diff --git a/uxnbot.py b/uxnbot.py
new file mode 100644
index 0000000..a919d83
--- /dev/null
+++ b/uxnbot.py
@@ -0,0 +1,81 @@
+#!/usr/bin/python
+
+import re
+import socket
+import sys
+import tempfile
+import uxnrepl
+
+server = "irc.libera.chat"
+nick = b"uxnbot"
+channel = b"#uxnbot"
+
+sandbox = tempfile.mkdtemp(prefix='uxnrepl')
+
+irc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
+def send(msg):
+    print('>>> %r' % msg)
+    irc.send(msg + b'\r\n')
+
+def recv():
+    msg = irc.recv(2040)
+    print('<<< %r' % msg)
+    return msg
+
+print("connecting to: %s" % server)
+
+irc.connect((server, 6667))
+send(b"USER %s %s %s :bot for testing uxntal code" % (nick, nick, nick))
+send(b"NICK %s" % nick)
+#send("PRIVMSG nickserv :iNOOPE\r\n")
+send(b"JOIN %s" % channel)
+
+ping_re = re.compile(br'PING (.+)$')
+chan_msg_re = re.compile(br':([^!]+)![^ ]+ PRIVMSG ([^ ]+) :' + nick + br': (.*)$')
+priv_msg_re = re.compile(br':([^!]+)![^ ]+ PRIVMSG ' + nick + br' :(.*)$')
+
+ignored = {b'rst', b'wst', b''}
+
+def evaluate(msg):
+    output = uxnrepl.execute(msg, sandbox=sandbox)
+    lines = [s.strip() for s in output.split(b'\n')]
+    interesting = [s for s in lines if s not in ignored]
+    result = b' | '.join(interesting)
+    print('*** executing %r gave %r -> %r -> %r' % (msg, output, interesting, result))
+    return result
+
+while True:
+    #text = irc.recv(2040)
+    #print(text)
+    text = recv()
+
+    m = ping_re.match(text)
+    if m:
+        send(b'PONG %s' % m.group(1))
+        continue
+
+    m = chan_msg_re.match(text)
+    if m and m.group(2) == channel:
+        user = m.group(1)
+        msg = m.group(3).strip()
+        result = evaluate(msg)
+        send(b'PRIVMSG %s :%s: %s' % (channel, user, result))
+        continue
+
+    m = priv_msg_re.match(text)
+    if m:
+        user = m.group(1)
+        msg = m.group(2).strip()
+        result = evaluate(msg)
+        send(b'PRIVMSG %s :%s' % (user, result))
+        continue
+
+# message from user in channel:
+# b':d_m!~d_m@user/d-m/x-5109880 PRIVMSG #uxn :uxnbot: hello\r\n'
+
+# keep alive:
+# b'PING :mercury.libera.chat\r\n'
+
+# private message
+# b':d_m!~d_m@user/d-m/x-5109880 PRIVMSG uxnbot :hello\r\n'
diff --git a/uxnrepl b/uxnrepl
index a6e7cf5..3eedbe1 100755
--- a/uxnrepl
+++ b/uxnrepl
@@ -14,7 +14,7 @@ template = '''
 @dump-wst
     #04 DEI #01 GTH ?&next !emit-wst &next STH !dump-wst
 
-@emit-wst 
+@emit-wst
     #05 DEI LIT [ &n $1 ] GTH ?&next #0a18 DEO !start-rst
     &next STHr emit #2018 DEO !emit-wst
 
diff --git a/uxnrepl.py b/uxnrepl.py
new file mode 100644
index 0000000..b8733b3
--- /dev/null
+++ b/uxnrepl.py
@@ -0,0 +1,76 @@
+#!/usr/bin/python
+
+from os import system
+from subprocess import run
+from sys import stdin, stdout
+from tempfile import mkstemp
+
+sandbox = None
+
+template = '''
+|0100
+    ( start ) %s ( end )
+
+    #05 DEI ,emit-wst/n STR
+    ;wst print
+
+@dump-wst
+    #04 DEI #01 GTH ?&next !emit-wst &next STH !dump-wst
+
+@emit-wst
+    #05 DEI LIT [ &n $1 ] GTH ?&next #0a18 DEO !start-rst
+    &next STHr emit #2018 DEO !emit-wst
+
+@start-rst
+    ;rst print
+
+@dump-rst
+    #05 DEI #00 GTH ?&next !emit-rst &next STHr !dump-rst
+
+@emit-rst
+    #04 DEI #01 GTH ?&next #0a18 DEO #800f DEO BRK
+    &next emit #2018 DEO !emit-rst
+
+@print ( addr* -> )
+    LDAk DUP ?{ POP POP2 JMP2r } #18 DEO INC2 !print
+
+@emit
+    DUP #04 SFT ,&ch JSR
+    &ch #0f AND DUP #09 GTH #27 MUL ADD #30 ADD #18 DEO JMP2r
+
+@rst "rst 20 00
+@wst "wst 20 00
+'''
+
+def write_rom(path, s):
+    f = open(path, 'w')
+    prog = template % s.decode('utf-8')
+    f.write(prog)
+    f.close()
+
+def execute(s, sandbox=None):
+    _, tmp_tal = mkstemp(suffix='.tal', prefix='uxnrepl')
+    _, tmp_rom = mkstemp(suffix='.rom', prefix='uxnrepl')
+    write_rom(tmp_tal, s)
+    res = run(['uxnasm', tmp_tal, tmp_rom], cwd=sandbox, capture_output=True)
+    ##print('*** uxnasm.res is %r' % res)
+    if res.returncode != 0:
+        return res.stderr
+    res = run(['uxncli', tmp_rom], cwd=sandbox, capture_output=True)
+    ##print('*** uxncli.res is %r' % res)
+    return res.stdout
+
+def main():
+    print('uxnrepl (ctrl-d to exit)')
+    while True:
+        stdout.write('> ')
+        stdout.flush()
+        s = stdin.readline()
+        if not s:
+            print('bye!')
+            break
+        stdout.write(execute(s).decode('utf-8'))
+        stdout.flush()
+
+if __name__ == "__main__":
+    main()