The article provides a comprehensive guide on customizing the GraphQL API in a Strapi project, focusing on a use case involving a 'Politician Trust Meter' to assess politicians' trustworthiness using the LIAR dataset. It explains how to enhance Strapi's GraphQL schema by adding a new custom type and extending existing ones, particularly by introducing a PoliticianHonestyStat type to encapsulate aggregated statistics for politicians. The tutorial elaborates on the technical process of utilizing Strapi's GraphQL plugin and Nexus framework for schema definition and customization, providing practical examples and SQL queries to generate dynamic statistics from a relational database structure. The project demonstrates how to effectively integrate and manipulate data within the Strapi environment, with the codebase available on GitHub for experimentation.