A free tool that turns a text description into a textured, downloadable 3D GLB model. GLB is a common file format for sharing 3D scenes and objects.

Use it to draft a 3D object, prop, mesh, or character from text and load the resulting file in a GLB viewer or Three.js scene.

It removes the cost, wallet setup, and manual modelling work involved in making a first 3D asset from an idea.

forge-3d — Skill for Claude Code by nirholas/three.ws

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add nirholas/three.ws --skill forge-3d

Clone the repo

git clone --depth 1 https://github.com/nirholas/three.ws

Made for: Claude Code.

Or install three-ws-3d, the plugin that ships this one along with the rest of its 4 skills.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/nirholas/three.ws/forge-3d/github.svg)](https://agentmods.dev/skills/nirholas/three.ws/forge-3d)

Your own site

<a href="https://agentmods.dev/skills/nirholas/three.ws/forge-3d"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/forge-3d/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/nirholas/three.ws/forge-3d"><img src="https://agentmods.dev/badge/skills/nirholas/three.ws/forge-3d.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 667 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00101	$0.00667
Opus 5.5	$0.00040	$0.00267
Sonnet 5.5	$0.00020	$0.00133
Haiku 4.5	$0.00010	$0.00067

Measured 1mo ago against content hash bbd2a378ce94, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

forge-3d scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

marketplace/plugins/three-ws-3d/skills/forge-3d/SKILL.md · 44 lines

How it starts

The opening of the file, as written. The whole thing — 44 lines — stays where its author put it; the contents beside it link to each section on GitHub.

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.

Read the full file on GitHub · 44 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

1mo ago First seen · 44 lines · 101 tokens per session scan A bbd2a378ce94

Subscribe to this mod's changes

forge-3d is a skill published in the GitHub repository nirholas/three.ws (246 stars, last pushed today), licensed Apache-2.0. It adds 101 tokens to every session and 667 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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