Chris Thornham developed HTTP OPTIONS support for the SolidStart REST API, focusing on improving CORS preflight request handling for public-facing endpoints. By updating the HTTP_METHODS array within the solidjs/solid-start repository to include the OPTIONS method, Chris enabled the API to respond correctly to browser preflight checks, enhancing interoperability and developer experience. The work was implemented using JavaScript and leveraged skills in API development and full stack development, particularly with Node.js. While the contribution addressed a specific feature rather than a broad set of changes, it demonstrated a clear understanding of HTTP protocol requirements and practical API design considerations.