/commands.ts
index c217ef944c..cc01ae9472 100644
--- a/packages/simplex-chat-client/types/typescript/src/commands.ts
+++ b/packages/simplex-chat-client/types/typescript/src/commands.ts
@@ -66,6 +66,21 @@ export namespace APISetProfileAddress {
   }
 }
 
+// Set or remove SimpleX name of bot address. The name must be registered with the address short link.
+// Network usage: interactive.
+export interface APISetUserDomain {
+  userId: number // int64
+  simplexDomain?: string
+}
+
+export namespace APISetUserDomain {
+  export type Response = CR.UserProfileUpdated | CR.UserProfileNoChange | CR.ChatCmdError
+
+  export function cmdString(self: APISetUserDomain): string {
+    return '/_set domain ' + self.userId + (self.simplexDomain ? ' ' + self.simplexDomain : '')
+  }
+}
+
 // Set bot address settings.
 // Network usage: interactive.
 export interface APISetAddressSettings {
diff --git a/packages/simplex-chat-nodejs/src/api.ts b/packages/simplex-chat-nodejs/src/api.ts
index ea8cff6ac0..8d4e75b181 100644
--- a/packages/simplex-chat-nodejs/src/api.ts
+++ b/packages/simplex-chat-nodejs/src/api.ts
@@ -422,7 +422,18 @@ export class ChatApi {
     const r = await this.sendChatCmd(CC.APISetAddressSettings.cmdString({userId, settings}))
     if (r.type !== "userContactLinkUpdated") {
       throw new ChatCommandError("error changing user contact address settings", r)
-    }  
+    }
+  }
+
+  async apiSetUserDomain(userId: number, simplexDomain?: string): Promise<T.User> {
+    const r = await this.sendChatCmd(CC.APISetUserDomain.cmdString({userId, simplexDomain}))
+    switch (r.type) {
+      case "userProfileUpdated":
+      case "userProfileNoChange":
+        return r.user
+      default:
+        throw new ChatCommandError("error setting SimpleX name", r)
+    }
   }
 
   /**
diff --git a/packages/simplex-chat-nodejs/src/bot.ts b/packages/simplex-chat-nodejs/src/bot.ts
index 7eb823963e..66d8a8da04 100644
--- a/packages/simplex-chat-nodejs/src/bot.ts
+++ b/packages/simplex-chat-nodejs/src/bot.ts
@@ -35,6 +35,7 @@ const defaultOpts: Required<BotOptions> = {
 
 export interface BotConfig {
   profile: T.Profile,
+  simplexName?: string,
   dbOpts: BotDbOpts,
   options: BotOptions,
   onMessage?: (chatItem: T.AChatItem, content: T.MsgContent, chat: api.ChatApi) => void | Promise<void>,
@@ -45,7 +46,7 @@ export interface BotConfig {
   events?: api.EventSubscribers
 }
 
-export async function run({profile, dbOpts, options = defaultOpts, onMessage, onCommands = {}, events = {}}: BotConfig): Promise<[api.ChatApi, T.User, T.UserContactLink | undefined]> {
+export async function run({profile, simplexName, dbOpts, options = defaultOpts, onMessage, onCommands = {}, events = {}}: BotConfig): Promise<[api.ChatApi, T.User, T.UserContactLink | undefined]> {
   const bot = await api.ChatApi.init(dbOpts, dbOpts.confirmMigrations || core.MigrationConfirmation.YesUp, dbOpts.queueSize)
   const opts = fullOptions(options)
   if (onMessage || Object.keys(onCommands).length > 0) subscribeChatItems(bot, onMessage, onCommands)
@@ -60,7 +61,8 @@ export async function run({profile, dbOpts, options = defaultOpts, onMessage, on
     console.log(`Bot address: ${addressLink}`)
     if (opts.useBotProfile) botProfile.contactLink = addressLink
   }
-  await updateBotUserProfile(bot, user, botProfile, opts)  
+  const namedUser = await updateBotSimplexName(bot, user, simplexName, opts)
+  await updateBotUserProfile(bot, namedUser, botProfile, opts)
   return [bot, user, address]
 }
 
@@ -180,15 +182,32 @@ async function createOrUpdateAddress(bot: api.ChatApi, user: T.User, opts: Requi
     }
   }
   
