rig-a-model SKILL.md skillA
rig-a-model from nirholas/three.ws is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nirholas/three.ws/rig-a-model@git:20260912.bc757afPins git:20260912.bc757af in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nirholas/three.ws
- Path
public/skills/3d-studio/rig-a-model/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260912.bc757af, committed Sep 12, 2026
- Size
- 4,280 bytes
- Repository stars
- 269
- License
- Apache-2.0
Auto-rig a static 3D GLB model into an animation-ready one. Use when you or the user have an existing GLB and want to rig it, add a skeleton, add bones, make it posable, or make it animatable, "rig this model", "add a skeleton to my GLB", "make this character animation-ready". Takes a GLB URL, adds a humanoid skeleton plus skin weights, and returns the rigged GLB URL and a pose-studio link.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Rig a 3D model
Turn a **static GLB** into an **animation-ready** one. The three.ws auto-rig
pipeline (Make-It-Animatable) adds a humanoid skeleton and per-vertex skin weights,
so the model can be posed and play animation clips.
The result is a **`riggedGlbUrl`** plus a **pose-studio link** that opens the
rigged model in the browser, ready to pose.
## When to use which tool
| Goal | Use |
| --- | --- |
| Add a skeleton to a GLB you already have | this skill |
| A new static object / prop from text | `generate-3d-model` |
| A new rigged character from text/image in one call | `create-3d-avatar` |
Rigging assumes a roughly **humanoid figure** (head, torso, two arms, two legs,
standing). Props, furniture, and vehicles won't rig meaningfully.
## Fastest path, the MCP tool
If the three.ws MCP server is connected, call the rig tool directly:
- **Tool:** `rig_mesh`
- **Input:** `{ "glb_url": "<https URL to the static GLB>" }`
- Any reachable GLB URL works, a `glbUrl` from `generate-3d-model`, a CDN
link, or a model you host yourself.
- **Returns:** `riggedGlbUrl`, `sourceGlbUrl`, `poseStudioUrl`, `jobId`,
`creationId`, `durationMs`.
…Read the whole file at its exact version.
How to install
mdr add nirholas/three.ws/rig-a-model@sha256:5bc098183d5da5ffThe line at the top of this page pins the label git:20260912.bc757af, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_3wrp7tq5vrqm3mdz)
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Versions
The registry has recorded 1 version of this file, committed on Sep 12, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4280 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nirholas/three.ws · 269 stars · license Apache-2.0 · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_3wrp7tq5vrqm3mdz GET https://markdownregistry.com/api/v1/resolve?ref=nirholas/three.ws/rig-a-model GET https://markdownregistry.com/api/v1/blob/5bc098183d5da5ffde3facac033d8be3a5aaf7667e4feac5683727be99fa6da8
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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