# AI3D API v2 model: anigen-mixamo-retarget

Retarget Mixamo-compatible biped motion clips onto an AniGen-rigged GLB.

- AI3D model ID: `anigen-mixamo-retarget`
- Provider: AI3D local Blender operation
- Price: $0.01 per selected clip; check `GET /v2/billing/prices` for the exact reservation.
- Output: a rigged GLB artifact named `anigen-mixamo.glb`, with one named glTF animation per selected clip.

## Animation library

Call authenticated `GET /v2/anigen/animations` to list stable animation IDs. The library contains 23 Mixamo-compatible FBX clips. At most eight clips may be applied in one job. If `input.animations` is omitted, AI3D applies `idle`, `walking`, `running`, and `jump`.

## Source and request

The archived source GLB must embed all buffers and images. External file paths and URLs inside the GLB are rejected before Blender runs.

The source must be your own completed v2 job from `anigen` or `anigen-weight-transfer`, with an archived rigged GLB. All source jobs must belong to the caller's account.

```json
{
  "model": "anigen-mixamo-retarget",
  "source_job_id": "<your completed AniGen or weight-transfer job UUID>",
  "input": {
    "animations": ["idle", "walking", "running", "jump"]
  }
}
```

`animations` must contain 1–8 unique IDs returned by the animation-library endpoint. Do not pass `model_url`; retargeting accepts an owned rigged source job only.

The worker maps the Mixamo biped's hips, spine, head, arms, and legs to AniGen's 24-joint skeleton, samples each source action, scales root motion to the target skeleton, and exports the original model with named animation clips. The target must be an AniGen-compatible biped rig. Retarget quality depends on skeleton proportions and source clip conventions.

## Lifecycle

The request returns `202 Accepted` with a normal job ID. Poll `GET /v2/jobs/{id}` until it succeeds or fails. Download the result from its authenticated `artifacts[].download_url`. This uses AI3D's local Blender runtime and the private Mixamo-compatible clip library; it does not call AniGen or Tripo.