Invofox, a Y Combinator-backed document parsing startup, has released a self-serve version of its API. <cite index="4-6">The API turns invoices, payslips, contracts and other documents into structured JSON.</cite> The launch drew 336 upvotes and 30 comments on Product Hunt. The company promises accuracy of 99% or better under a service-level agreement. <cite index="4-10">It bills only for pages it extracts correctly.</cite> Its site cites 99.2% accuracy. <cite index="6-4,6-5">A free tier covers 500 pages with no card required.</cite> <cite index="6-7">The Starter plan covers up to 5,000 pages a month and carries a 99.9% uptime SLA.</cite> <cite index="4-8">Listed certifications are SOC 2, GDPR and ISO 27001.</cite> For AI founders, document extraction is a component that is often cheaper to buy than build. Billing tied to correct output moves error risk to the vendor and makes unit costs easier to forecast than a self-built LLM pipeline. Teams should still test the accuracy claim on their own documents before depending on it.