MiniMax H3 — API reference

MiniMax H3 uses the model ID minimax/h3/reference-to-video. MiniMax H3 generates videos from reference images or videos using Video Generation V2. Users provide prompts, reference media URLs, and optional audio to create videos up to 15 seconds with customizable resolution and aspect ratio.

1. Calling the API

Send requests to https://api.higgsfield.ai/minimax/h3/reference-to-video with a JSON body matching the parameters below.

Install

Install an official server-side SDK. cURL needs no package.

npm install @higgsfield/client

Setup

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 cURL

Request parameters

Parameter	Type	Required	Default	Description
`prompt`	`string`	Yes	`—`	Prompt. Minimum length: 1.
`duration`	`integer`	No	`5`	Duration. Minimum: 5. Maximum: 15.
`audio_urls`	`array[string]`	No	`—`	Reference audio URLs.
`image_urls`	`array[string]`	No	`—`	Reference image URLs.
`resolution`	`string`	No	`"2K"`	Resolution. Options: 2K.
`video_urls`	`array[string]`	No	`—`	Reference video URLs.
`aspect_ratio`	`string`	No	`"auto"`	Aspect ratio. Options: auto, adaptive, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16.
`aigc_watermark`	`boolean`	No	`false`	AIGC watermark.

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_KEY

3. 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 the generated file in the video field.

Submit and wait

import { config, higgsfield } from "@higgsfield/client/v2";

config({
  credentials: process.env.HF_CREDENTIALS,
});

const result = await higgsfield.subscribe(
  "minimax/h3/reference-to-video",
  {
    input: {
      "prompt": "A cinematic scene at sunset",
      "duration": 5,
      "resolution": "2K",
      "aspect_ratio": "auto",
      "aigc_watermark": false
    },
    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)