Engineering a Multimodal Travel Planner on a 228,060-Edge Graph
A flight search engine answers a well-defined question: which available flights connect two airports? A door-to-door travel planner must answer a mo…
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I built an MCP server that lets AI agents book real hotel rooms (no OTA commission)
Booking.com takes 15-25% commission and owns the customer relationship. I run a small network of independent establishments in Luxembourg, and I wan…
Travel Planner Retrieval Design with Bounded Access Rules and Source Citations
Short answer: a travel itinerary planner needs a staged retrieval architecture with bounded access rules and source context attached to every answer…
Hotel MCPs Test
Building AI travel products, finding a hotel data source is a persistent problem. Integrate an OTA and the barrier is high with heavy commission. Bu…
Validate Google Hotel Center, Wego and trivago hotel feeds from CI
Validate Google Hotel Center, Wego and trivago hotel feeds from CI Hotel distribution feeds look simple until you need to send the same property dat…
Free Social, Travel Map, Trip Planner & Where-to-Go Guide
Find the best places to visit in any month, check the best time to visit 250 destinations, plan trips day by day, and map every country you've been…
Travel eSIM Guide for Developers and Remote Workers (2026): Stay Online in 200+ Countries
This travel eSIM guide is for developers and remote workers who need reliable mobile data abroad: setup, data needs, laptop hotspot and keeping bank…
Food festival dates as open data: a free API, an MCP server and SQL
Every year I hit the same problem planning food trips: festival listings tell you a festival exists, but not when the next one is. Pages still show…
Amadeus Self-Service shut down on July 17. Here's a drop-in replacement for flight prices
If your fare tracker, travel bot or class project suddenly can't reach test.api.amadeus.com or gets auth errors, it's not your code. Amadeus decommi…
Check a hotel's price on every booking site (and spot rate-parity gaps) without writing a scraper
Google Hotels quietly does something very useful: for any hotel and any dates, it lists the price on the hotel's own website and on Booking.com, Exp…
What Actually Happens Inside a Smart Suitcase?
I started looking into smart luggage recently, and my first thought was pretty simple: Is this actually useful, or are we just putting technology in…
Airbnb has no public API - how to get listing and price data for any city (Python)
People search "Airbnb API" thousands of times a month, but Airbnb has never had a public API for listing data. Its partner APIs are for hosts and so…
I Built a Passport Photo Maker Because a Visa Photo Took Me Two Hours
A few months ago, I was preparing for a New Year trip to Vietnam. The flight was booked. The hotel was booked. The only thing I had left until the l…
How to Integrate the Amadeus API into a B2B Travel Portal
Originally published at sunnybadgujar.com . Amadeus is where most travel portals start, and for good reason: it's the largest GDS, the content is de…
Hotel price tracking with Google Hotels data: an API in 10 minutes (Python + n8n)
Google Hotels already compares every booking site for a hotel and a stay — Booking.com, Expedia, Agoda, Hotels.com and the hotel's own site. It has…
I Built a Visa Photo Tool After Realizing How Complicated “Just a Passport Photo” Can Be
A few weeks ago, I was working on a small side project and noticed something surprisingly annoying. Visa and passport photo requirements are not as…
How I Travel for Work
Almost every time I'm working out of a coffee shop, and sometimes at the airport, someone spots the stand my laptop is sitting on and asks, "What is…
What Western Devs Need to Know Before Visiting China in 2026: Alipay, WeChat Pay & the Mobile Web
If you write software for a living and you're considering a trip to China in 2026, the friction you'll hit is not what you expect. The Great Firewal…
Launching BonVoyage: From Travel Problem to Public Launch
Three months ago BonVoyage was just an idea. Actually, it was the inevitable result of a problem I wanted to solve. I’ve always loved travel, reward…
I Built a Visa Requirement Overlay for Google Flights — Here's How the Chrome Extension Works
Every time I plan a multi-country trip, I end up in the same loop: open the foreign ministry website, navigate three layers of dropdowns, find the r…
Trump admin didn't want Ebola-exposed Americans, sent them to Berlin, Prague
Officials denied refusing entry, but dodged questions on why Americans didn't return.
Numbeo Data vs Reality: Real Cost of Living in 10 Cities
Verified data from Numbeo, Expatistan, and official sources. Updated May 2026. Everyone talks about "moving abroad to save money." But how much do y…
Building a Travel Power Adapter Tool with Claude in a Weekend
I travel a lot. And every single time, I'm standing in an airport Googling "do I need an adapter for Thailand" while my boarding group is already li…