API reference · Tencent

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

Integrate this model through SandBase's unified API, with production-ready schemas and examples.

IMAGEAsyncOpen model

Production endpoint

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OpenAI-compatible endpoint with unified authentication and usage tracking.

POSThttps://api.sandbase.ai/v1/run

Model IDtencent/hunyuan-3d/3.1/smart-topology

Input Schema

4 parameters · 0 required · 4 optional

Parameter	Type	Required	Description
`face_level`	string	Optional	Target polygon density. high: more detail/polygons, medium: balanced, low: fewer polygons. · Options: high, medium, low · Default: "medium" highmediumlow
`polygon_type`	string	Optional	Output polygon type. triangle: triangular faces only. quadrilateral: mixed quad and triangle faces. · Options: triangle, quadrilateral · Default: "triangle" trianglequadrilateral
`input_file_url`	string	Optional	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"
`input_file_type`	string	Optional	Input 3D file format. · Options: glb, obj · Default: "glb" glbobj

Output Schema

Field	Type	Description
`id`	string	Unique identifier for the generation task
`status`	string	Task status: pending, running, completed, failed, timeout
`model`	string	Model used for the generation
`outputs`	array	Array of output items
`outputs[].url`	string	URL of the generated artifact
`outputs[].content_type`	string	MIME type (e.g. image/png, video/mp4)
`error`	object \| null	Error details if failed, null on success
`error.type`	string	Machine-readable error type code
`error.message`	string	Human-readable error description

Async Workflow

This model uses asynchronous execution. Submit a request and poll for the result.

Submit — POST to /v1/run, receive an id
Poll — GET /v1/run/{id} until status is completed, failed, or timeout
Retrieve — Read outputs from the completed response

Code Examples

Ready-to-run snippets

const apiKey = process.env.SANDBASE_API_KEY;
const response = await fetch("https://api.sandbase.ai/v1/run", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "tencent/hunyuan-3d/3.1/smart-topology",
    "face_level": "medium",
    "polygon_type": "triangle",
    "input_file_url": "https://static.sandbase.ai/examples/tencent/hunyuan-3d/3.1/smart-topology/input_input_file_url_0.glb",
    "input_file_type": "glb"
  }),
});

if (!response.ok) throw new Error(await response.text());
let result = await response.json();
for (let attempt = 0; attempt < 120 && !["completed", "failed", "timeout"].includes(result.status); attempt++) {
  await new Promise((resolve) => setTimeout(resolve, 2_000));
  const poll = await fetch(`https://api.sandbase.ai/v1/run/${result.id}`, {
    headers: { Authorization: `Bearer ${apiKey}` },
  });
  if (!poll.ok) throw new Error(await poll.text());
  result = await poll.json();
}
if (result.status !== "completed") throw new Error(`Generation ended: ${result.status}`);
console.log(result);

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