Over a two-month period, contributed to the supabase/auth repository by focusing on both feature development and documentation quality. Delivered a new Resend OTP endpoint, updating the OpenAPI schema and README to ensure accurate API validation and clear usage examples. Enhanced onboarding for macOS contributors by adding a detailed setup guide to CONTRIBUTING.md, streamlining the process for new developers. Addressed documentation inconsistencies by correcting authentication build and run command syntax, reducing setup errors. Work involved API design, technical writing, and OpenAPI Specification, utilizing Markdown and YAML to maintain clarity and reliability across both code and supporting documentation for the project.