For those who have specialized needs not covered by our standard products, THC offers a suite of API (Application Programming Interface) libraries. These libraries provide low-level access to all of our models from different programming environments, such as Excel VBA or C++. In addition to function level documentation, we provide the source code to the corresponding E-Series application so you can see how the functions are used in real-world examples. With these libraries, you can interface our models to your existing systems, or build new proprietary applications. The libraries provide a complete fixed income analytics infrastructure, including interest rate models, security valuation models, and various derived analytical calculations, such as key rate sensitivities and return attribution. The libraries incorporate THC's years of modeling and programming expertise, and would be difficult, time-consuming, and costly to attempt to duplicate. Instead, focus on your specific needs and build off our platform to reduce your time to delivery, and increase the robustness and accuracy of your application.