RESTHeart

The Open Source Backend for MongoDB

Instant REST, GraphQL, and WebSocket APIs. No backend code.

Built-in authentication and authorization. Declarative, zero boilerplate.

Need custom logic? Extend it in Java, Kotlin, JavaScript, or TypeScript.

Plus Sophia, the AI assistant: chat with the docs, or vibe code via MCP.

Fully managed, no installation required. Or run it yourself, free and open source, see below.

Core capabilities:

• REST API: Full CRUD, aggregations, filtering, sorting, pagination
• GraphQL: Schema-driven mapping to MongoDB queries
• WebSocket: Real-time change streams and data sync
• SSE: Server-Sent Events for live dashboards, IoT feeds, and event streams
• Authentication and Authorization: JWT, OAuth2, LDAP, MongoDB-based users, ACL rules
• Plugin framework: Extend with Java, Kotlin, JavaScript, or TypeScript for custom business logic
• Sophia AI assistant: Chat with the docs in your browser, or connect Claude, Claude Code, Cursor, or VS Code to the MCP server to vibe code and configure your backend
• Metrics & Monitoring: Built-in Prometheus-compatible metrics endpoint with a real-time browser dashboard at /metrics-ui, tracking request rates, latency percentiles, and HTTP status distribution
• IoT / MQTT: Connect devices and ingest telemetry directly into MongoDB (coming soon)

Available as a Docker image and GraalVM native binary. Built on Java 25, Undertow, and virtual threads.