Credits aren't just something you buy. Publish a book that earns real reader engagement, and xDocs pays a share of it back to you as credits — which fund your next generation.
The loop is deliberate: the platform only grows if what gets published is worth reading, so the incentive is aimed at quality, not volume. A book nobody opens earns nothing back; a book people actually finish and return to does.
A flat monthly fee rewards logging in. A usage-funded loop rewards writing something someone else wanted to read. We think that's the healthier thing to optimize for, even though it's the harder one to build.