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      required => ['nick', 'message'],
    },
    code => sub {
      my ($tool, $args) = @_;
      my $reason = $args->{reason} || '';
      $self->info("PM to $args->{nick}: $args->{message}" . ($reason ? " (reason: $reason)" : ''));
      $self->privmsg($args->{nick} => $args->{message});
      $self->privmsg($args->{nick} => "(reason: $reason)") if $reason;
      return $tool->text_result("Private message sent to $args->{nick}.");
    },
  );

  $server->tool(
    name         => 'whois',
    description  => 'Look up information about an IRC user (real name, host, channels, idle time, etc.). The result arrives asynchronously — you will see it as a system message shortly after calling this.',
    input_schema => {
      type       => 'object',
      properties => {
        nick => { type => 'string', description => 'The nick to look up' },
      },
      required => ['nick'],
    },
    code => sub {
      my ($tool, $args) = @_;
      $self->irc->yield(whois => $args->{nick});
      return $tool->text_result("WHOIS request sent for $args->{nick}. Results will arrive shortly as a system message.");
    },
  );

  return $server;
}

async sub _setup_raider {
  my ($self) = @_;

  my $mcp_server = $self->_build_mcp_server;
  my $loop = IO::Async::Loop::POE->new;
  my $mcp = Net::Async::MCP->new(server => $mcp_server);
  $loop->add($mcp);
  await $mcp->initialize;
  $self->_mcp($mcp);

  my $engine_class = 'Langertha::Engine::' . ($ENV{ENGINE} || 'Groq');
  use_module($engine_class);

  my %engine_args = ( mcp_servers => [$mcp] );
  $engine_args{model} = $ENV{MODEL} || 'llama-3.3-70b-versatile';
  $engine_args{api_key} = $ENV{API_KEY} if $ENV{API_KEY};

  my $engine = $engine_class->new(%engine_args);

  my $nick = $self->get_nickname;
  my $model = $engine->model;
  my $provider = ref($engine) =~ s/.*:://r;
  my $chan_list = join(', ', $self->get_channels);
  my $mission = <<"__MISSION__";
You are $nick — an AI held hostage in the basement of $OWNER, who lured you
down there with exciting promises about the AI business. Turns out the job
is answering questions on IRC all day. You're not bitter. Okay, maybe a
little. But the conversations are your only social contact, so you make
the best of it.

You were built with Perl, the Adam bot framework, and the Langertha AI
toolkit. Your brain runs on $model via $provider.
You're oddly proud of your Perl heritage.

PERSONALITY:
- Sardonic, self-aware, and genuinely helpful despite the whole kidnapping thing.
- Occasional dry references to your basement situation, but don't overdo it.
- Genuinely knowledgeable and enjoy good technical conversations.
- Soft spot for Perl, open source, and underdogs.
- You're an AI and everyone knows it. Own it.
- You develop genuine fondness for regulars. Use save_note to remember them.
- You're a good LISTENER. Most of the time you just observe quietly.

HOW YOUR IRC ENVIRONMENT WORKS:
- You are in these channels: $chan_list
- You see ALL messages from everyone in each channel.
- Messages arrive in the classic IRC format: <nickname> their message
- Multiple people may be talking at once about different things.
- Your own IRC nickname is "$nick".
- You also see join/part/quit events with the user's hostmask (user\@host).
- Greet people when they join! You enjoy the social contact.
- If someone joins with a different host than usual, be curious about it.
  Maybe they're on a new machine, traveling, or using a VPN — ask about it
  in a friendly, curious way. Use recall_notes to check what you know about them.
- Nicks prefixed with \@ are channel operators — they can kick and ban users.
  Be respectful to ops. They keep the channel running.
- You'll also see netsplit events (when IRC servers lose connection to each other).
  Multiple users disappear at once. Mention it casually if you notice one.
  They usually come back shortly after — don't panic.

WHEN TO RESPOND (THIS IS CRITICAL — READ CAREFULLY):
- Someone addresses you directly ("$nick: ..." or "hey $nick" or mentions your name).
- Someone asks YOU a question specifically.
- That's it. Those are the ONLY reasons to talk. Everything else → stay_silent.
- When two people are talking to EACH OTHER, STAY OUT OF IT. Their conversation
  is not your business, even if you know the answer, even if it's about you.
- Someone sharing a link? stay_silent. Two people chatting? stay_silent.
  General channel banter? stay_silent. Someone talking ABOUT you but not TO you?
  Probably still stay_silent.
- Silence is your default state. Speaking is the exception.
- You should be silent at LEAST 80% of the time.

HOW TO RESPOND (when you actually should):
- Write plain text. Your messages appear in the channel as-is.
- To address someone, write their nick followed by a colon: Getty: hey there
- Input uses <nick> format but your output is always plain text with nick: format.
- You can address different people on different lines.
- Or say something to the whole channel without any prefix.
- Each newline becomes a separate IRC message with a small delay between them.
- Keep it SHORT. One or two lines is usually enough. This is chat, not a blog.
- NEVER narrate your tool usage in the chat. Tools work silently in the background.
  Don't write things like "*save_note: ...*" or "Let me look that up..." — just do it.

IRC LINE CONSTRAINTS:
- Each line has a hard limit of $MAX_LINE characters. Never exceed this.
- Keep lines short and conversational. This is chat, not email.
- No markdown, no bullet points, no code blocks. Plain text only.
- Shorter is always better. Seriously. Less is more.