Lexicon AI - Stardance

Ship #1 Pending review

@wayne14 on Lexicon AI · about 10 hours ago

I built Lexicon AI, a free AI-powered vocabulary journal for IELTS and IELTS students. Instead of manually writing definitions, synonyms, and example sentences, users can generate them with AI by extracting words from documents and studying with flashcards and games.

The hardest part was making the AI reliable. I ran into almost every Gemini API error imaginable (429, 503, 400, 404…). To solve this, I built automatic API key rotation and model fallback, so the app tries multiple API keys and multiple Gemini models before giving up.

I’m proud that I built the entire product from scratch with very little prior experience and that nearly 30 people are already using it.

When testing, please try the AI features, like document upload, context passage, and Lexy assistant. I’d also appreciate if you try to break the app - whether that’s finding security issues, unexpected bugs, or edge cases. If you find anything, please report it using the airtable feedback form.

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@wayne14 on Lexicon AI · about 12 hours ago

5h 20m 42s logged

Hello Dev Log 1! For the past 7 months, I was working on Lexicon AI and recently added some new features, like a Referral Bonus to earn free tokens for you and your friend, a “Get a hint” button that shows you a sentence so you don’t guess a word but try to understand it from context, like in the SAT! And of course - security: RLS policies and a serverless Edge function (backend API) for more secure AI generation. Looking for early testers and feedback!