In January 2026, Chaitanya Bansal developed the FX Retail API Suite for the SetuHQ/docs repository, focusing on enabling foreign-exchange retail operations. He implemented new ValAdd and Mandate APIs, updated the existing Payment and List Billers APIs, and introduced webhook support to facilitate event-driven integrations. Using JSON for data interchange and applying backend development and API design skills, he ensured consistency and traceability across the suite. Chaitanya also produced a concise one-page summary document to streamline developer onboarding. The work established a robust FX-enabled retail workflow, broadened cross-border payment capabilities, and laid a foundation for future enhancements and maintainability.