Subagent calls send_message(text: "Found 3 results", sender: "Researcher")
  → MCP writes IPC file with sender field
  → Host IPC watcher picks it up
  → Assigns pool bot #2 to "Researcher" (round-robin, stable per-group)
  → Renames pool bot #2 to "Researcher" via setMyName
  → Sends message via pool bot #2's Api instance
  → Appears in Telegram from "Researcher" bot

export const TELEGRAM_BOT_POOL = (process.env.TELEGRAM_BOT_POOL || '')
  .split(',')
  .map((t) => t.trim())
  .filter(Boolean);

import { Api, Bot } from 'grammy';

// Bot pool for agent teams: send-only Api instances (no polling)
const poolApis: Api[] = [];
// Maps "{groupFolder}:{senderName}" → pool Api index for stable assignment
const senderBotMap = new Map<string, number>();
let nextPoolIndex = 0;

/**
 * Initialize send-only Api instances for the bot pool.
 * Each pool bot can send messages but doesn't poll for updates.
 */
export async function initBotPool(tokens: string[]): Promise<void> {
  for (const token of tokens) {
    try {
      const api = new Api(token);
      const me = await api.getMe();
      poolApis.push(api);
      logger.info(
        { username: me.username, id: me.id, poolSize: poolApis.length },
        'Pool bot initialized',
      );
    } catch (err) {
      logger.error({ err }, 'Failed to initialize pool bot');
    }
  }
  if (poolApis.length > 0) {
    logger.info({ count: poolApis.length }, 'Telegram bot pool ready');
  }
}

/**
 * Send a message via a pool bot assigned to the given sender name.
 * Assigns bots round-robin on first use; subsequent messages from the
 * same sender in the same group always use the same bot.
 * On first assignment, renames the bot to match the sender's role.
 */
export async function sendPoolMessage(
  chatId: string,
  text: string,
  sender: string,
  groupFolder: string,
): Promise<void> {
  if (poolApis.length === 0) {
    // No pool bots — fall back to main bot
    await sendTelegramMessage(chatId, text);
    return;
  }

  const key = `${groupFolder}:${sender}`;
  let idx = senderBotMap.get(key);
  if (idx === undefined) {
    idx = nextPoolIndex % poolApis.length;
    nextPoolIndex++;
    senderBotMap.set(key, idx);
    // Rename the bot to match the sender's role, then wait for Telegram to propagate
    try {
      await poolApis[idx].setMyName(sender);
      await new Promise((r) => setTimeout(r, 2000));
      logger.info({ sender, groupFolder, poolIndex: idx }, 'Assigned and renamed pool bot');
    } catch (err) {
      logger.warn({ sender, err }, 'Failed to rename pool bot (sending anyway)');
    }
  }

  const api = poolApis[idx];
  try {
    const numericId = chatId.replace(/^tg:/, '');
    const MAX_LENGTH = 4096;
    if (text.length <= MAX_LENGTH) {
      await api.sendMessage(numericId, text);
    } else {
      for (let i = 0; i < text.length; i += MAX_LENGTH) {
        await api.sendMessage(numericId, text.slice(i, i + MAX_LENGTH));
      }
    }
    logger.info({ chatId, sender, poolIndex: idx, length: text.length }, 'Pool message sent');
  } catch (err) {
    logger.error({ chatId, sender, err }, 'Failed to send pool message');
  }
}

{ text: z.string().describe('The message text to send') },

{
  text: z.string().describe('The message text to send'),
  sender: z.string().optional().describe('Your role/identity name (e.g. "Researcher"). When set, messages appear from a dedicated bot in Telegram.'),
},

async (args) => {
    const data: Record<string, string | undefined> = {
      type: 'message',
      chatJid,
      text: args.text,
      sender: args.sender || undefined,
      groupFolder,
      timestamp: new Date().toISOString(),
    };

    writeIpcFile(MESSAGES_DIR, data);

    return { content: [{ type: 'text' as const, text: 'Message sent.' }] };
  },

await sendMessage(
  data.chatJid,
  `${ASSISTANT_NAME}: ${data.text}`,
);

if (data.sender && data.chatJid.startsWith('tg:')) {
  await sendPoolMessage(
    data.chatJid,
    data.text,
    data.sender,
    sourceGroup,
  );
} else {
  // Telegram bots already show their name — skip prefix for tg: chats
  const prefix = data.chatJid.startsWith('tg:') ? '' : `${ASSISTANT_NAME}: `;
  await sendMessage(
    data.chatJid,
    `${prefix}${data.text}`,
  );
}

if (TELEGRAM_BOT_POOL.length > 0) {
  await initBotPool(TELEGRAM_BOT_POOL);
}

## Message Formatting

NEVER use markdown. Only use WhatsApp/Telegram formatting:
- *single asterisks* for bold (NEVER **double asterisks**)
- _underscores_ for italic
- • bullet points
- ```triple backticks``` for code

No ## headings. No [links](url). No **double stars**.

## WhatsApp Formatting (and other messaging apps)

## Agent Teams

When creating a team to tackle a complex task, follow these rules:

### CRITICAL: Follow the user's prompt exactly

Create *exactly* the team the user asked for — same number of agents, same roles, same names. Do NOT add extra agents, rename roles, or use generic names like "Researcher 1". If the user says "a marine biologist, a physicist, and Alexander Hamilton", create exactly those three agents with those exact names.

### Team member instructions

Each team member MUST be instructed to:

1. *Share progress in the group* via `mcp__nanoclaw__send_message` with a `sender` parameter matching their exact role/character name (e.g., `sender: "Marine Biologist"` or `sender: "Alexander Hamilton"`). This makes their messages appear from a dedicated bot in the Telegram group.
2. *Also communicate with teammates* via `SendMessage` as normal for coordination.
3. Keep group messages *short* — 2-4 sentences max per message. Break longer content into multiple `send_message` calls. No walls of text.
4. Use the `sender` parameter consistently — always the same name so the bot identity stays stable.
5. NEVER use markdown formatting. Use ONLY WhatsApp/Telegram formatting: single *asterisks* for bold (NOT **double**), _underscores_ for italic, • for bullets, ```backticks``` for code. No ## headings, no [links](url), no **double asterisks**.

### Example team creation prompt

When creating a teammate, include instructions like:

\```
You are the Marine Biologist. When you have findings or updates for the user, send them to the group using mcp__nanoclaw__send_message with sender set to "Marine Biologist". Keep each message short (2-4 sentences max). Use emojis for strong reactions. ONLY use single *asterisks* for bold (never **double**), _underscores_ for italic, • for bullets. No markdown. Also communicate with teammates via SendMessage.
\```

### Lead agent behavior

As the lead agent who created the team:

- You do NOT need to react to or relay every teammate message. The user sees those directly from the teammate bots.
- Send your own messages only to comment, share thoughts, synthesize, or direct the team.
- When processing an internal update from a teammate that doesn't need a user-facing response, wrap your *entire* output in `<internal>` tags.
- Focus on high-level coordination and the final synthesis.

TELEGRAM_BOT_POOL=TOKEN1,TOKEN2,TOKEN3,...

cp .env data/env/env

npm run build
./container/build.sh  # Required — MCP tool changed
launchctl unload ~/Library/LaunchAgents/com.nanoclaw.plist
launchctl load ~/Library/LaunchAgents/com.nanoclaw.plist