blackforestlabs/flux-1-kontext/pro/edit
Perform precise, fast local edits with strong prompt control, aspect ratio options, seed reproducibility, and consistent, high-fidelity outputs.
Table of contents
1. Get started
Use RunComfy's API to run blackforestlabs/flux-1-kontext/pro/edit. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/blackforestlabs/flux-1-kontext/pro/edit \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "She is now holding an orange umbrella and smiling",
"image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7063/media-files/usecase1-1-input.webp"
}'2. Authentication
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.
3. API reference
Submit a request
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-1-kontext/pro/edit \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "She is now holding an orange umbrella and smiling",
"image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7063/media-files/usecase1-1-input.webp"
}'Monitor request status
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 request results
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 request
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>"4. File inputs
Hosted file (URL)
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.
5. Schema
Input schema
{
"type": "object",
"title": "Input",
"required": [
"prompt",
"image_url"
],
"properties": {
"prompt": {
"title": "Prompt",
"description": "",
"type": "string",
"default": "She is now holding an orange umbrella and smiling"
},
"image_url": {
"title": "Image",
"description": "",
"type": "string",
"default": "https://playgrounds-storage-public.runcomfy.net/tools/7063/media-files/usecase1-1-input.webp"
},
"seed": {
"title": "Seed",
"description": "",
"type": "integer",
"default": 81030369
},
"aspect_ratio": {
"title": "Aspect Ratio (W:H)",
"description": "",
"type": "string",
"enum": [
"21:9",
"16:9",
"4:3",
"3:2",
"1:1",
"2:3",
"3:4",
"9:16",
"9:21"
],
"default": "16:9"
}
}
}Output schema
{
"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" }
}
}
}
}