We’ve supported file uploading in Multi-step API monitors for some time. Until now, the files were always sent as multipart/form-data content, which meant we added some overhead and meta information to the request body. As of this update, however, we also support uploading the file as raw binary data.
We’ll still automatically generate the appropriate headers, but will no longer add any metadata to the request. This way, if your API expects files uploaded as raw binary data, it can still be tested.