Replit Agent is an AI-powered application builder that converts natural language descriptions into fully functional, production-ready apps and websites. Users describe what they want to build in a simple chat interface, and the agent autonomously handles code generation, debugging, and deployment without requiring any coding experience.

The agent includes Extended Thinking and High Power model options for more complex or open-ended requests, such as performance optimizations and design overhauls. It connects seamlessly to Replit's built-in database and user authentication services, as well as third-party integrations including Stripe and OpenAI, with API keys stored securely within the platform.

A core feature of Replit Agent is its self-testing capability. During the build process, the agent periodically runs browser-based tests on the application it is building, generates a report of issues found, and automatically fixes them in a reflection loop. According to the site, this proprietary testing system is significantly faster and more cost-effective than competing approaches.

Replit Agent can also build other agents and automate workflows using natural language, enabling users to create automations that integrate with tools like Slack or email. Customers from companies including Google, Anthropic, Coinbase, and Oscar Health are shown as users on the official product page.