diff --git a/services/fugle-market-data/poetry.lock b/services/fugle-market-data/poetry.lock
new file mode 100644
index 0000000..c3fa09e
--- /dev/null
+++ b/services/fugle-market-data/poetry.lock
@@ -0,0 +1,436 @@
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+[[package]]
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+[[package]]
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+version = "1.3.0"
+description = "Sniff out which async library your code is running under"
+optional = false
+python-versions = ">=3.7"
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+description = "The little ASGI library that shines."
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+[package.extras]
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+
+[[package]]
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+version = "4.9.0"
+description = "Backported and Experimental Type Hints for Python 3.8+"
+optional = false
+python-versions = ">=3.8"
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+optional = false
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+]
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+[package.extras]
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+socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
+zstd = ["zstandard (>=0.18.0)"]
+
+[[package]]
+name = "websocket-client"
+version = "1.7.0"
+description = "WebSocket client for Python with low level API options"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "websocket-client-1.7.0.tar.gz", hash = "sha256:10e511ea3a8c744631d3bd77e61eb17ed09304c413ad42cf6ddfa4c7787e8fe6"},
+    {file = "websocket_client-1.7.0-py3-none-any.whl", hash = "sha256:f4c3d22fec12a2461427a29957ff07d35098ee2d976d3ba244e688b8b4057588"},
+]
+
+[package.extras]
+docs = ["Sphinx (>=6.0)", "sphinx-rtd-theme (>=1.1.0)"]
+optional = ["python-socks", "wsaccel"]
+test = ["websockets"]
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.11"
+content-hash = "3605b324976df9b62d6ee56dc82326401e108b9f44d3c05a2f877a89d8fe6b6a"
diff --git a/services/fugle-market-data/pyproject.toml b/services/fugle-market-data/pyproject.toml
new file mode 100644
index 0000000..d1550c1
--- /dev/null
+++ b/services/fugle-market-data/pyproject.toml
@@ -0,0 +1,14 @@
+[tool.poetry]
+name = "fugle-market-data"
+version = "0.1.0"
+description = "Fetch market data from Fugle API"
+authors = ["wildfootw <wildfootw@wildfoo.tw>", "soyccan <soyccan@gmail.com>"]
+
+[tool.poetry.dependencies]
+python = "^3.11"
+fugle-marketdata = "^1.0.2"
+fastapi = "^0.104.1"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
diff --git a/services/fugle-market-data/src/main.py b/services/fugle-market-data/src/main.py
index 489e1c9..7c2ed8a 100644
--- a/services/fugle-market-data/src/main.py
+++ b/services/fugle-market-data/src/main.py
@@ -13,21 +13,40 @@
 # Copyright (c) 2023 by wildfootw <wildfootw@wildfoo.tw>
 #
 
+import logging
 import os
 
 from fastapi import FastAPI
 from fugle_marketdata import RestClient
 
-fugle_marketdata_api_key = os.getenv('FUGLE_MARKET_DATA_API_KEY')
+
+def get_env_or_raise(name: str) -> str:
+    value = os.getenv(name)
+    if value is None:
+        raise ValueError(f'Environment variable "{name}" not set')
+    return value
+
+fugle_marketdata_api_key = get_env_or_raise('FUGLE_MARKET_DATA_API_KEY')
 
 app = FastAPI()
 
+logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO)
+
 def get_stock_price(symbol: str):
     client = RestClient(api_key=fugle_marketdata_api_key)
     data = client.stock.intraday.quote(symbol=symbol)
+
+    if not isinstance(data, dict):
+        logging.error(f"Unexpected response: {data}")
+        return {'error': repr(data)}
+
+    if (status_code := data.get("statusCode")) and status_code != 200:
+        logging.error(f"Failed to get stock price: {data.get('message')}")
+        return {'error': data.get('message')}
+
     # Extracting specific data from the response
     price_data = {
-        "symbol": symbol,
+        "symbol":        symbol,
         "name":          data['name'],
         "lastPrice":     data['lastPrice'],
         "openPrice":     data['openPrice'],
diff --git a/services/telegram-bot/poetry.lock b/services/telegram-bot/poetry.lock
new file mode 100644
index 0000000..908290e
--- /dev/null
+++ b/services/telegram-bot/poetry.lock
@@ -0,0 +1,276 @@
+# This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand.
+
+[[package]]
+name = "anyio"
+version = "4.2.0"
+description = "High level compatibility layer for multiple asynchronous event loop implementations"
+optional = false
+python-versions = ">=3.8"
+files = [
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+    {file = "anyio-4.2.0.tar.gz", hash = "sha256:e1875bb4b4e2de1669f4bc7869b6d3f54231cdced71605e6e64c9be77e3be50f"},
+]
+
+[package.dependencies]
+idna = ">=2.8"
+sniffio = ">=1.1"
+
+[package.extras]
+doc = ["Sphinx (>=7)", "packaging", "sphinx-autodoc-typehints (>=1.2.0)", "sphinx-rtd-theme"]
+test = ["anyio[trio]", "coverage[toml] (>=7)", "exceptiongroup (>=1.2.0)", "hypothesis (>=4.0)", "psutil (>=5.9)", "pytest (>=7.0)", "pytest-mock (>=3.6.1)", "trustme", "uvloop (>=0.17)"]
+trio = ["trio (>=0.23)"]
+
+[[package]]
+name = "certifi"
+version = "2023.11.17"
+description = "Python package for providing Mozilla's CA Bundle."
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "certifi-2023.11.17-py3-none-any.whl", hash = "sha256:e036ab49d5b79556f99cfc2d9320b34cfbe5be05c5871b51de9329f0603b0474"},
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+
+[[package]]
+name = "charset-normalizer"
+version = "3.3.2"
+description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
+optional = false
+python-versions = ">=3.7.0"
+files = [
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+    {file = "httpcore-1.0.2.tar.gz", hash = "sha256:9fc092e4799b26174648e54b74ed5f683132a464e95643b226e00c2ed2fa6535"},
+]
+
+[package.dependencies]
+certifi = "*"
+h11 = ">=0.13,<0.15"
+
+[package.extras]
+asyncio = ["anyio (>=4.0,<5.0)"]
+http2 = ["h2 (>=3,<5)"]
+socks = ["socksio (==1.*)"]
+trio = ["trio (>=0.22.0,<0.23.0)"]
+
+[[package]]
+name = "httpx"
+version = "0.25.2"
+description = "The next generation HTTP client."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "httpx-0.25.2-py3-none-any.whl", hash = "sha256:a05d3d052d9b2dfce0e3896636467f8a5342fb2b902c819428e1ac65413ca118"},
+    {file = "httpx-0.25.2.tar.gz", hash = "sha256:8b8fcaa0c8ea7b05edd69a094e63a2094c4efcb48129fb757361bc423c0ad9e8"},
+]
+
+[package.dependencies]
+anyio = "*"
+certifi = "*"
+httpcore = "==1.*"
+idna = "*"
+sniffio = "*"
+
+[package.extras]
+brotli = ["brotli", "brotlicffi"]
+cli = ["click (==8.*)", "pygments (==2.*)", "rich (>=10,<14)"]
+http2 = ["h2 (>=3,<5)"]
+socks = ["socksio (==1.*)"]
+
+[[package]]
+name = "idna"
+version = "3.6"
+description = "Internationalized Domain Names in Applications (IDNA)"
+optional = false
+python-versions = ">=3.5"
+files = [
+    {file = "idna-3.6-py3-none-any.whl", hash = "sha256:c05567e9c24a6b9faaa835c4821bad0590fbb9d5779e7caa6e1cc4978e7eb24f"},
+    {file = "idna-3.6.tar.gz", hash = "sha256:9ecdbbd083b06798ae1e86adcbfe8ab1479cf864e4ee30fe4e46a003d12491ca"},
