Kjawltd worked on the hmrc/pillar2-submission-api repository, delivering a comprehensive documentation upgrade for the Pillar 2 Submission API. Focusing on Markdown and technical writing, Kjawltd introduced detailed guides covering error handling, fraud prevention, testing, and versioning, while updating the API overview to align with evolving Pillar 2 regulations. This work aimed to clarify API behavior and constraints, streamline developer onboarding, and reduce integration time by providing clear, structured reference material. Although no bugs were fixed during this period, the depth of documentation improvements demonstrated a strong emphasis on knowledge transfer and alignment with ongoing engineering efforts within the project.