CharityBase serves as a free and open-source database along with a GraphQL API, consolidating disparate data sources from organizations such as the Charity Commission, Companies House, 360 Giving, various charity websites, the ONS, and social media into a unified, cleaned, normalized, and easily searchable dataset. This platform facilitates a public portal where users can access comprehensive profiles of UK charities, which include financial information, governance structures, and activity details, while also providing a single GraphQL endpoint that generates structured JSON responses for custom queries regarding counts, aggregates, and detailed listings. Aimed at simplifying the burdensome tasks of data collection and cleaning, CharityBase empowers startups, grantmakers, and researchers to create digital tools like dashboards, reports, and applications for grant finding, all without the need to maintain their own data management systems. Additionally, its API is built to accommodate both GET and POST requests, supports variable-driven queries and pagination, and features live interactive playgrounds for efficient prototyping, all supported by consistently updated records that maintain an audit trail. Furthermore, this streamlined approach not only enhances accessibility to vital data but also fosters a collaborative environment for innovation within the charity sector.