GraphQL DevTools is a Firefox extension tailored for developers engaging with GraphQL APIs. It provides essential features for monitoring and debugging network requests, presenting a clear overview of all GraphQL requests made. The intuitive interface makes it simple to track and analyze requests, showcasing the raw GraphQL strings alongside a computed view that reflects server interpretation, which aids in debugging.

Additionally, the extension enhances the readability of responses by formatting them effectively, making it easier for developers to understand the data received. Built on the open-source graphql-network project, GraphQL DevTools serves as a critical resource for web developers, facilitating a more efficient debugging experience and deeper insight into GraphQL interactions.