WunderGraph is a developer tool that focuses on simplifying the way developers build and use APIs. It offers a solution that seamlessly integrates various data sources like databases, REST, and GraphQL APIs into a single GraphQL API. By providing a unified data fetching layer, WunderGraph enables developers to create more efficient, faster, and secure API interactions. Essential features include automatic generation of TypeScript types, optimized query batching, and secure API access controls. WunderGraph is geared towards improving development workflows and accelerating the deployment of web applications.