Open Source API & AI Management Platform

Fusio is an open-source, self-hosted API management platform that helps developers build, manage, and scale APIs optimized for web, mobile, and AI agents.

🚀 Overview

Fusio is a comprehensive open-source API management platform that automates repetitive API development tasks like routing, authentication, documentation, rate limiting, SDK generation, and monetization, allowing developers to focus on core business logic.

It solves the problem of building scalable API backends from scratch by providing ready-to-use tools for exposing databases as APIs, orchestrating microservices, integrating with AI agents, and handling developer portals and analytics.

Built for developers, API product teams, indie makers, and organizations creating API-first products, especially those leveraging AI tools and agents. The platform was created to make API development effortless in the AI era.

✨ Key Features

Database API Gateway: Instantly expose legacy SQL/NoSQL databases (MySQL, PostgreSQL, etc.) as REST APIs without custom code.
Microservice Gateway: Securely route, orchestrate, and load-balance traffic between backend services.
Custom API Logic: Implement reusable actions using PHP, JavaScript, or AI-generated code.
AI-Assisted Development: Generate schemas and logic via natural language prompts; MCP integration for AI agents.
API Developer Portal: Self-service OpenAPI/ReDoc docs, interactive testing, and API key management.
SDK Automation: Automatically generate multi-language client SDKs.
API Monetization: Subscription plans, quotas, usage-based billing.
Analytics & Monitoring: Real-time insights into API usage, performance, and errors.

🛠 Tech Stack

Frontend: JavaScript (for apps like developer portal)
Backend: PHP
Database: MySQL, PostgreSQL, SQLite
Auth: Custom (OAuth2, JWT, API keys)
Hosting: Docker, Self-hosted (Composer for deps)

👥 Who Is This For?

This project is useful for:

Developers who want to prototype and deploy APIs quickly without infrastructure hassle
Teams looking for self-hosted API management with AI support and monetization
Indie makers building backend services for web, mobile, and AI agent tools