polyhaven-material-swap SKILL.md skillA
polyhaven-material-swap 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/polyhaven-material-swap@git:20260921.86ed6eePins git:20260921.86ed6ee 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
library/kb/polyhaven-material-swap/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260921.655a684, committed Sep 21, 2026
- First version recorded
- Sep 21, 2026
- Size
- 1,772 bytes
- Repository stars
- 9
- License
- MIT
Cycle through multiple PolyHaven materials on a product and render each variant. Great for showing color/finish options. Trigger when asked to show material variants, swap textures, create color options, show finish comparisons, or render product in different materials.
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
# PolyHaven Material Swap Applies multiple PolyHaven PBR textures to the same object one by one and renders each — perfect for showing product finish variants (matte black, glossy white, brushed metal, marble, etc.). > Adapted for claude-3d-harness. The original ran a bundled Node script that opened Blender's add-on socket itself and > sent it Python built from command-line text; it also switched Blender's Cycles device preferences for the whole > machine. The same steps now go through the MCP server, and the preferences are left alone. See > `docs/security-review.md`. ## Parameters | Parameter | Description | Default | |-----------|-------------|---------| | `object` | Blender object name | **required** | | `textures` | PolyHaven texture IDs | **required** (or use a preset) | | `output` | Folder for the rendered images | `<JOB_DIR>/variants` | | `preset` | Texture set: metals, woods, stones, fabrics | none | | `resolution` | Texture resolution: 1k, 2k | `2k` | | `render_width` / `render_height` | Render size | `1920` x `1080` | | `samples` | Render samples | `64` | ## Presets - **metals** — brushed_metal, rusty_metal, painted_metal_02, corrugated_iron …
Read the whole file at its exact version.
How to install
mdr add max-786/claude-3d-harness/polyhaven-material-swap@sha256:882e61228b80fa14The line at the top of this page pins the label git:20260921.86ed6ee, 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_egd3wwyguprpaanm)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Sep 21, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.655a684 latest | 2026-09-21 | 655a684 | 1,772 B | A | view · diff |
| git:20260921.86ed6ee | 2026-09-21 | 86ed6ee | 4,442 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 (1772 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_egd3wwyguprpaanm GET https://markdownregistry.com/api/v1/resolve?ref=max-786/claude-3d-harness/polyhaven-material-swap GET https://markdownregistry.com/api/v1/blob/882e61228b80fa14ad1a82af5814ea8acb0693240ad21f6cf699dea0880f6a00
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.