Hunyuan 3D Smart Topology

POST/v1/run

Hunyuan 3d 3.1 Smart Topology by Tencent - advanced AI model for 3d-to-3d. Delivers high-quality results with fast inference, suitable for both creative and production workflows.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to tencent/hunyuan-3d/3.1/smart-topology.

Default: tencent/hunyuan-3d/3.1/smart-topology

Optional<string>input_file_type

Input 3D file format.

Allowed values: glb, obj

Default: glb

Optional<string>input_file_url

URL of GLB or OBJ file to optimize topology. Max size: 200MB.

Default: https://static.sandbase.ai/examples/tencent/hunyuan-3d/3.1/smart-topology/input_input_file_url_0.glb

Optional<string>polygon_type

Output polygon type. triangle: triangular faces only. quadrilateral: mixed quad and triangle faces.

Allowed values: triangle, quadrilateral

Default: triangle

Optional<string>face_level

Target polygon density. high: more detail/polygons, medium: balanced, low: fewer polygons.

Allowed values: high, medium, low

Default: medium

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

Allowed values: pending, running, completed, failed, timeout

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: 3d-to-3d

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "tencent/hunyuan-3d/3.1/smart-topology"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/f3d2e8a1-7c4b-4a12-9d2e-123456789abc \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "f3d2e8a1-7c4b-4a12-9d2e-123456789abc",
  "model": "tencent/hunyuan-3d/3.1/smart-topology",
  "status": "running"
}