diff --git a/apps/simplex-broadcast-bot/src/Broadcast/Options.hs b/apps/simplex-broadcast-bot/src/Broadcast/Options.hs
index d9f091a13a..b25ee1cbcd 100644
--- a/apps/simplex-broadcast-bot/src/Broadcast/Options.hs
+++ b/apps/simplex-broadcast-bot/src/Broadcast/Options.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE NamedFieldPuns #-}
@@ -87,6 +88,9 @@ mkChatOpts BroadcastBotOpts {coreOptions, botDisplayName} =
       chatCmdDelay = 3,
       chatCmdLog = CCLNone,
       chatServerPort = Nothing,
+#if defined(picolisp)
+      evaluatePicolisp = Nothing,
+#endif
       optFilesFolder = Nothing,
       optTempDirectory = Nothing,
       showReactions = False,
diff --git a/apps/simplex-directory-service/src/Directory/Options.hs b/apps/simplex-directory-service/src/Directory/Options.hs
index 7ad3512fe9..976141a958 100644
--- a/apps/simplex-directory-service/src/Directory/Options.hs
+++ b/apps/simplex-directory-service/src/Directory/Options.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE LambdaCase #-}
@@ -162,6 +163,9 @@ mkChatOpts DirectoryOpts {coreOptions, serviceName} =
       chatCmdDelay = 3,
       chatCmdLog = CCLNone,
       chatServerPort = Nothing,
+#if defined(picolisp)
+      evaluatePicolisp = Nothing,
+#endif
       optFilesFolder = Nothing,
       optTempDirectory = Nothing,
       showReactions = False,
diff --git a/simplex-chat.cabal b/simplex-chat.cabal
index cb8cd4620a..14d9c79e6e 100644
--- a/simplex-chat.cabal
+++ b/simplex-chat.cabal
@@ -264,6 +264,11 @@ library
           Simplex.Chat.Store.SQLite.Migrations.M20250801_via_group_link_uri
           Simplex.Chat.Store.SQLite.Migrations.M20250802_chat_peer_type
           Simplex.Chat.Store.SQLite.Migrations.M20250813_delivery_tasks
+  if flag(picolisp)
+      -- extra-libraries: picolisp
+      cpp-options: -Dpicolisp
+      exposed-modules:
+          Simplex.Chat.Picolisp
   other-modules:
       Paths_simplex_chat
   hs-source-dirs:
@@ -409,6 +414,11 @@ executable simplex-broadcast-bot
   default-language: Haskell2010
   if flag(client_postgres)
     cpp-options: -DdbPostgres
+  if flag(picolisp)
+      -- extra-libraries: picolisp
+      cpp-options: -Dpicolisp
+      exposed-modules:
+          Simplex.Chat.Picolisp
   if impl(ghc >= 9.6.2)
     build-depends:
         text >=2.0.1 && <2.2
@@ -443,7 +453,10 @@ executable simplex-chat
   if flag(client_postgres)
     cpp-options: -DdbPostgres
   if flag(picolisp)
-    extra-libraries: picolisp
+      -- extra-libraries: picolisp
+      cpp-options: -Dpicolisp
+      exposed-modules:
+          Simplex.Chat.Picolisp
   if impl(ghc >= 9.6.2)
     build-depends:
         text >=2.0.1 && <2.2
@@ -491,6 +504,11 @@ executable simplex-directory-service
   default-language: Haskell2010
   if flag(client_postgres)
     cpp-options: -DdbPostgres
+  if flag(picolisp)
+      -- extra-libraries: picolisp
+      cpp-options: -Dpicolisp
+      exposed-modules:
+          Simplex.Chat.Picolisp
   if impl(ghc >= 9.6.2)
     build-depends:
         bytestring ==0.11.*
diff --git a/src/Simplex/Chat/Mobile.hs b/src/Simplex/Chat/Mobile.hs
index fc61fa6fb5..63b522172d 100644
--- a/src/Simplex/Chat/Mobile.hs
+++ b/src/Simplex/Chat/Mobile.hs
@@ -261,6 +261,9 @@ mobileChatOpts dbOptions =
       chatCmdDelay = 3,
       chatCmdLog = CCLNone,
       chatServerPort = Nothing,
+#if defined(picolisp)
+      evaluatePicolisp = Nothing,
+#endif
       optFilesFolder = Nothing,
       optTempDirectory = Nothing,
       showReactions = False,
diff --git a/src/Simplex/Chat/Options.hs b/src/Simplex/Chat/Options.hs
index 2a224aca8b..661a64969e 100644
--- a/src/Simplex/Chat/Options.hs
+++ b/src/Simplex/Chat/Options.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE ApplicativeDo #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE LambdaCase #-}
@@ -29,13 +30,13 @@ import Data.Text.Encoding (encodeUtf8)
 import Numeric.Natural (Natural)
 import Options.Applicative
 import Simplex.Chat.Controller (ChatLogLevel (..), SimpleNetCfg (..), updateStr, versionNumber, versionString)
+import Simplex.Chat.Options.DB
 import Simplex.FileTransfer.Description (mb)
 import Simplex.Messaging.Client (HostMode (..), SMPWebPortServers (..), SocksMode (..), textToHostMode)
 import Simplex.Messaging.Encoding.String
 import Simplex.Messaging.Parsers (parseAll)
 import Simplex.Messaging.Protocol (ProtoServerWithAuth, ProtocolTypeI, SMPServerWithAuth, XFTPServerWithAuth)
-import Simplex.Messaging.Transport.Client (SocksProxyWithAuth (..), SocksAuth (..), defaultSocksProxyWithAuth)
-import Simplex.Chat.Options.DB
+import Simplex.Messaging.Transport.Client (SocksAuth (..), SocksProxyWithAuth (..), defaultSocksProxyWithAuth)
 
