Apollo Sandbox is a GraphQL IDE that allows developers to write queries and manage their graphs in a more intuitive way. It was previously only available on the Apollo Studio domain, but is now available for embedding on any website through HTML or using Apollo Server with a new embed parameter. Sandbox offers features such as saved operations in the cloud, schema diffs and checks, automatic schema reference, and integration with Apollo Explorer, which is one of the most sophisticated GraphQL IDEs in the ecosystem. The goal of Sandbox is to provide developers with more control over their network requests and to fill gaps in GraphQL tooling, making it a powerful tool for building and managing GraphQL applications.