Flux Image Editing

curl -X POST "https://api2.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-2-pro",
    "prompt": "Keep the same main subject. Change the background to a clean pale blue studio backdrop and preserve the original lighting.",
    "input_image": "https://example.com/source.png",
    "width": 1792,
    "height": 1024,
    "output_format": "png"
  }'

curl -X POST "https://api2.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "flux-2-pro",
    "prompt": "Use image 1 as the red robot, image 2 as the greenhouse background, and image 3 as the skateboard. Create one coherent scene: the robot rides the yellow skateboard in front of the turquoise greenhouse. Preserve the white scarf, orange door, purple wheels, and black star sticker.",
    "input_image": "https://example.com/source_1_red_robot.png",
    "input_image_2": "https://example.com/source_2_glass_greenhouse.png",
    "input_image_3": "https://example.com/source_3_yellow_skateboard.png",
    "width": 1792,
    "height": 1024,
    "output_format": "png"
  }'

cd ~/Downloads
export LAOZHANG_API_KEY="YOUR_API_KEY"

IMG1=$(base64 < source_1_red_robot.png | tr -d '\n')
IMG2=$(base64 < source_2_glass_greenhouse.png | tr -d '\n')
IMG3=$(base64 < source_3_yellow_skateboard.png | tr -d '\n')

curl -X POST "https://api2.laozhang.ai/v1/images/generations" \
  -H "Authorization: Bearer $LAOZHANG_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- \
  -o flux_local_multi_response.json <<EOF
{
  "model": "flux-2-pro",
  "prompt": "Combine the three provided reference images into one coherent new image. Use image 1 as the red robot, image 2 as the turquoise glass greenhouse background, and image 3 as the yellow skateboard. The final image must clearly include details from all three references, not a collage or split-screen.",
  "input_image": "data:image/png;base64,$IMG1",
  "input_image_2": "data:image/png;base64,$IMG2",
  "input_image_3": "data:image/png;base64,$IMG3",
  "width": 1792,
  "height": 1024,
  "output_format": "png"
}
EOF

python3 - <<'PY'
import json
import urllib.request

with open("flux_local_multi_response.json") as f:
    url = json.load(f)["data"][0]["url"]

urllib.request.urlretrieve(url, "flux_local_multi_edit.png")
print("saved: flux_local_multi_edit.png")
PY

import requests

API_KEY = "YOUR_API_KEY"
BASE_URL = "https://api2.laozhang.ai/v1"

def flux_edit(prompt, image_urls, width=1024, height=1024, model="flux-2-pro"):
    if not image_urls:
        raise ValueError("image_urls must contain at least one image")
    if len(image_urls) > 8:
        raise ValueError("Flux 2 supports up to 8 reference images")

    payload = {
        "model": model,
        "prompt": prompt,
        "input_image": image_urls[0],
        "width": width,
        "height": height,
        "output_format": "png",
    }
    for index, image_url in enumerate(image_urls[1:], start=2):
        payload[f"input_image_{index}"] = image_url

    response = requests.post(
        f"{BASE_URL}/images/generations",
        headers={
            "Authorization": f"Bearer {API_KEY}",
            "Content-Type": "application/json",
        },
        json=payload,
        timeout=240,
    )
    response.raise_for_status()
    return response.json()["data"][0]["url"]

result_url = flux_edit(
    prompt="Use image 1 as the subject, image 2 as the background, and image 3 as the prop. Fuse them into one coherent scene.",
    image_urls=[
        "https://example.com/image1.png",
        "https://example.com/image2.png",
        "https://example.com/image3.png",
    ],
    width=1792,
    height=1024,
)
print(result_url)

import base64
import mimetypes
from pathlib import Path

def file_to_data_url(path):
    path = Path(path)
    mime_type = mimetypes.guess_type(path.name)[0] or "image/png"
    encoded = base64.b64encode(path.read_bytes()).decode("utf-8")
    return f"data:{mime_type};base64,{encoded}"

result_url = flux_edit(
    prompt="Use image 1 as the red robot, image 2 as the greenhouse background, and image 3 as the yellow skateboard. Create one coherent new scene.",
    image_urls=[
        file_to_data_url("source_1_red_robot.png"),
        file_to_data_url("source_2_glass_greenhouse.png"),
        file_to_data_url("source_3_yellow_skateboard.png"),
    ],
    width=1792,
    height=1024,
)
print(result_url)

Use image 1 as the character, image 2 as the background, and image 3 as the product.
Create one coherent commercial poster.
Preserve the character's clothing, the background lighting, and the product logo.
Do not create a collage or split-screen layout.