Hi, everyone.
Now I’m trying to share image via custom gpt action, but the images is not sent to action correctly.
I tried with two approaches, one is send image urls and another is base64.
First, the image url that gpt sent to action is like this “https: // files.oaiusercontent .com /file-sCZj24xTDghgYgNSjQjhd4?se=2025-09-13T20%3A53%3A34Z&sp=r&sv=2024-11-04&sr=b&rscd=inline&rsct=image/png&skoid=3d47cf50-858b-469e-a4d6-65e058c9295c&sktid=a48cca56-e6da-484e-a814-9c849652bcb3&skt=2025-09-13T11%3A53%3A34Z&ske=2025-09-14T11%3A53%3A34Z&sks=b&skv=2024-11-04&sig=NmwKbnlIeq8l9BpvjLaOsJtE%2BCwCkFqhy1BoEN%2BtKL4%3D” but when I tried download this, 404 error occured, so I open this link with browser but same result.
And next, I tried with base64, but the first only about 500 bytes are sent, the truncated data is sent. And I think this is not appropriate if there’s many images or large images.
If anyone know how to do this, please help me. Thanks.