Use RunComfy's API to run blackforestlabs/flux-2/flash/edit. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-2/flash/edit \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "Change the flowers and cup to red, and a bright background",
"image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7298/media-files/input-1-1.png"
]
}'Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.
Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-2/flash/edit \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "Change the flowers and cup to red, and a bright background",
"image_urls": [
"https://playgrounds-storage-public.runcomfy.net/tools/7298/media-files/input-1-1.png"
]
}'Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").
curl --request GET \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
--header "Authorization: Bearer <token>"Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.
curl --request GET \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
--header "Authorization: Bearer <token>"Cancel a queued job by request_id, in-progress jobs cannot be cancelled.
curl --request POST \
--url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
--header "Authorization: Bearer <token>"Provide a publicly reachable HTTPS URL. Ensure the host allows server‑side fetches (no login/cookies required) and isn't rate‑limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre‑signed URLs for private assets.
{
"type": "object",
"title": "Input",
"required": [
"prompt",
"image_urls"
],
"properties": {
"prompt": {
"title": "Prompt",
"description": "The prompt to edit the image.",
"type": "string",
"default": "Change the flowers and cup to red, and a bright background"
},
"image_urls": {
"title": "Images",
"description": "The URLs of the images for editing. A maximum of 4 images are allowed; if more are provided, only the first 4 will be used.",
"type": "array",
"items": {
"type": "string",
"format": "image_uri"
},
"maxItems": 4,
"default": [
"https://playgrounds-storage-public.runcomfy.net/tools/7298/media-files/input-1-1.png"
]
},
"guidance_scale": {
"title": "Guidance Scale",
"description": "Guidance Scale is a measure of how closely the model should adhere to the prompt when generating or editing the image.",
"type": "float",
"minimum": 0,
"maximum": 20,
"default": 2.5
},
"seed": {
"title": "Seed",
"description": "",
"type": "integer"
},
"image_size": {
"title": "Image Size",
"description": "",
"type": "string",
"enum": [
"square_hd",
"square",
"portrait_4_3",
"portrait_16_9",
"landscape_4_3",
"landscape_16_9"
],
"default": "square_hd"
},
"output_format": {
"title": "Output Format",
"description": "The format of the generated image.",
"type": "string",
"enum": [
"jpeg",
"png",
"webp"
],
"default": "png"
}
}
}{
"output": {
"type": "object",
"properties": {
"image": {
"type": "string",
"format": "uri",
"description": "single image URL"
},
"video": {
"type": "string",
"format": "uri",
"description": "single video URL"
},
"images": {
"type": "array",
"description": "multiple image URLs",
"items": { "type": "string", "format": "uri" }
},
"videos": {
"type": "array",
"description": "multiple video URLs",
"items": { "type": "string", "format": "uri" }
}
}
}
}RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Playground, enabling artists to harness the latest AI tools to create incredible art.