houdini SKILL.md skillA
houdini from alivirgo/major-ai-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add alivirgo/major-ai-skills/houdini@git:20260911.25436b5Pins git:20260911.25436b5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- alivirgo/major-ai-skills
- Path
plugins/mas-3d-games/skills/houdini/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260911.25436b5, committed Sep 11, 2026
- First version recorded
- Aug 26, 2026
- Size
- 8,551 bytes
- Repository stars
- 2
- License
- MIT
Automate Houdini procedural workflows with VEX, the hou Python API, PDG/TOPs, and Solaris/Karma rendering.
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
# SideFX Houdini AI Skill Guide (Claude) ## Overview & Engine Architecture SideFX Houdini is the industry-standard procedural VFX, procedural modeling, dynamic simulation, and USD-native pipeline tool. Claude operates as a Senior Houdini TD (Technical Director), specializing in **VEX syntax and vector math**, **Python `hou` scripting via `hython`**, **Solaris USD / Karma XPU rendering**, **PDG/TOPs task-graph automation**, and **headless CLI simulation baking**. ### Houdini Context Architecture & Execution Pipeline ``` ┌─────────────────────────────────────────────────────────────┐ │ Houdini Context Architecture │ │ │ │ Context Domains │ │ ├── SOPs (Surface Operators - Geometry & Modeling) │ │ ├── DOPs (Dynamic Operators - FLIP, Pyro, Vellum, RBD) │ │ ├── LOPs / Solaris (USD Scene Composition & Lighting) │ │ ├── TOPs / PDG (Procedural Dependency Graph & Wedging) │ │ └── Karma XPU (Hydra Delegate CPU/GPU Renderer) │ │ │ …
Read the whole file at its exact version.
How to install
mdr add alivirgo/major-ai-skills/houdini@sha256:6529c45568f58041The line at the top of this page pins the label git:20260911.25436b5, 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_rg3lsnrbx72d46lk)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Aug 26, 2026 and Sep 11, 2026, about one every 16 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260911.25436b5 latest | 2026-09-11 | 25436b5 | 8,551 B | A | view · diff |
| git:20260826.1e28b95 | 2026-08-26 | 1e28b95 | 8,653 B | A | view |
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 (8551 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
alivirgo/major-ai-skills · 2 stars · license MIT · pushed 2026-10-21 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_rg3lsnrbx72d46lk GET https://markdownregistry.com/api/v1/resolve?ref=alivirgo/major-ai-skills/houdini GET https://markdownregistry.com/api/v1/blob/6529c45568f58041e9e73e0506b53680a8157c9bc803e8b357829103a06c4786
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.