Use RunComfy's API to run qwen/qwen-image-3.0/pro/text-to-image. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/qwen/qwen-image-3.0/pro/text-to-image \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A production-grade fantasy character portrait: a silver-armored knight with engraved filigree, volumetric light through cold fog, hyper-detailed textures, dramatic cinematic key light."
}'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/qwen/qwen-image-3.0/pro/text-to-image \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A production-grade fantasy character portrait: a silver-armored knight with engraved filigree, volumetric light through cold fog, hyper-detailed textures, dramatic cinematic key light."
}'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 schema",
"required": [
"prompt"
],
"properties": {
"prompt": {
"title": "Prompt",
"description": "Describe the subject, setting, style, and any exact text you want rendered. Put wording in quotes to render it verbatim.",
"type": "string",
"default": "A production-grade fantasy character portrait: a silver-armored knight with engraved filigree, volumetric light through cold fog, hyper-detailed textures, dramatic cinematic key light."
},
"resolution": {
"title": "Resolution",
"description": "Output detail tier. Choose 1k for faster drafts or 2k for maximum detail.",
"type": "string",
"enum": [
"1k",
"2k"
],
"default": "2k"
},
"aspect_ratio": {
"title": "Aspect Ratio (W:H)",
"description": "The aspect ratio of the generated image.",
"type": "string",
"enum": [
"1:1",
"16:9",
"9:16",
"4:3",
"3:4"
],
"default": "1:1"
},
"enable_prompt_expansion": {
"title": "Enable Prompt Expansion",
"description": "Let the model enrich a short prompt with extra detail before generating. Turn off when your prompt is already precise.",
"type": "boolean",
"default": true
},
"seed": {
"title": "Seed",
"description": "Random seed for reproducibility. Use -1 for a random seed each run.",
"type": "integer",
"default": -1
}
}
}{
"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 Models, enabling artists to harness the latest AI tools to create incredible art.