-  return address    
+  return address
+}
+
+async function updateBotSimplexName(bot: api.ChatApi, user: T.User, simplexName: string | undefined, opts: Required<BotOptions>): Promise<T.User> {
+  const name = simplexName?.toLowerCase()
+  if (user.profile.contactDomain?.domain === name) return user
+  if (!opts.updateAddress) {
+    console.log("Bot SimpleX name changed")
+    return user
+  }
+  console.log("Bot SimpleX name changed, updating...")
+  try {
+    return await bot.apiSetUserDomain(user.userId, name)
+  } catch (e) {
+    console.log("Error updating bot SimpleX name", e)
+    return user
+  }
 }
 
 async function updateBotUserProfile(bot: api.ChatApi, user: T.User, profile: T.Profile, opts: Required<BotOptions>): Promise<void> {
   const {userId} = user
-  if (!equal(util.fromLocalProfile(user.profile), profile)) {
+  const {contactDomain, ...currentProfile} = util.fromLocalProfile(user.profile)
+  if (!equal(currentProfile, profile)) {
     if (opts.updateProfile) {
       console.log("Bot profile changed, updating...")
-      const summary = await bot.apiUpdateProfile(userId, profile)
+      const summary = await bot.apiUpdateProfile(userId, {...profile, contactDomain})
       console.log(
         summary
         ? `Bot profile updated: ${summary.updateSuccesses} updated contact(s), ${summary.updateFailures} failed contact update(s).`
diff --git a/packages/simplex-chat-nodejs/src/util.ts b/packages/simplex-chat-nodejs/src/util.ts
index dffb0ce1bc..6b8915e93a 100644
--- a/packages/simplex-chat-nodejs/src/util.ts
+++ b/packages/simplex-chat-nodejs/src/util.ts
@@ -53,8 +53,8 @@ export function botAddressSettings({addressSettings}: T.UserContactLink): BotAdd
   }
 }
 
-export function fromLocalProfile({displayName, fullName, shortDescr, image, contactLink, preferences, peerType}: T.LocalProfile): T.Profile {
-  const profile = {displayName, fullName, shortDescr, image, contactLink, preferences, peerType}
+export function fromLocalProfile({displayName, fullName, shortDescr, image, contactLink, preferences, peerType, contactDomain}: T.LocalProfile): T.Profile {
+  const profile = {displayName, fullName, shortDescr, image, contactLink, preferences, peerType, contactDomain: contactDomain && {domain: contactDomain.domain}}
   for (const key in profile) {
     if (typeof (profile as any)[key] === "undefined") delete (profile as any)[key]
   }
diff --git a/packages/simplex-chat-nodejs/tests/api.unit.test.ts b/packages/simplex-chat-nodejs/tests/api.unit.test.ts
index cbff9c5abf..b6b92bf93b 100644
--- a/packages/simplex-chat-nodejs/tests/api.unit.test.ts
+++ b/packages/simplex-chat-nodejs/tests/api.unit.test.ts
@@ -30,6 +30,13 @@ describe("documented success responses", () => {
     await expect(chat.apiSetProfileAddress(1, true)).resolves.toEqual({updateSuccesses: 0, updateFailures: 0, changedContacts: []})
   })
 
+  it("apiSetUserDomain sets and removes the name", async () => {
+    const chat = await chatWithResponse({type: "userProfileNoChange", user})
+    await expect(chat.apiSetUserDomain(1, "calc.simplex")).resolves.toEqual(user)
+    await expect(chat.apiSetUserDomain(1)).resolves.toEqual(user)
+    expect(jest.mocked(core.chatSendCmd).mock.calls.map(([, cmd]) => cmd)).toEqual(["/_set domain 1 calc.simplex", "/_set domain 1"])
+  })
+
   it("apiReceiveFile reports a file cancelled by sender", async () => {
     const chat = await chatWithResponse({type: "rcvFileAcceptedSndCancelled", user, rcvFileTransfer: {}})
     await expect(chat.apiReceiveFile(3)).rejects.toThrow("file cancelled by sender")
diff --git a/packages/simplex-chat-nodejs/tests/bot.unit.test.ts b/packages/simplex-chat-nodejs/tests/bot.unit.test.ts
index ac80cb74cb..abdd59c999 100644
--- a/packages/simplex-chat-nodejs/tests/bot.unit.test.ts
+++ b/packages/simplex-chat-nodejs/tests/bot.unit.test.ts
@@ -1,6 +1,6 @@
 import {ChatEvent, T} from "@simplex-chat/types"
 import * as api from "../src/api"
-import {subscribeChatItems} from "../src/bot"
+import {run, subscribeChatItems} from "../src/bot"
 