+]
+
+[[package]]
+name = "python-telegram-bot"
+version = "20.7"
+description = "We have made you a wrapper you can't refuse"
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "python-telegram-bot-20.7.tar.gz", hash = "sha256:4f146c39de5f5e0b3723c2abedaf78046ebd30a6a49d2281ee4b3af5eb116b68"},
+    {file = "python_telegram_bot-20.7-py3-none-any.whl", hash = "sha256:462326c65671c8c39e76c8c96756ee918be6797d225f8db84d2ec0f883383b8c"},
+]
+
+[package.dependencies]
+httpx = ">=0.25.2,<0.26.0"
+
+[package.extras]
+all = ["APScheduler (>=3.10.4,<3.11.0)", "aiolimiter (>=1.1.0,<1.2.0)", "cachetools (>=5.3.2,<5.4.0)", "cryptography (>=39.0.1)", "httpx[http2]", "httpx[socks]", "pytz (>=2018.6)", "tornado (>=6.3.3,<6.4.0)"]
+callback-data = ["cachetools (>=5.3.2,<5.4.0)"]
+ext = ["APScheduler (>=3.10.4,<3.11.0)", "aiolimiter (>=1.1.0,<1.2.0)", "cachetools (>=5.3.2,<5.4.0)", "pytz (>=2018.6)", "tornado (>=6.3.3,<6.4.0)"]
+http2 = ["httpx[http2]"]
+job-queue = ["APScheduler (>=3.10.4,<3.11.0)", "pytz (>=2018.6)"]
+passport = ["cryptography (>=39.0.1)"]
+rate-limiter = ["aiolimiter (>=1.1.0,<1.2.0)"]
+socks = ["httpx[socks]"]
+webhooks = ["tornado (>=6.3.3,<6.4.0)"]
+
+[[package]]
+name = "requests"
+version = "2.31.0"
+description = "Python HTTP for Humans."
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "requests-2.31.0-py3-none-any.whl", hash = "sha256:58cd2187c01e70e6e26505bca751777aa9f2ee0b7f4300988b709f44e013003f"},
+    {file = "requests-2.31.0.tar.gz", hash = "sha256:942c5a758f98d790eaed1a29cb6eefc7ffb0d1cf7af05c3d2791656dbd6ad1e1"},
+]
+
+[package.dependencies]
+certifi = ">=2017.4.17"
+charset-normalizer = ">=2,<4"
+idna = ">=2.5,<4"
+urllib3 = ">=1.21.1,<3"
+
+[package.extras]
+socks = ["PySocks (>=1.5.6,!=1.5.7)"]
+use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
+
+[[package]]
+name = "sniffio"
+version = "1.3.0"
+description = "Sniff out which async library your code is running under"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "sniffio-1.3.0-py3-none-any.whl", hash = "sha256:eecefdce1e5bbfb7ad2eeaabf7c1eeb404d7757c379bd1f7e5cce9d8bf425384"},
+    {file = "sniffio-1.3.0.tar.gz", hash = "sha256:e60305c5e5d314f5389259b7f22aaa33d8f7dee49763119234af3755c55b9101"},
+]
+
+[[package]]
+name = "urllib3"
+version = "2.1.0"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "urllib3-2.1.0-py3-none-any.whl", hash = "sha256:55901e917a5896a349ff771be919f8bd99aff50b79fe58fec595eb37bbc56bb3"},
+    {file = "urllib3-2.1.0.tar.gz", hash = "sha256:df7aa8afb0148fa78488e7899b2c59b5f4ffcfa82e6c54ccb9dd37c1d7b52d54"},
+]
+
+[package.extras]
+brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)"]
+socks = ["pysocks (>=1.5.6,!=1.5.7,<2.0)"]
+zstd = ["zstandard (>=0.18.0)"]
+
+[metadata]
+lock-version = "2.0"
+python-versions = "^3.11"
+content-hash = "31ebafc194f827c3eb3c5af93c138c1a52414debd71591f204fb2e291974695a"
diff --git a/services/telegram-bot/pyproject.toml b/services/telegram-bot/pyproject.toml
new file mode 100644
index 0000000..15ebd2a
--- /dev/null
+++ b/services/telegram-bot/pyproject.toml
@@ -0,0 +1,14 @@
+[tool.poetry]
+name = "telegram-bot"
+version = "0.1.0"
+description = "The front-end of TradeWiSE as a Telegram bot."
+authors = ["wildfootw <wildfootw@wildfoo.tw>", "soyccan <soyccan@gmail.com>"]
+
+[tool.poetry.dependencies]
+python = "^3.11"
+python-telegram-bot = "^20.7"
+requests = "^2.31.0"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
diff --git a/services/telegram-bot/src/main.py b/services/telegram-bot/src/main.py
index 5dc3096..89fc944 100644
--- a/services/telegram-bot/src/main.py
+++ b/services/telegram-bot/src/main.py
@@ -12,20 +12,82 @@
 #
 # Copyright (c) 2023 by wildfootw <wildfootw@wildfoo.tw>
 #
+from __future__ import annotations
 
