What is Gem0
Gem0 is a hosted headless CMS for TypeScript developers. You define a content schema; Gem0 stores the content, serves it over tRPC, and generates a typed client for it. Every query and mutation in your code is checked against your actual schema at compile time.
The pieces
Section titled “The pieces”| Piece | What it does |
|---|---|
| Content API | Serves your documents over tRPC at sdk.gem0.dev, authenticated with a per-project API key. |
| GemSync | A CLI that writes gemRouter.ts into your repo: the tRPC router type generated from your schema. |
| SDK packages | @gemzero0/sdk-core (plain TypeScript), @gemzero0/sdk-react (React Query hooks), @gemzero0/sdk-next (Next.js). |
| Dashboard | app.gem0.dev, where editors manage content and you manage projects and API keys. |
How a project fits together
Section titled “How a project fits together”A project holds your collections and documents, and has its own languages and API keys. Agencies group several projects under one account: each client site is a project, billed on one invoice. See agencies and client projects.
Content is modelled as collections built from six field primitives
(string, number, boolean, date, file, link) with modifiers such as required,
arrayOf and translatable. See
collections and fields.
Why the typed client matters
Section titled “Why the typed client matters”When the schema changes, you rerun GemSync and the TypeScript compiler points at every component that no longer matches. That is the whole upgrade path: no hand-written API types, no drift between the CMS and your code.
Gem0 is EU-hosted, run by KangaCoders BV (Belgium) and CanaryCoders SL (Spain), and serves production sites today, including ArmaTerra, Helion Research and KangaCoders.