 type Handler = (evt: ChatEvent) => Promise<void>
 
@@ -56,3 +56,68 @@ describe("subscribeChatItems", () => {
     expect(calls).toEqual([])
   })
 })
+
+describe("run", () => {
+  const address = {
+    connLinkContact: {connFullLink: "full", connShortLink: "short"},
+    addressSettings: {businessAddress: false, autoAccept: {acceptIncognito: false}},
+  } as unknown as T.UserContactLink
+
+  function fakeChat(contactDomain?: T.SimplexDomainClaim) {
+    const user = {userId: 1, profile: {displayName: "Old", fullName: "", contactDomain}} as unknown as T.User
+    const chat = {
+      on: jest.fn(),
+      apiGetActiveUser: jest.fn().mockResolvedValue(user),
+      startChat: jest.fn(),
+      apiGetUserAddress: jest.fn().mockResolvedValue(address),
+      apiSetAddressSettings: jest.fn(),
+      apiSetUserDomain: jest.fn(async (_userId: number, domain?: string) => ({...user, profile: {...user.profile, contactDomain: domain && {domain}}})),
+      apiUpdateProfile: jest.fn().mockResolvedValue({updateSuccesses: 0, updateFailures: 0}),
+    }
+    jest.spyOn(api.ChatApi, "init").mockResolvedValue(chat as unknown as api.ChatApi)
+    return chat
+  }
+
+  const runBot = (simplexName?: string, options = {}) =>
+    run({profile: {displayName: "Calculator", fullName: ""}, simplexName, dbOpts: {type: "sqlite", filePrefix: "unused"}, options})
+
+  const updatedProfile = (chat: ReturnType<typeof fakeChat>) => chat.apiUpdateProfile.mock.calls[0][1]
+
+  beforeEach(() => jest.spyOn(console, "log").mockImplementation(() => {}))
+  afterEach(() => jest.restoreAllMocks())
+
+  it("sets the configured SimpleX name", async () => {
+    const chat = fakeChat()
+    await runBot("Calc.simplex")
+    expect(chat.apiSetUserDomain).toHaveBeenCalledWith(1, "calc.simplex")
+    expect(updatedProfile(chat).contactDomain).toEqual({domain: "calc.simplex"})
+  })
+
+  it("removes the SimpleX name that is not configured", async () => {
+    const chat = fakeChat({domain: "calc.simplex"})
+    await runBot()
+    expect(chat.apiSetUserDomain).toHaveBeenCalledWith(1, undefined)
+    expect(updatedProfile(chat).contactDomain).toBeUndefined()
+  })
+
+  it("keeps the SimpleX name when updating the profile", async () => {
+    const chat = fakeChat({domain: "calc.simplex", proof: {presHeader: "header", signature: "signature"}})
+    await runBot("calc.simplex")
+    expect(chat.apiSetUserDomain).not.toHaveBeenCalled()
+    expect(updatedProfile(chat).displayName).toBe("Calculator")
+    expect(updatedProfile(chat).contactDomain).toEqual({domain: "calc.simplex"})
+  })
+
+  it("continues when the SimpleX name cannot be set", async () => {
+    const chat = fakeChat()
+    chat.apiSetUserDomain.mockRejectedValue(new Error("simplexDomainNotReady"))
+    await expect(runBot("calc.simplex")).resolves.toBeDefined()
+    expect(updatedProfile(chat).contactDomain).toBeUndefined()
+  })
+
+  it("does not change the SimpleX name without updateAddress", async () => {
+    const chat = fakeChat()
+    await runBot("calc.simplex", {updateAddress: false})
+    expect(chat.apiSetUserDomain).not.toHaveBeenCalled()
+  })
+})
diff --git a/packages/simplex-chat-python/src/simplex_chat/types/_commands.py b/packages/simplex-chat-python/src/simplex_chat/types/_commands.py
index e6155c9ce7..365eff7e10 100644
--- a/packages/simplex-chat-python/src/simplex_chat/types/_commands.py
+++ b/packages/simplex-chat-python/src/simplex_chat/types/_commands.py
@@ -59,6 +59,19 @@ def APISetProfileAddress_cmd_string(self: APISetProfileAddress) -> str:
 APISetProfileAddress_Response = CR.UserProfileUpdated | CR.UserProfileNoChange | CR.ChatCmdError
 
