mcp-auth-routing-when-using-mcpauthrouter-with-a-baseurl-that-inclu-16537cae

THEN Modify createOAuthMetadata to construct endpoint paths relative to the baseUrl, or adjust the router to prefix all OAuth routes with the baseUrl's path component. Ensure that the authorize, token, and other OAuth URLs include the full path from baseUrl.

// Instead of hardcoding '/authorize', use new URL('./authorize', baseUrl).pathname
const metadata = {
  issuer: baseUrl.origin,
  authorization_endpoint: new URL('./authorize', baseUrl).pathname,
  token_endpoint: new URL('./token', baseUrl).pathname,
};