polyhaven-material-swap skillA
polyhaven-material-swap is agent-read markdown (skill) from max-786/claude-3d-harness: 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..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns 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@git:20260921.86ed6eemdr add max-786/claude-3d-harness/polyhaven-material-swap@sha256:882e61228b80fa14Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_egd3wwyguprpaanm)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.86ed6ee latest | 2026-09-21 | 86ed6ee | 4,442 B | A | view · diff |
| git:20260921.655a684 | 2026-09-21 | 655a684 | 1,772 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 (4442 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 · 6 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
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