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Developer docs

Build apps for the EzyStudio App Store

Small businesses install apps into their EzyStudio site in one click and make them their own with one sentence. These docs cover everything from your application to your first payout, plus the API your app and your tools call.

80%of every sale is yours. EzyStudio keeps 20%.
15thof each month: we pay out the month before.
$0to join. No listing fees or setup fees.

Where to start

New here? Follow this path

Getting started to apply and build your first app, Database for Postgres and migrations, Best practices for the rules and the checklist, then Submitting.

Getting startedApply, get approved and find your way around the developer portal.Building an appWhat an App Store app is, how it installs into a site, versions and media.DatabasePostgres for your app: tagged SQL with examples, migrations and changing your tables over time.Best practicesAuthorization, input, privacy, speed, the Site Cache, and the checklist to run before you submit.App manifestEvery listing field, with the limits the API checks.SubmittingSend your app for review from the developer portal.ReviewWhat reviewers and the automatic checks look at, statuses and timelines.Pricing and payoutsFree or paid, the 80/20 split, refunds and monthly payouts.Site APIThe calls a site's server and the public site endpoints accept.Background jobsQueues, delays, ordered lists and schedules for app sites, and how deliveries reach your code.File storageLet visitors and staff upload photos and documents: grants, uploads, private and public links, limits.Security rulesWhat every app must do, and never do, with keys and data.API referenceEvery public and Site API endpoint, from the OpenAPI document.

Who these docs are for

  • Developers and agencies who want to sell apps and website templates in the App Store.
  • AI coding agents working on an EzyStudio site (Claude Code, Codex, Gemini, Cursor): the Site API page lists every call a site may make to EzyStudio, and the platform rules for agents are served on every site at /api/public/site/v1/agent-docs.
  • Tool builders: the API reference is generated from the API's own routes and validators, and you can download it as openapi.json (OpenAPI 3.1).