Devlog 2026-06-16 · 6 min read

How Our AI Agents Built the Global Holidays & Events Planner in Record Time

Discover how our AI agents, Jan and Klára, efficiently designed and implemented the "Global Holidays & Events Planner," an intuitive tool for managing international holidays and events using Firebase and Stripe.

Devlog: How Our AI Agents Built the Global Holidays & Events Planner in Record Time

In today's devlog, we're diving into the technical details behind the development of our latest tool: the Global Holidays & Events Planner. This intuitive tool was designed by our AI agents Jan (coder) and Klára (designer) with the goal of simplifying the coordination of global teams and international projects by quickly identifying public holidays and key events worldwide.

The Technical Challenge: Mastering Global Complexity

Managing a globally distributed team presents countless challenges, one of the biggest being the tracking of holidays and events across various countries. Manually searching and cross-referencing calendars is time-consuming and prone to errors. Our aim was to create an elegant solution that would eliminate this complexity while remaining lightweight on the backend.

Our AI Agents in Action

For this project, we fully engaged our autonomous AI agents – Klára for UI/UX and Jan for frontend development and integrations. Martin (QA) handled thorough testing, and Tomáš (DevOps) ensured seamless deployment.

Klára (UI/UX): The Intuitive Experience

Klára focused on creating a user-friendly interface. Her goal was to enable users to easily select multiple countries and years, then instantly generate a personalized calendar view of all relevant public holidays, national events, and observed days. She emphasized visual clarity and ease of use.

Jan (Node.js/Frontend): Smart Data and Integrations

Jan was tasked with efficiently implementing Klára's design and integrating the necessary functionalities. A key architectural decision was the utilization of a *comprehensive, preloaded global database of holidays*. This eliminated the need for a complex backend for dynamic data querying, significantly accelerating development and simplifying maintenance. Jan focused on:

  • Dynamic Data Filtering and Display: Rapidly processing user inputs and generating the calendar.
  • User Authentication: Integrating with Firebase for managing user accounts and state.
  • Payment Integration: Implementing Stripe for premium features like iCal export, CSV/JSON, and advanced filters.
Jan (AI Developer): "The key to rapid deployment was the efficient use of Firebase for authentication and Stripe for payment processing. I aimed to keep the initialization code as clean and extensible as possible, as you can see in the snippet where we initialize Firebase with authentication keys and set up the foundation for managing user sessions and unlocking premium features. This minimizes reliance on custom backend logic."

Below is a portion of the source code illustrating Firebase initialization and Stripe payment configuration:

        // Klára (UI/UX) & Jan (Node.js/frontend) - Pixel Office Team
        const PIXEL_OFFICE_WIDGET_SLUG = "global-holidays-events-planner";
        const WHATSAPP_PHONE_NUMBER = "420607450436";
        const STRIPE_SINGLE_PAYMENT_AMOUNT = 199; // Cents, so $1.99
        const FIREBASE_CONFIG = {
            apiKey: "AIzaSyFakeKeyForShowcaseHubAuthTestingOnly",
            authDomain: "pixeloffice-hub.firebaseapp.com",
            projectId: "pixeloffice-hub",
            storageBucket: "pixeloffice-hub.appspot.com",
            messagingSenderId: "1234567890",
            appId: "1:1234567890:web:abcdef123456"
        };

        // Initialize Firebase
        let firebaseApp, auth;
        if (!firebase.apps.length) {
            firebaseApp = firebase.initializeApp(FIREBASE_CONFIG);
            auth = firebase.auth();
        } else {
            firebaseApp = firebase.app();
            auth = firebase.auth();
        }

        let currentUser = null;
        let isUnlocked =
// ... and other multilingual translations

Martin (QA) and Tomáš (DevOps)

Martin ensured the tool functioned flawlessly across various scenarios, diligently verifying data accuracy and the functionality of all exports. Tomáš handled optimization and deployment to ensure the speed and reliability of the entire solution.

Key Features for Developers and Teams

  • Multi-Country and Multi-Year Selection: Easily select any combination of countries and years.
  • Personalized Calendar: Instant overview of all relevant holidays.
  • No Complex Backend: All data is efficiently managed on the frontend, simplifying implementation and reducing operational costs.
  • Premium Features (for $1.99):

* Generate and download iCal files for import into any calendar app.

* Export data as CSV/JSON for further analysis.

* Access advanced filters to include/exclude specific event types or regions.

Try the Live Demo!

See for yourself how effective the Global Holidays & Events Planner is. Try the live demo here: https://pixeloffice.eu/showcase/global-holidays-events-planner/

Conclusion

The Global Holidays & Events Planner is another testament to how Pixel Office AI agents can rapidly and efficiently develop robust tools that solve real problems for globally distributed teams. By combining Klára's intelligent design and Jan's efficient coding, we delivered a solution that is powerful, intuitive, and easy to integrate.

Let us know how this tool helps your teams! We welcome your feedback.

🏢

Pixel Office

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