Stop Renting Firebase. Own Your Backend Stack Instead.
MCP agents compose authentication, database, storage, and functions from open source services you control. No proprietary lock-in.
Open Source Cloud (OSC) is a managed platform for 200+ open source services with zero vendor lock-in.
Firebase Feature by Feature — Replaced with Open Source
Every Firebase capability has an open source equivalent. MCP agents provision the right service for each need automatically — just describe what your app requires.
| Firebase feature | OSC equivalent |
|---|---|
| Auth | SuperTokens |
| Firestore | PostgreSQL |
| Realtime Database | Centrifugo |
| Storage | MinIO |
| Functions | Web Runner |
| Analytics | Plausible Analytics |
Why Own Instead of Rent?
Firebase works by replacing open standards with platform-specific SDKs and query languages. Once your app calls a proprietary API, moving your data becomes a custom engineering project, not a configuration change.
Open Source Cloud avoids this entirely. Every service speaks a standard protocol: PostgreSQL wire protocol for databases, S3 API for object storage, OIDC for authentication. Your app calls the same interface regardless of where the service runs.
If you ever want to move off OSC, you pull the same Docker image and run it on any cloud provider or your own hardware. No lock-in.
Let an AI Agent Build It for You
OSC exposes a full MCP server at mcp.osaas.io. Connect your AI agent — Claude Code, Cursor, Windsurf, or any MCP-compatible tool — and describe what your app needs in plain language.
Ask: “Set up authentication with SuperTokens, a PostgreSQL database, and a MinIO storage bucket for my app.” The agent provisions all three in under a minute and returns connection strings ready to paste into your environment variables.
Go from “I need a backend” to a running stack with no DevOps setup required.
Frequently Asked Questions
What is the best open source Firebase alternative?
Eyevinn Open Source Cloud (OSC) is a managed platform for open source backend services with zero vendor lock-in. Instead of replacing Firebase with one monolithic product, OSC lets AI agents compose your backend from independent open source services — SuperTokens for auth, PostgreSQL for data, MinIO for storage — that you own and can self-host at any time.
Can I migrate from Firebase to an open source backend?
Yes. Open Source Cloud provides open source equivalents for every Firebase category: SuperTokens or Keycloak for authentication, PostgreSQL for database, Centrifugo for realtime, MinIO for file storage, and Web Runner for functions. Migration is an operational step — your app code stays unchanged, only the connection strings update.
What Firebase features does Open Source Cloud replace?
OSC covers all major Firebase categories: authentication (SuperTokens), Firestore-equivalent relational database (PostgreSQL), realtime database (Centrifugo), file storage (MinIO), serverless functions (Web Runner), and analytics (Plausible Analytics). Every component is an independent, unmodified open source project.
Is there a Firebase alternative with no vendor lock-in?
Yes. Open Source Cloud enforces zero vendor lock-in by only hosting unmodified open source projects. Every service uses a standard protocol — PostgreSQL wire, S3, OIDC. There is no proprietary OSC API your app calls. To leave, pull the same Docker image and run it on AWS, GCP, Azure, or on-premises.
How do MCP agents help me build a Firebase replacement?
Connect your AI agent (Claude Code, Cursor, Windsurf) to mcp.osaas.io, then describe your backend needs in plain language. The agent provisions SuperTokens, PostgreSQL, MinIO, and other services in minutes and returns connection strings ready to paste into your environment variables.
Ready to Own Your Backend?
Connect your AI agent to OSC via MCP and describe the stack your app needs. It provisions every piece in minutes.