 
+# Set or remove SimpleX name of bot address. The name must be registered with the address short link.
+# Network usage: interactive.
+class APISetUserDomain(TypedDict):
+    userId: int  # int64
+    simplexDomain: NotRequired[str]
+
+
+def APISetUserDomain_cmd_string(self: APISetUserDomain) -> str:
+    return '/_set domain ' + str(self['userId']) + ((' ' + self.get('simplexDomain')) if self.get('simplexDomain') is not None else '')
+
+APISetUserDomain_Response = CR.UserProfileUpdated | CR.UserProfileNoChange | CR.ChatCmdError
+
+
 # Set bot address settings.
 # Network usage: interactive.
 class APISetAddressSettings(TypedDict):
diff --git a/src/Simplex/Chat/Controller.hs b/src/Simplex/Chat/Controller.hs
index 9cc80fc54b..446d4f1f9e 100644
--- a/src/Simplex/Chat/Controller.hs
+++ b/src/Simplex/Chat/Controller.hs
@@ -446,7 +446,7 @@ data ChatCommand
   | APIGetCallInvitations
   | APICallStatus ContactId WebRTCCallStatus
   | APIUpdateProfile {userId :: UserId, profile :: Profile}
-  | APISetUserDomain {userId :: UserId, simplexDomain :: Maybe SimplexDomain}
+  | APISetUserDomain {userId :: UserId, simplexDomain :: Maybe (StrJSON "SimplexDomain" SimplexDomain)}
   | APISetContactPrefs {contactId :: ContactId, preferences :: Preferences}
   | APISetContactAlias {contactId :: ContactId, localAlias :: LocalAlias}
   | APISetGroupAlias {groupId :: GroupId, localAlias :: LocalAlias}
diff --git a/src/Simplex/Chat/Library/Commands.hs b/src/Simplex/Chat/Library/Commands.hs
index d02a189b1d..15e3716112 100644
--- a/src/Simplex/Chat/Library/Commands.hs
+++ b/src/Simplex/Chat/Library/Commands.hs
@@ -1594,7 +1594,8 @@ processChatCommand cxt nm = \case
     withCurrentCall contactId $ \user ct call ->
       updateCallItemStatus user ct call receivedStatus Nothing $> Just call
   APIUpdateProfile userId profile -> withUserId userId (`updateProfile` profile)
-  APISetUserDomain userId domain_ -> withUserId userId $ \user@User {profile = p@LocalProfile {contactLink, contactDomain}} ->
+  APISetUserDomain userId strDomain_ -> withUserId userId $ \user@User {profile = p@LocalProfile {contactLink, contactDomain}} -> do
+    let domain_ = unStrJSON <$> strDomain_
     if (claimDomain <$> contactDomain) == domain_
       then pure $ CRUserProfileNoChange user
       else do
@@ -6123,7 +6124,7 @@ chatCommandP =
       "/_call status @" *> (APICallStatus <$> A.decimal <* A.space <*> strP),
       "/_call get" $> APIGetCallInvitations,
       "/_profile " *> (APIUpdateProfile <$> A.decimal <* A.space <*> jsonP),
-      "/_set domain " *> (APISetUserDomain <$> A.decimal <*> optional (A.space *> strP)),
+      "/_set domain " *> (APISetUserDomain <$> A.decimal <*> optional (A.space *> (StrJSON <$> strP))),
       "/_set alias @" *> (APISetContactAlias <$> A.decimal <*> (A.space *> textP <|> pure "")),
       "/_set alias #" *> (APISetGroupAlias <$> A.decimal <*> (A.space *> textP <|> pure "")),
       "/_set alias :" *> (APISetConnectionAlias <$> A.decimal <*> (A.space *> textP <|> pure "")),