improve

Signed-off-by: Grant Linville <[email protected]>

Author: g-linville

pkg/loader/url.go

@@ -135,15 +135,17 @@ func getWithDefaults(req *http.Request) ([]byte, error) {
 	originalPath := req.URL.Path
 
 	// First, try to get the original path as is.
-	// It might be a raw tool file or an OpenAPI definition.
+	// It might be an OpenAPI definition.
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
 		return nil, err
 	}
 	defer resp.Body.Close()
 
 	if resp.StatusCode == http.StatusOK {
-		return io.ReadAll(resp.Body)
+		if toolBytes, err := io.ReadAll(resp.Body); err == nil && isOpenAPI(toolBytes) != 0 {
+			return toolBytes, nil
+		}
 	}
 
 	for i, def := range types.DefaultFiles {