+import json
 import logging
 import os
+from typing import TYPE_CHECKING, cast
 
 import requests
-from telegram import Update
+from telegram import Bot, BotCommand, Update
 from telegram.ext import ApplicationBuilder, CommandHandler, ContextTypes
 
-telegram_bot_token = os.getenv('TELEGRAM_BOT_TOKEN')
-telegram_bot_auth_user_id = os.getenv('TELEGRAM_BOT_AUTH_USER_ID')
+if TYPE_CHECKING:
+    from telegram.ext import Application
+
+
+def get_env_or_raise(name: str) -> str:
+    value = os.getenv(name)
+    if value is None:
+        raise ValueError(f'Environment variable "{name}" not set')
+    return value
+
+telegram_bot_token = get_env_or_raise('TELEGRAM_BOT_TOKEN')
+telegram_bot_auth_user_id = get_env_or_raise('TELEGRAM_BOT_AUTH_USER_ID')
 
 # Configure logging
 logging.basicConfig(format='%(asctime)s - %(name)s - %(levelname)s - %(message)s', level=logging.INFO)
 
+
+class _BaseCommand:
+    command: str
+    description: str
+
+    def to_bot_command(self) -> BotCommand:
+        return BotCommand(self.command, self.description)
+
+    @staticmethod
+    async def handle(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
+        ...
+
+class StartCommand(_BaseCommand):
+    command = "start"
+    description = "Starts the bot"
+
+    @staticmethod
+    async def handle(update: Update, context: ContextTypes.DEFAULT_TYPE):
+        if not await is_user_authorized(update, context):
+            return
+        await update.message.reply_text("Welcome to TradeWiSE! Your trading assistant.")
+
+class StockCommand(_BaseCommand):
+    command = "stock"
+    description = "Get stock price"
+
+    @staticmethod
+    async def handle(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
+        if not await is_user_authorized(update, context):
+            return
+        args = context.args
+        if not args:
+            await update.message.reply_text("Please provide a stock symbol. Usage: /stock <symbol>")
+            return
+        symbol = args[0]
+        data = StockCommand.get_stock_price(symbol)
+        await update.message.reply_text(data)
+
+    @staticmethod
+    def get_stock_price(symbol: str) -> str:
+        response = requests.get(f'http://fugle-market-data:80/price/{symbol}')
+        if response.status_code == 200:
+            return response.text
+        else:
+            return json.dumps({'error': f'Unable to fetch data: {response.text}'})
+
+_commands: list[_BaseCommand] = [StartCommand(), StockCommand()]
+
+
 async def is_user_authorized(update: Update, context: ContextTypes.DEFAULT_TYPE):
     user_id = update.effective_user.id
     if user_id != int(telegram_bot_auth_user_id):
@@ -33,38 +95,21 @@ async def is_user_authorized(update: Update, context: ContextTypes.DEFAULT_TYPE)
         return False
     return True
 
-async def get_stock_price(symbol: str):
-    response = requests.get(f'http://fugle-market-data:80/price/{symbol}')
-    if response.status_code == 200:
-        return response.json()
-    else:
-        return {'error': 'Unable to fetch data'}
-
-# Define command handlers
-async def start(update: Update, context: ContextTypes.DEFAULT_TYPE):
-    if not await is_user_authorized(update, context):
-        return
-    await update.message.reply_text("Welcome to TradeWiSE! Your trading assistant.")
-
-async def stock(update: Update, context: ContextTypes.DEFAULT_TYPE):
-    if not await is_user_authorized(update, context):
-        return
-    args = context.args
-    if not args:
-        await update.message.reply_text("Please provide a stock symbol. Usage: /stock <symbol>")
-        return
-    symbol = args[0]
-    data = await get_stock_price(symbol)
-    await update.message.reply_text(str(data))
-
-# Main function to setup the bot
-#async def main():
-if __name__ == '__main__':
-    application = ApplicationBuilder().token(telegram_bot_token).build()
+async def post_init(application: Application) -> None:
+    # Set bot commands so that they are shown in the bot menu
+    await cast(Bot, application.bot).set_my_commands(
+        [cmd.to_bot_command() for cmd in _commands]
+    )
+
+def main():
+    application = ApplicationBuilder().token(telegram_bot_token).post_init(post_init).build()
 
     # Register handlers
-    application.add_handler(CommandHandler('start', start))
-    application.add_handler(CommandHandler('stock', stock))
+    for cmd in _commands:
+        application.add_handler(CommandHandler(cmd.command, cmd.handle))
 
     # Start the bot
     application.run_polling()
+
+if __name__ == '__main__':
+    main()