Worked on stabilizing and extending the morpheus-openapi repository by refining API schema definitions and enhancing credential management features. Focused on aligning user resource schemas with OpenAPI 3.1 standards, addressing null semantics, operationId naming, and type consistency for fields such as linuxKeyPairId. Introduced updates to the user PUT endpoint, enabling secure and backward-compatible management of Linux and Windows credentials through nullable fields. Employed YAML for schema definition and leveraged expertise in API design and OpenAPI Specification to reduce integration friction, minimize runtime errors, and support safer client code generation for downstream tools relying on accurate API documentation.