{ "success": false, "error": { "code", "message" } } with a standard HTTP status: 401 unauthenticated, 403 insufficient scope/permission, 422 validation, 429 rate-limited / insufficient tokens, 404 not found.{ "success": false, "error": { "code", "message" } } with a standard HTTP status: 401 unauthenticated, 403 insufficient scope/permission, 422 validation, 429 rate-limited / insufficient tokens, 404 not found.