Tom Droza enhanced the API documentation for the NHSDigital/communications-manager-api repository, focusing on message delivery failures and personalisation fields. He collaborated closely with a content designer to standardise failure-time definitions and personalisation data across multiple message channels, ensuring clarity and consistency for both internal teams and external developers. Using Markdown and applying skills in API design and technical writing, Tom updated the documentation to reflect accurate delivery failure timings and improved usability. This work addressed integration friction by making the API easier to understand and adopt, contributing to a smoother onboarding process for downstream consumers and partner developers.