Backends for OpenBB

Why it's ranked here

This is useful because it documents the actual integration contract through runnable examples and validation scripts. It goes beyond a minimal starter by covering layouts, endpoint responses, server-side tables, iframe messaging, and MCP. The collection remains example-driven, so production decisions still belong to the adopter.

What's good

The validators catch malformed widget definitions, invalid types, broken layout references, grid overflow, deprecated table configuration, and unexpected endpoint response shapes. The examples progress from a small greeting to pagination, filtering, sorting, grouping, embedded interfaces, and tool-enabled portfolio actions.

Tradeoffs

Most examples use Python and FastAPI, although the protocol itself permits other languages. CORS setup remains the developer’s responsibility. Built-in authentication supports configured headers or query parameters, with other methods requiring coordination. The server-side table example implements SQLite and MySQL connections, but its Snowflake connection is explicitly unfinished.

How to use it well

Use it when an engineer owns a data source and needs a concrete OpenBB integration contract. Start small, define widgets, run structural validation, launch locally, then test live responses before deployment. Treat the advanced examples as patterns, not production infrastructure. You still supply real data, hosting, security policy, and operational controls.

Observed

Primary language

Python

Core interface

HTTP endpoints serving JSON widget data and configuration

Optional interface

A Streamable HTTP MCP server example exposes portfolio tools alongside Workspace routes

Validation surface

Command-line validators cover widget definitions, app layouts, and live endpoint responses

Example frameworks

FastAPI, Streamlit, Starlette, and FastMCP

Database example support

The server-side row model example implements SQLite and MySQL; Snowflake is configured but not implemented

Hosting model

Integrations may be hosted internally or externally