| name | forge-3d |
| description | Generate a textured 3D GLB model from a text prompt for FREE — no payment, API key, or wallet. Use when you or the user want to make a 3D model, mesh, object, prop, or character from a description, draft a 3D asset, or get a downloadable GLB from text. Covers "make a 3D model of...", "forge a mesh", "text to 3D", "generate a GLB". |
Forge 3D — free text → 3D
Turn a sentence into a textured, downloadable 3D model at zero cost. This is the same free engine the three.ws/forge web page uses for prompt drafts.
Tool
forge_free (three.ws MCP server, @three-ws/mcp-server).
- Lane: FREE. No x402 payment, no API key, no wallet, no
$THREE required.
- Backend: the three.ws
POST /api/forge pipeline on the free NVIDIA NIM lane (Microsoft TRELLIS text→3D preview).
- Mode: text only. NVIDIA's hosted TRELLIS preview does not accept uploaded photos — for image or multi-view → 3D, use the
mesh-forge skill instead.
Inputs
| Param | Required | Notes |
|---|
prompt | yes | 3–1000 chars. Describe one object or character. TRELLIS conditions on ~77 characters, so lead with the subject plus its key materials and colors, e.g. "a friendly round robot mascot, glossy white plastic". |
tier | no | draft (fast, default), standard (balanced), or high (densest mesh). All three are free — higher tiers only cost more time. |
Outputs
The tool returns:
glbUrl — a durable URL to the generated .glb file (download or load directly into any glTF viewer / Three.js scene).viewerUrl — a three.ws viewer link, https://three.ws/viewer?src=<glbUrl>, that renders the model in the browser.- the quality
tier used and the backend that produced it.
How to run
- Read the user's description. Pick
tier (draft unless they ask for higher fidelity).
- Call
forge_free with { prompt, tier }.
- Return the
glbUrl (for download) and the viewerUrl (clickable preview) to the user. Mention the tier used.
- To make the result animation-ready, feed
glbUrl to the auto-rig skill (rig_mesh).
Notes
- One object/character per prompt produces the cleanest mesh. For a full scene of multiple placed objects, use the
scene server's compose_scene instead.
- Free tier is real generation, not a placeholder — generation takes from a few seconds (
draft) up to a couple of minutes (high). Report the wait honestly; never fake progress.
