SpectaQL is an open-source tool that generates static, interactive API documentation from a GraphQL schema. The main strength of SpectaQL lies in its ability to automate the tedious task of maintaining and updating API documentation. The user only needs to update their GraphQL schema, and SpectaQL takes care of the rest, ensuring that the documentation stays up-to-date with the API. SpectaQL's interactive interface allows users to explore API functionalities and test queries in real-time.