apioo/fusio

Self-Hosted API Management for Builders

What it solves

Fusio is an open-source API management platform that simplifies the process of turning internal business logic, legacy databases, and microservices into professional, scalable API products. It removes the manual effort of building API gateways, developer portals, and SDKs from scratch, while providing a bridge for AI agents to interact with backend systems.

How it works

Fusio acts as a self-hosted backend platform and API gateway. It allows developers to define "Actions" (PHP classes or worker scripts in JS/Python) that handle request logic. These actions are then bound to "Operations" to expose them as REST endpoints. The platform includes a native Model Context Protocol (MCP) integration to make these APIs accessible to AI ecosystems and an AI-assisted development feature that generates backend logic from natural language prompts using providers like Ollama, ChatGPT, or Gemini.

Who it’s for

It is designed for developers and businesses looking to expose legacy SQL/NoSQL databases as APIs, orchestrate microservices, or build custom backend logic that can be consumed by both human developers and autonomous AI agents.

Highlights

  • AI Agent Integration: Native MCP support allows backend logic to be used as tools for AI agents.
  • AI-Assisted Coding: Generate custom backend logic and schemas using natural language prompts.
  • Database Gateway: Instantly convert legacy databases (MySQL, PostgreSQL, etc.) into REST APIs.
  • Full API Lifecycle: Includes an automated developer portal, SDK generation for multiple languages, and monetization tools (subscriptions and quotas).
  • Multi-Language Support: Build logic via PHP classes or use Workers for JavaScript and Python.

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