Willy Au expanded OAuth credential provider support in the dust-tt/dust repository by adding McpStatic as a valid provider, focusing on backend development using Rust. He updated the provider validation logic and refined error messaging to accurately reflect the expanded set of supported providers, which improved clarity for operators and reduced integration friction for clients using diverse credential configurations. This work addressed compatibility gaps for McpStatic-based setups and aligned with ongoing efforts to broaden authentication support. The implementation demonstrated a targeted, incremental approach to feature development, emphasizing maintainability and clear communication in OAuth workflows without introducing unnecessary complexity or risk.