I built a World Cup 2026 AI tool in 48 hours and launched it on day 1 of the tournament

The idea hit me about a week ago. Every bar, restaurant, gym and hotel in America needs World Cup social media content right now — but nobody has time to design posts, write captions and stay consistent for 39 days straight.
So I built GoalPost AI.
You type your business name, upload one of your photos, pick a style, and it generates fully designed downloadable social media images with AI-written captions in about 60 seconds. Instagram, Facebook, Twitter all covered. The posts download as actual PNG images ready to upload directly.
Built the whole thing using Claude AI API inside a single HTML file. No backend, no server, no subscription needed. Just open in a browser and go.
Launched it on June 11 — literally day 1 of the tournament. The timing felt right.
If you run a small business or know someone who does — check it out here: (https://manjudalal.gumroad.com/l/dyosj)
Tournament runs until July 19. Would love any feedback from the dev community.