FastAgency Review — Self-Hosted AI Tool
Our review of FastAgency — features, strengths, and trade-offs.
FastAgency is an open-source framework designed to accelerate the transition from prototype to production for multi-agent AI workflows. Built on top of AG2 (formerly AutoGen), it provides a unified programming interface for deploying agentic workflows in both development and production settings. With just a few lines of code, you can create web chat applications or REST API services that interact with your agents. FastAgency supports scalable distributed systems using NATS message brokers, integrates seamlessly with external APIs via OpenAPI specs, and includes a built-in Tester class for CI/CD pipelines. It offers multiple UI options including ConsoleUI for terminal-based interaction and MesopUI for web-based applications.