claude-3d-harness SKILL.md skillA
claude-3d-harness from max-786/claude-3d-harness is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add max-786/claude-3d-harness/claude-3d-harness@git:20260921.68f0852Pins git:20260921.68f0852 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- max-786/claude-3d-harness
- Path
SKILL.md- Versions recorded
- 4
- Latest version
- git:20260921.2ec21fb, committed Sep 21, 2026
- First version recorded
- Sep 18, 2026
- Size
- 12,833 bytes
- Repository stars
- 9
- License
- MIT
Entry point for every 3D or Blender task - modeling, materials, lighting, cameras, rendering, animation, product shots, environments, cinematic scenes, exports. Classifies the job (fast, standard or cinematic), picks a workflow, asks the harness registry which library skills to load, then drives Blender through the harness's single Blender MCP server with render, inspect and refine checkpoints. Use it whenever the user asks to create, change, light, render, animate or export anything in 3D…
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
# claude-3d-harness
The user's request: $ARGUMENTS
If the request is empty, ask what they want to build before doing anything else.
The 3D skills live in `library/`: five skill libraries by different authors,
kept in this repository, security-reviewed and checksummed. They overlap (two
ship a `blender-lighting`), were written for different MCP servers, and one is
in Italian. The registry settles all of that: one provider per capability, one
MCP server, and a note for every adaptation you need to make. So never browse
`library/` to choose skills yourself. Ask the registry, then read exactly what
it names.
## Where things are
- **Harness root.** Written `H` below. It is `${CLAUDE_PLUGIN_ROOT}`, which
Claude Code fills in when the harness is installed as a plugin. If you see
that placeholder literally instead of a path, you are working in a clone of
the repository, and `H` is the repository root: the folder that holds this
file and `registry/`.
- **Engine.** `uv run "H/scripts/harness.py" <command>` works from any directory.
Paths in its output are relative to `H`, which it prints on the first line.
…Read the whole file at its exact version.
How to install
mdr add max-786/claude-3d-harness/claude-3d-harness@sha256:5452c38d27a4d57cThe line at the top of this page pins the label git:20260921.68f0852, 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_4qkaidthvihpq3xi)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 4 versions of this file, between Sep 18, 2026 and Sep 21, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.2ec21fb latest | 2026-09-21 | 2ec21fb | 12,833 B | A | view · diff |
| git:20260921.68f0852 | 2026-09-21 | 68f0852 | 13,231 B | A | view · diff |
| git:20260920.d3e8a10 | 2026-09-20 | d3e8a10 | 10,712 B | A | view · diff |
| git:20260918.059296f | 2026-09-18 | 059296f | 10,324 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 (12833 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
max-786/claude-3d-harness · 9 stars · license MIT · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4qkaidthvihpq3xi GET https://markdownregistry.com/api/v1/resolve?ref=max-786/claude-3d-harness/claude-3d-harness GET https://markdownregistry.com/api/v1/blob/5452c38d27a4d57c0bddb74d9038b60796a956cab7c2ec914a45cb794282701c
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.