`images().edit()` rejects image with 400 “expected file but got string”

[danielfariati]

Hi there!

I’m trying to call openAIClient.images().edit(...) in the Java SDK, but I keep getting: 400: Invalid type for 'image': expected one of an array of files or file, but got a string instead.

I’ve tried a few different ways to pass the image, but so far no luck. For example, here’s a minimal repro:

import com.openai.client.OpenAIClient;
import com.openai.client.okhttp.OpenAIOkHttpClient;
import com.openai.models.images.ImageEditParams;
import com.openai.models.images.ImagesResponse;

import java.io.InputStream;
import java.net.URL;

public class ImageEditTest {

    public static void main(String[] args) throws Exception {
        InputStream is = new URL("https://upload.wikimedia.org/wikipedia/en/thumb/7/7d/Lenna_%28test_image%29.png/320px-Lenna_%28test_image%29.png").openStream();

        OpenAIClient client = OpenAIOkHttpClient.fromEnv();
        ImagesResponse response = client.images().edit(
            ImageEditParams.builder()
                .model("gpt-image-1")
                .prompt("Make the image black and white")
                .image(is)
                .build()
        );

        System.out.println(response);
    }
}

1. Am I using .image(InputStream) incorrectly?
2. Is there a bug in the SDK?
3. If I’m doing it wrong, could you share a working Java example?

Thanks in advance for any guidance!

[danielfariati]

Ok, it isn't a bug... If anyone encounter this also, you have to set a filename... So doing something like this works:

public class Main {
    public static void main(String[] args) throws Exception {
        InputStream is = new URL("https://upload.wikimedia.org/wikipedia/commons/c/c1/Test_wiki_logo_notext.png").openStream();

        MultipartField<ImageEditParams.Image> mf = MultipartField.<ImageEditParams.Image>builder()
            .filename("test_image.png")
            .contentType("image/png")
            .value(ImageEditParams.Image.ofInputStream(is))
            .build();

        OpenAIClient client = OpenAIOkHttpClient.fromEnv();

        ImagesResponse response = client.images().edit(
            ImageEditParams.builder()
                .model("gpt-image-1")
                .prompt("Colorize the image")
                .image(mf)
                .build()
        );

        System.out.println(response);
    }
}