Developed a backend enhancement for the JustinTong0323/sglang repository, focusing on configurable JSON output formatting for the xgrammar and llguidance backends. The work introduced a server-side option to disable any_whitespace in constrained JSON mode, allowing runtime control over output size and readability. Implemented in Python with an emphasis on backend and API development, this feature enables bandwidth optimization for client integrations and simplifies downstream JSON handling. The solution was delivered as a focused, low-risk change tied to a specific backlog item, providing measurable business value through reduced data transfer and increased deployment flexibility while maintaining clean, maintainable code.