Use RunComfy's API to run minimax/minimax-h3-fast/text-to-video. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/minimax/minimax-h3-fast/text-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A woman with fair skin and auburn hair paddles a bright orange kayak across a still alpine lake in the Swiss Alps at dawn. Dark pine trees reflect in pale blue water as mist lifts. Slow push-in. No signs, no letters, and no writing anywhere in the frame."
}'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/minimax/minimax-h3-fast/text-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"prompt": "A woman with fair skin and auburn hair paddles a bright orange kayak across a still alpine lake in the Swiss Alps at dawn. Dark pine trees reflect in pale blue water as mist lifts. Slow push-in. No signs, no letters, and no writing anywhere in the frame."
}'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": "What should happen in the clip: subject, action, camera, and sound.",
"type": "string",
"default": "A woman with fair skin and auburn hair paddles a bright orange kayak across a still alpine lake in the Swiss Alps at dawn. Dark pine trees reflect in pale blue water as mist lifts. Slow push-in. No signs, no letters, and no writing anywhere in the frame."
},
"aspect_ratio": {
"title": "Aspect Ratio (W:H)",
"description": "Frame shape of the generated video.",
"type": "string",
"enum": [
"21:9",
"16:9",
"4:3",
"1:1",
"3:4",
"9:16"
],
"default": "16:9"
},
"resolution": {
"title": "Resolution",
"description": "Output size. Every listed size uses the same per-second rate.",
"type": "string",
"enum": [
"480p",
"768p",
"1080p",
"2k"
],
"default": "768p"
},
"duration": {
"title": "Duration",
"description": "Length of the generated video, in whole seconds from 5 to 15.",
"type": "integer",
"enum": [
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15
],
"default": 5
}
}
}{
"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.