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Documentation Index

Fetch the complete documentation index at: https://runcrate.ai/docs/llms.txt

Use this file to discover all available pages before exploring further.

Edit existing images using natural language. Change colors, swap backgrounds, remove objects, apply style transfer — one endpoint, no masking.

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Available models

ModelStrengths
FLUX.1 Kontext ProFast edits, good instruction following
FLUX.1 Kontext MaxHighest quality, production assets
Wan2.6 Image EditObject removal, background replacement
Qwen Image EditColor/material changes, CJK text rendering

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Basic image edit

from runcrate import Runcrate

client = Runcrate(api_key="rc_live_YOUR_API_KEY")

edited = client.models.generate_image(
    model="black-forest-labs/FLUX.1-kontext-pro",
    prompt="Change the car color to matte black",
    image="./red-car.png",
)
edited.data[0].save("black-car.png")
image accepts a file path (auto base64-encoded), a URL, or raw base64 data.

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Background removal

from runcrate import Runcrate
client = Runcrate(api_key="rc_live_YOUR_API_KEY")

result = client.models.generate_image(
    model="Wan-AI/Wan2.6-Image-Edit",
    prompt="Remove the background, replace with clean white studio backdrop",
    image="./product-on-table.png",
)
result.data[0].save("product-isolated.png")

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Style transfer

result = client.models.generate_image(
    model="black-forest-labs/FLUX.1-kontext-max",
    prompt="Convert to a watercolor painting style with soft pastel colors",
    image="./city-photo.jpg",
)
result.data[0].save("city-watercolor.png")

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Batch editing

from runcrate import Runcrate
from pathlib import Path
from concurrent.futures import ThreadPoolExecutor

client = Runcrate(api_key="rc_live_YOUR_API_KEY")
output = Path("./clean"); output.mkdir(exist_ok=True)

def clean(p: Path):
    r = client.models.generate_image(model="Qwen/Qwen-Image-Edit", prompt="Remove background, white backdrop", image=str(p))
    r.data[0].save(str(output / p.name))

with ThreadPoolExecutor(max_workers=4) as pool:
    pool.map(clean, list(Path("./raw").glob("*.png")))

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Tips

  • Kontext Pro vs Max. Pro for fast iteration, Max for final production assets.
  • Be specific. “Change the sky to vivid cerulean blue with wispy cirrus clouds” beats “make the sky bluer.”
  • Only describe the change. The models preserve the subject — describe only what should change.