Livery – BEAM-native web framework

Livery is a BEAM-native web framework that serves the same router and middleware over HTTP/1.1, HTTP/2, and HTTP/3 from a single runtime.

WebSocket, WebTransport, Server-Sent Events, OpenAPI, MCP, and observability are provided as built-in modules.

This is free and open source software.

Key Features

• Serve HTTP/1.1, HTTP/2, and HTTP/3 using the same handlers, routing, and middleware.
• Tower-style composable middleware pipelines for inbound and outbound requests.
• Streaming support including chunked responses, Server-Sent Events, NDJSON, WebSocket, and WebTransport.
• Generate OpenAPI 3.1 documents and serve Redoc or Swagger UI.
• Validate request bodies against a JSON Schema subset.
• Built-in Model Context Protocol (MCP) Streamable HTTP transport.
• OpenTelemetry-style tracing and metrics.
• JWT, JWKS, OIDC, signed sessions, and token introspection support.
• HTTP client with middleware for timeouts, retries, circuit breaking, and load balancing.
• File responses with byte range support.

Website: github.com/benoitc/livery
Support:
Developer: Enki Multimedia
License: Apache License 2.0

Livery is written in Erlang. Learn Erlang with our recommended free books and free tutorials.

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