I’ve spent the last 4 days building and shipping one React micro-app every single day using AI assistants.
No backend, no databases, just pure client-side engineering.
Here is everything I’ve built from Day 0 to Day 3, and the hard engineering truths I’ve learned 👇
Landed in Nice. In addition to Nice, this France visit includes programmes in Evian and Paris. There will be bilateral and multilateral engagements, which will be aimed at improving India’s friendships with key developmental partners.
I look forward to meeting President Macron tomorrow and to being at ‘Bharat Innovates.’
@EmmanuelMacron
@BharatInnov2026
The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.
The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance.
Access to all other Claude models is not affected.
We apologize for this disruption to our customers. We believe this is a misunderstanding and are working to restore access as soon as possible.
Read our full statement: https://t.co/bwn0sximKZ
Oh yes, I remember that Bond film where the villain decarbonized the auto industry, brought fast internet to everyone on the planet, and helped paralyzed people interact with the world again.
Day 5/5: The Finale! 🏁
Built & deployed EcoMap today: a full geospatial biodiversity tracker using React + Leaflet. 🌍🌿
5 days. 5 microapps. Pair-programming with AI is an absolute cheat code for dev speed. Experiment complete! 🚀
🔗 https://t.co/oYOLs4MZiF
#BuildInPublic
Every single tool is fully open-source and live on my portfolio hub.
Catch up on the code or try the tools here:
🔗 Code: https://t.co/B3yqcMlS2F
🔗 Live: https://t.co/MJhcjrfXfF
Day 5 drop is coming up next! Stay tuned. 🛠️
Day 4: Semantic Wisdom Explorer 🏛️🧠
An app mapping modern tech burnout to ancient philosophy.
- No LLM/Cloud: 100% browser-based lexical tokenizer for privacy.
- JSON Corpus: Data decoupled from React for clean scaling.
- Anti-Flicker: Input hashing for smooth UI transitions.
✈️ Day 3: Built a Global Tech Visa Inspector.
It maps immigration tracks (like Germany's IT route), pulls live exchange rates via API, and applies PPP conversion factors so devs can see true purchasing power before relocating.
🌐 Day 2: Built "Domain Oracle"—a serverless domain intelligence tool.
It queries public registries directly from the browser using Google’s DoH API & RDAP to bypass standard server restrictions. Zero database, instant client-side retrieval speed.
🚀 Day 0 & 1: Set up a React Monorepo with Vite. Built a Wealth & Tax Simulator with live Indian PF calculations, inflation adjustments, and 10-year growth charts.
Hard truth: AI handles math well but hallucinates architecture when token limits hit. You must prune chat history.