During March 2026, Phuong Nguyen contributed to the cloudflare/workers-oauth-provider repository by implementing RFC 7591-compliant client registration responses. Phuong enhanced the API to include client_secret_expires_at and client_secret_issued_at fields, ensuring confidential clients are handled according to the OAuth 2.0 Dynamic Client Registration specification. This work, developed in TypeScript and focused on secure API design, improved interoperability with OAuth clients and reduced integration friction. By collaborating closely with other developers through co-authored commits and code reviews, Phuong delivered a feature that streamlines client onboarding and support, demonstrating depth in API development and standards compliance within a short project period.