polyhaven-hdri-showcase skillA
polyhaven-hdri-showcase is agent-read markdown (skill) from max-786/claude-3d-harness: Render the same product across multiple HDRI environments and output a comparison grid. Trigger when asked to compare lighting setups, test different environments, show product in multiple settings, or create an HDRI comparison..
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 HDRI Showcase Renders your product across multiple PolyHaven HDRI environments and saves each as an image — perfect for picking the best lighting for your product shots or creating a showcase grid. > 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 switched Blender's Cycles device preferences for the whole machine > and left the scene lit by whichever HDRI came last. The same steps now go through the MCP server, the preferences > are left alone, and the scene's own World is given back at the end. See `docs/security-review.md`. ## Parameters | Parameter | Description | Default | |-----------|-------------|---------| | `output` | Folder for the rendered images | `<JOB_DIR>/hdri` | | `hdris` | HDRI IDs to compare | the default set of 6 | | `preset` | HDRI set: studios, outdoor, dramatic, all | none | | `resolution` | HDRI resolution: 1k, 2k | `1k` | | `render_width` / `render_height` | Render size | `1920` x `1080` | | `samples` | Render samples | `64` | ## HDRI sets …
Read the whole file at its exact version.
How to install
mdr add max-786/claude-3d-harness/polyhaven-hdri-showcase@git:20260921.86ed6eemdr add max-786/claude-3d-harness/polyhaven-hdri-showcase@sha256:1cfc48622d5a2e95Pin 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_4d7lowh2sledtq3j)
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Versions
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260921.86ed6ee latest | 2026-09-21 | 86ed6ee | 4,351 B | A | view · diff |
| git:20260921.655a684 | 2026-09-21 | 655a684 | 1,407 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 (4351 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_4d7lowh2sledtq3j GET https://markdownregistry.com/api/v1/resolve?ref=max-786/claude-3d-harness/polyhaven-hdri-showcase GET https://markdownregistry.com/api/v1/blob/1cfc48622d5a2e95347a872a0895d25f087e8e7fe19b8330af819b56c3846c06
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