100+ ideas you can build and start monetizing with x402 👇 x402 TLDR An open source protocol that leverages the 402 payment request HTTP status code. It’s part of Google’s AP2 standard with an upcoming foundation by @Cloudflare & @coinbase It lets you monetize your endpoint with micro payments (no transaction fees). e.g you can use @freepik or @firecrawl_dev with pay-per-use ($0.01) It means: no upfront cost -> earn per use bazaar discovery layer-> no SEO API first -> no frontend AI first -> under served consumer Here’s what you can build: Image format conversion (PNG ↔ JPG ↔ WEBP...) SVG → PNG / PNG → SVG vectorization E-book converter (EPUB ↔ MOBI ↔ PDF) Image ↔ Gif ↔ video CSV to JSON / JSON to CSV CSV Cleaner (remove empty columns, normalize headers) Schema validator: validate JSON/YAML schemas Excel form maker Table extraction: PDF/HTML → structured table (CSV, Google Sheet) Form maker (think GoogleFrom / Typeform on the fly based on user's given info) PowerPoint generator (upload content → PPTX w/ design) Link-in-bio micro-site generator with v0 Component maker with v0 API Text to voiceover API...