Build Your Own 24/7 AI Travel Price-Watch Agent with Grok-4 and Streamlit

Your Personal AI That Stalks Flight Prices So You Don’t Have To (And Judged Your Ex’s Vacation Photos While It Was At It)

Grok Travel Agent — a completely free, local, privacy-first Streamlit app that plans your trip, finds current flight + hotel prices, adds the trip to your calendar, shows the weather forecast, and then watches prices 24/7 and alerts you the moment they drop significantly.

Here’s what it looks like in action:

• You type: “Paris from Cincinnati, third week of February 2026, Tuesday to Sunday”

• It instantly understands → CVG → CDG, exact dates, check-in/check-out

• Shows Google Flights / Hotels / Maps deep-links

• Gives you a 7-day weather forecast

• Lets you download an .ics calendar file

• You click one big button → it starts checking prices every 15 minutes forever (even if you close the browser tab)

• The second a flight drops more than 8%, you get a toast notification

All of this running on your own machine, no third-party accounts, no data sent anywhere except to xAI’s API.

Get the App Right Now

The complete, ready-to-run code is available here:
🔗 https://github.com/rod-trent/JunkDrawer/tree/main/Travel%20Agent

Just download trip_agent.py, add your .env with your xAI API key, and you’re good to go!

Tech Stack

• Python 3.9+

• Streamlit

• OpenAI Python library (pointed at xAI’s endpoint)

• Grok-4 model (grok-4 via https://api.x.ai/v1)

• python-dotenv, icalendar, standard library only

Requirements

You only need two things:

1. An xAI API key (get one at https://x.ai/api)

2. Python environment

Install the dependencies:

pip install streamlit openai python-dotenv icalendar

How to Run It (super simple)

1. Download from GitHub
   git clone https://github.com/rod-trent/JunkDrawer.git
   cd “JunkDrawer/Travel Agent”
   
   # Or just download the single file directly from the link above

2. Create .env
   echo “XAI_API_KEY=your_xai_api_key_here” > .env

3. Run
   streamlit run trip_agent.py

Open

http://localhost:8501

and start planning!

Full Feature List

• Natural language trip planning (one-sentence input)

• Automatic airport code resolution

• One-way or round-trip support

• Multi-adult / multi-room ready

• Instant Google Flights / Hotels / Maps deep links

• 7-day weather forecast for the destination

• Downloadable .ics calendar file

• Persistent trip saving

• 24/7 background price monitoring (daemon thread)

• Real-time price lookup using Grok-4’s live web access

• Price-drop alerts (>8% drop)

• Toast notifications + auto-refresh

• Latest best flight + hotel with direct booking links

• “Start Over” button

How It Actually Works (the magic)

1. Grok-4 parses your natural language into perfect structured JSON (airport codes included!)

2. Live price checks are done by simply asking Grok-4 to “search live prices RIGHT NOW” — it has real-time web access, so no scrapers needed

   

3. A background Python thread runs forever, checking every 15 minutes and triggering Streamlit toasts on drops

Final Thoughts

This is hands-down the most useful personal travel tool I’ve built. It stays accurate forever because Grok-4 handles all the live data — zero maintenance required.

Go grab it from the GitHub link above and let your next trip basically book itself when the price is right.

Happy travels ✈️