nvidia/chrono-edit/lora/upscaler
Transform and refine images with diffusion-based precision, localized LoRA controls, and realism-preserving edits for coherent, high-fidelity visual storytelling and professional-grade design workflows.
Table of contents
1. Get started
Use RunComfy's API to run nvidia/chrono-edit/lora/upscaler. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/nvidia/chrono-edit/lora/upscaler \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7213/media-files/1-1-input.jpg"
}'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/nvidia/chrono-edit/lora/upscaler \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"image_url": "https://playgrounds-storage-public.runcomfy.net/tools/7213/media-files/1-1-input.jpg"
}'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": [
"image_url"
],
"properties": {
"image_url": {
"title": "Image URL",
"description": "The image to upscale.",
"type": "string",
"default": "https://playgrounds-storage-public.runcomfy.net/tools/7213/media-files/1-1-input.jpg"
},
"num_inference_steps": {
"title": "Number of Inference Steps",
"description": "Number of inference steps for the upscaling pass.",
"type": "integer",
"minimum": 2,
"maximum": 50,
"default": 30
},
"lora_scale": {
"title": "LoRA Scale",
"description": "The scale factor for the LoRA adapter.",
"type": "float",
"minimum": 0,
"maximum": 2,
"default": 1
},
"seed": {
"title": "Seed",
"description": "",
"type": "integer",
"default": 0
},
"output_format": {
"title": "Output Format",
"description": "The format of the output image.",
"type": "string",
"enum": [
"jpeg",
"png",
"webp"
],
"default": "jpeg"
}
}
}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" }
}
}
}
}