Recraft V4.1 Utility Pro uses the model ID recraft/v4.1/utility/pro/text-to-image. Recraft V4.1 Utility Pro generates images from text prompts with customizable resolution, aspect ratio, output format, and color options. Users can specify background colors and a palette of colors to influence the image creation process.
1. Calling the API
Send requests to https://api.higgsfield.ai/recraft/v4.1/utility/pro/text-to-image with a JSON body matching the parameters below.
Install
Install an official server-side SDK. cURL needs no package.
npm install @higgsfield/clientSetup
Keep credentials in server-side environment variables. The SDKs accept the same KEY_ID:KEY_SECRET value under their documented variable names.
export HF_CREDENTIALS="YOUR_KEY_ID:YOUR_KEY_SECRET" # TypeScript
export HF_KEY="YOUR_KEY_ID:YOUR_KEY_SECRET" # Python and cURLRequest parameters
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
colors | array[object] | No | — | Colors. |
prompt | string | Yes | — | Prompt. Minimum length: 1. Maximum length: 10000. |
resolution | string | No | "2k" | Resolution. Options: 2k. |
aspect_ratio | string | No | "1:1" | Aspect ratio. Options: 1:1, 2:1, 1:2, 3:2, 2:3, 4:3, 3:4, 5:4, 4:5, 6:10, 14:10, 10:14, 16:9, 9:16. |
output_format | string | No | "jpg" | Output format. Options: jpg, png, webp. |
background_color | object | No | — | Background color. |
2. Authentication
The official SDKs read credentials from the server environment and send the required Authorization: Key KEY_ID:KEY_SECRET header.
API Key
Never expose the secret in browser-side code or commit it to source control. The TypeScript SDK is server-side only. For direct HTTP calls, use:
Authorization: Key $HF_KEY3. Queue
subscribe submits the asynchronous request and waits for a terminal result. The TypeScript SDK polls automatically when withPolling: true; the Python SDK's synchronous subscribe call also waits. A completed request returns generated files in the images array.
Submit and wait
import { config, higgsfield } from "@higgsfield/client/v2";
config({
credentials: process.env.HF_CREDENTIALS,
});
const result = await higgsfield.subscribe(
"recraft/v4.1/utility/pro/text-to-image",
{
input: {
"prompt": "A cinematic scene at sunset",
"resolution": "2k",
"aspect_ratio": "1:1",
"output_format": "jpg"
},
withPolling: true,
},
);
console.log(result);Explicit lifecycle control
Use the Python SDK when a worker needs explicit status, result, or cancellation control for an existing request. The TypeScript v2 client currently exposes automatic polling through subscribe.
import higgsfield_client
request_id = "{request_id}"
status = higgsfield_client.status(request_id=request_id)
result = higgsfield_client.result(request_id=request_id)
higgsfield_client.cancel(request_id=request_id)