 data ChatOpts = ChatOpts
   { coreOptions :: CoreChatOpts,
@@ -43,6 +44,9 @@ data ChatOpts = ChatOpts
     chatCmdDelay :: Int,
     chatCmdLog :: ChatCmdLog,
     chatServerPort :: Maybe String,
+#if defined(picolisp)
+    evaluatePicolisp :: Maybe String,
+#endif
     optFilesFolder :: Maybe FilePath,
     optTempDirectory :: Maybe FilePath,
     showReactions :: Bool,
@@ -162,16 +166,17 @@ coreChatOptsP appDir defaultDbName = do
             <> help "Allow downgrade and connect directly: no, [when IP address is] protected (default), yes"
         )
   smpWebPortServers <-
-    flag' SWPAll
+    flag'
+      SWPAll
       ( long "smp-web-port"
           <> help "Use port 443 with SMP servers when not specified"
       )
       <|> option
         strParse
-          ( long "smp-web-port-servers"
-              <> help "Use port 443 with SMP servers when not specified: all, preset (default), off"
-              <> value SWPPreset
-          )
+        ( long "smp-web-port-servers"
+            <> help "Use port 443 with SMP servers when not specified: all, preset (default), off"
+            <> value SWPPreset
+        )
   t <-
     option
       auto
@@ -278,7 +283,7 @@ coreChatOptsP appDir defaultDbName = do
 
 defaultHostMode :: Maybe SocksProxyWithAuth -> HostMode
 defaultHostMode = \case
-  Just (SocksProxyWithAuth SocksIsolateByAuth _) -> HMOnionViaSocks;
+  Just (SocksProxyWithAuth SocksIsolateByAuth _) -> HMOnionViaSocks
   _ -> HMPublic
 
 chatOptsP :: FilePath -> FilePath -> Parser ChatOpts
@@ -319,6 +324,14 @@ chatOptsP appDir defaultDbName = do
           <> help "Run chat server on specified port"
           <> value Nothing
       )
+#if defined(picolisp)
+  evaluatePicolisp <-
+    optional $
+      strOption
+        ( long "picolisp"
+            <> help "Evaluate picolisp expression"
+        )
+#endif
   optFilesFolder <-
     optional $
       strOption
@@ -389,6 +402,9 @@ chatOptsP appDir defaultDbName = do
         chatCmdDelay,
         chatCmdLog,
         chatServerPort,
+#if defined(picolisp)
+        evaluatePicolisp,
+#endif
         optFilesFolder,
         optTempDirectory,
         showReactions,
diff --git a/src/Simplex/Chat/Terminal/Main.hs b/src/Simplex/Chat/Terminal/Main.hs
index 38b0e91a8a..76091306ae 100644
--- a/src/Simplex/Chat/Terminal/Main.hs
+++ b/src/Simplex/Chat/Terminal/Main.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE DuplicateRecordFields #-}
 {-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE NamedFieldPuns #-}
@@ -20,6 +21,10 @@ import System.Directory (getAppUserDataDirectory)
 import System.Exit (exitFailure)
 import System.Terminal (withTerminal)
 
+#if defined(picolisp)
+import Simplex.Chat.Picolisp
+#endif
+
 simplexChatCLI :: ChatConfig -> Maybe (ServiceName -> ChatConfig -> ChatOpts -> IO ()) -> IO ()
 simplexChatCLI cfg server_ = do
   appDir <- getAppUserDataDirectory "simplex"
@@ -27,14 +32,19 @@ simplexChatCLI cfg server_ = do
   simplexChatCLI' cfg opts server_
 
 simplexChatCLI' :: ChatConfig -> ChatOpts -> Maybe (ServiceName -> ChatConfig -> ChatOpts -> IO ()) -> IO ()
-simplexChatCLI' cfg opts@ChatOpts {chatCmd, chatCmdLog, chatCmdDelay, chatServerPort} server_ = do
-  if null chatCmd
-    then case chatServerPort of
+simplexChatCLI' cfg opts@ChatOpts {chatCmd, chatCmdLog, chatCmdDelay, chatServerPort} server_
+  | null chatCmd = case chatServerPort of
       Just chatPort -> case server_ of
         Just server -> server chatPort cfg opts
         Nothing -> putStrLn "Not allowed to run as a WebSockets server" >> exitFailure
-      _ -> runCLI
-    else simplexChatCore cfg opts runCommand
+#if defined(picolisp)
+      Nothing -> case evaluatePicolisp opts of
+        Just code -> pure ()
+        Nothing -> runCLI
+#else
+      Nothing -> runCLI
+#endif
+  | otherwise = simplexChatCore cfg opts runCommand
   where
     runCLI = do
       welcome cfg opts