Andrey Tarantsov focused on improving documentation quality for cryptography workflows in the team-plain/docs repository. He addressed a critical ambiguity in the request-signing process by updating Markdown-based documentation to explicitly specify HMAC-SHA256 as the required hashing algorithm. This clarification aligned the documentation with the actual implementation, reducing the risk of misconfiguration and supporting secure integrations. By linking documentation updates directly to code changes, Andrey enhanced traceability and consistency across services. His work, centered on documentation and Markdown, improved developer onboarding and reduced support overhead, demonstrating a thoughtful approach to maintaining security standards and technical accuracy in developer-facing materials.