Leap is a new AI developer agent designed to build and deploy full-stack applications with real backends to AWS or GCP cloud environments. The creators found existing AI app builders lacking in areas like backend infrastructure, isolated testing, and code ownership, so they built Leap with developers in mind. Leap connects to GitHub for code control, provides pull request-style code revisions with diffs, generates architecture diagrams and API documentation, and offers an isolated preview environment. Deployment is possible via open-source tooling or Encore Cloud. It leverages Claude 4 Sonnet and the Encore.ts framework for declarative infrastructure. The platform is designed for new projects or isolated services, acknowledging challenges with larger codebases and offering seamless transitions to local IDEs with the Encore CLI. The team is actively seeking feedback on the platform and how to improve its usefulness.