TokenLens

by jldavis94 1.0.0 👁 9 views

TokenLens analyzes any AI prompt and shows you where your tokens are going, what it costs, and how to fix it.

🚀 Open App

AI Used

Claude

Frameworks / Engines / Languages

Backend: Node.js serverless functions on Vercel. Front End: Vanilla HTML, CSS, and JavaScript. No framework, no build step. Infrastructure: Vercel (hosting), Supabase (database + auth), Stripe (payments), Cloudflare (CDN + security), Upstash (rate limiting), Resend (email).

Human Involvement

50/50 — collaborative build

Genre

Tools

Version

1.0.0

Submitted

01 May 2026

I built it after noticing your Claude API costs were growing without understanding why. Most prompts are 30-70% waste. Politeness overhead, redundant context, vague instructions but you can’t see it until you break it down. TokenLens makes the invisible visible.

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