Open Self Service (O2S)

Framework for building composable customer self-service portals.

Open Self Service is an open-source development kit that simplifies the creation of self-service frontend applications by integrating multiple headless APIs into a scalable frontend. Its flexibility allows for many customizations and lets you build various types of composable frontends.

🚀 Key Features

• Composable – In short: API-agnostic. Compose customer experience by combining multiple "backend capabilities" into seamless, fully decoupled frontend.
• Next.js Frontend Starter – Robust Next.js-based frontend including basic customer portal pages and content management capabilities.
• API Harmonization Server – Integration layer for data aggregation, orchestration and normalization. Provides vendor lock-in safeness and better maintainability.
• TypeScript SDK – Easily interact with the Harmonization Server in the frontend app or any web, mobile, other TS-based apps.
• Pre-built Integrations – Ready integrations so that you can set up your solution faster.
• Extensibility – Customize UI components, add new pages, add new API integrations, adapt to your needs.

📖 Documentation

Check out the full documentation to get started.

🛠️ Installation

To set up a new O2S project, use the create-o2s-app starter and follow the installation steps in the documentation.

npx create-o2s-app my-project
cd my-project
npm run dev

🔧 Running the Project

To start all services in development mode, use:

npm run dev

To run individual components:

cd apps/api-harmonization && npm run dev  # Start API Harmonization Server
cd apps/frontend && npm run dev  # Start Next.js Frontend

For more details, check the Running the project guide.

🏗️ Project Structure

O2S follows a monorepo structure using Turborepo for managing apps and internal packages.

/apps
  /frontend             # Next.js frontend
  /api-harmonization    # API Harmonization Server (NestJS)

/packages
  /ui    # UI component library (shadcn/ui, Tailwind)

For a detailed breakdown, visit Project structure.

🖥️ Demo app

🔌 Available Integrations

O2S includes pre-built integrations and allows you to extend functionality as needed.

Integration	Status
StrapiCMS	✅ Available
NextAuth	✅ Available
Redis cache	✅ Available
Search (Algolia)	🔄 In progress
CRM (TBD)	🔄 Planned
ERP / Commerce (TBD)	🔄 Planned

🔥 Why Open Self Service?

• Fully composable – Integrate multiple backend services and build your solution by combining their capabilities.
• Headless & API-first – Integrate multiple services seamlessly.
• Future-proof – Build backend-agnostic customer portals. Swap backends without breaking the frontend.
• Modern stack – Built with Next.js, shadcn/ui, TypeScript, NestJS.

🤝 Contributing

We welcome contributions! If you’d like to contribute, please check the Contribution Guide.

📩 Stay Updated

• Website: openselfservice.com
• LinkedIn: /company/open-self-service/
• Twitter/X: @openselfservice
• GitHub Discussions: Join the conversation

📜 License

Open Self Service is open-source software licensed under the MIT License.

Built by Hycom

O2S is maintained as an open-source project by hycom.digital - a Polish tech company that delivers enterprise digital self-service and e-commerce solutions.