Use RunComfy's API to run heygen/avatar-v/text-to-video. For accepted inputs and outputs, see the model's schema.
curl --request POST \
--url https://model-api.runcomfy.net/v1/models/heygen/avatar-v/text-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"avatar_id": "Elise",
"voice_id": "Match look",
"script": "Good morning. The harbor market opens in ten minutes, and the first crates of peaches are already on the tables."
}'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/heygen/avatar-v/text-to-video \
--header "Content-Type: application/json" \
--header "Authorization: Bearer <token>" \
--data '{
"avatar_id": "Elise",
"voice_id": "Match look",
"script": "Good morning. The harbor market opens in ten minutes, and the first crates of peaches are already on the tables."
}'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": [
"avatar_id",
"voice_id",
"script"
],
"properties": {
"avatar_id": {
"title": "Avatar",
"description": "Public look that appears on camera. Each option accepts this rendering engine.",
"type": "string",
"enum": [
"Elise",
"Dante Office 2",
"Genevieve Office 3",
"Brody Living Room 2",
"Elodie Kitchen 9",
"Julian Office 8",
"Camille",
"Sebastian Office 11"
],
"default": "Elise"
},
"voice_id": {
"title": "Voice",
"description": "Voice that speaks the script. Match look uses the voice paired with the selected person.",
"type": "string",
"enum": [
"Match look",
"Nadine - Calm & Gentle",
"Vincent - Thoughtful & Clear",
"Jonah - Clear & Professional",
"Elowen - Warm & Soothing",
"Hugh - Firm & Measured",
"Cecily - Warm & Friendly",
"Lucian - Conversational & Easygoing",
"Noelle - Warm & Soothing"
],
"default": "Match look"
},
"script": {
"title": "Script",
"description": "Words to speak. Clip length follows this text.",
"type": "string",
"maxLength": 5000,
"default": "Good morning. The harbor market opens in ten minutes, and the first crates of peaches are already on the tables."
},
"resolution": {
"title": "Resolution",
"description": "Frame size. 720p and 1080p use the same per-second rate.",
"type": "string",
"enum": [
"720p",
"1080p"
],
"default": "1080p"
},
"motion_prompt": {
"title": "Motion Prompt",
"description": "Optional note for a nod, a gesture, or calmer hands. Leave empty to let the script lead.",
"type": "string",
"default": "A small nod, then one open hand toward the camera."
}
}
}{
"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.