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Swap faces in a video using AI via the HeyGen API.
Passed 20 of 22 test cases with the skill, and 9 of 22 without it.
and 14 more in the full report
11 fixed9 passed either way2 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 11 test cases the skill fixed. Same model, same prompt, with and without the skill.
Once a HeyGen face swap workflow status changes to completed, what JSON path in the response contains the direct link to the resulting video?
| Checked | Without skill | With skill |
|---|---|---|
| The response identifies data.output.video_url as the path to the completed video URL. | Missed | Passed |
The instructions your model reads when the skill loads.
Swap a face from a source image into a target video using GPU-accelerated AI processing. The source image provides the face to swap in, and the target video receives the new face.
All requests require the X-Api-Key header. Set the HEYGEN_API_KEY environment variable.
curl -X POST "https://api.heygen.com/v1/workflows/executions" \
-H "X-Api-Key: $HEYGEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{"workflow_type": "FaceswapNode", "input": {"source_image_url": "https://example.com/face.jpg", "target_video_url": "https://example.com/video.mp4"}}'
POST /v1/workflows/executions with workflow_type: "FaceswapNode", a source face image, and a target videoexecution_id in the responseGET /v1/workflows/executions/{id} every 10 seconds until status is completedvideo_url from the outputPOST https://api.heygen.com/v1/workflows/executions
| Field | Type | Req | Description |
|---|---|---|---|
workflow_type | string | Y | Must be "FaceswapNode" |
input.source_image_url | string | Y | URL of the face image to swap in |
input.target_video_url | string | Y | URL of the video to apply the face swap to |
curl -X POST "https://api.heygen.com/v1/workflows/executions" \
test cases passed, vs 9 / 22 without
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