AtelierBuild civic & operational software by declaring it, not coding it.

Declare entities, actions, surfaces, identity, notifications, analytics, and a citizen portal as data. Atelier generates the running, multi-tenant product around them.

Introduction

Quickstart

Mental model

Declare, don't code

Describe the interesting 20% of your application — its entities, fields, relationships, and rules — in a clear, readable specification. No boilerplate, no scaffolding, no plumbing to maintain. The shape of your domain is the source of truth.

How it works

Generate, don't build

From one declaration, Atelier provisions the full running product — data model, APIs, admin surfaces, citizen portal, and analytics — wired together and ready to use. The platform provides the other 80% so you never assemble it by hand.

What gets generated

Compound by composition

Every capability you add — a new entity, an action, a surface, a notification — composes cleanly with everything already there. Software that grows by accumulation, not rewrites, so each addition makes the next one easier.

The compounding model

Template and fork tenancy

Author once as a template application, then fork it onto each tenant to get an isolated, independently evolvable instance. New tenants come up fully configured from the same declaration, with their own data and their own customizations.

Multi-tenant model

Authorization as data

Access rules are declared alongside your entities and compiled into every query, read, and write. Authorization is tenant-isolated and fail-closed by construction — when a rule is absent, access is denied, never assumed.

Authorization model

Confidence built in

Diagnostics travel with the platform. Declarations are validated as you author them, surfaces are checked before they ship, and a live preview shows exactly what your tenants will see — so you know it works before anyone else does.

Diagnostics & preview

Welcome to Atelier

Atelier is an ontology-native platform for building civic and operational software. Instead of writing an application, you declare one — its entities, actions, surfaces, identity, notifications, analytics, and citizen portal — and the platform generates a complete, running, multi-tenant product around your declaration.

It shares a simple idea with its sibling platform, Martha: declare the interesting 20%, and let the platform provide the 80%. You focus on what makes your domain distinct; Atelier handles the data plane, the execution plane, and the surface plane that every application needs.

New here? Start with the Introduction to understand what Atelier is and who it's for, follow the Quickstart to stand up your first application, then read the mental model to see how declarations become running software.