reference-look-calibration skillA
reference-look-calibration is agent-read markdown (skill) from max-786/claude-3d-harness: Calibrate Blender materials, lighting, camera crop, emission/glow, color management, and aura/HUD styling against supplied original/reference images using measurable color, brightness, saturation, bbox, and mask statistics. Use when a product must match the lighting/look of a source image or when audits say the product is too bright, desaturated, wrong hue, wrong glow, or wrong silhouette extent..
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
# Reference Look Calibration This skill handles the final visual match after geometry and UVs are locked. It must not compensate for wrong shape, wrong UVs, or wrong camera framing. ## Inputs - accepted geometry / UV fit reports; - reference/original image(s); - product preview render(s); - optional mask overlays and multiview fit reports. ## Metrics Use `scripts/look_fit_report.py` to compare: - object/bright-mask IoU and bbox extent; - configured hue-band mask IoU for glow/accent assets; - mean/std HSV and BGR under object mask; - brightness p95 / mean; - saturation mean; - hue drift. ## Calibration order 1. Camera crop / orthographic scale — object extent must match before color tuning. 2. World/background darkness. 3. Base material hue/value/saturation. 4. Emission strength and glow color. 5. Aura/HUD ring color and thickness. 6. Color management / exposure / gamma. 7. Final render overlay and metrics. ## Hard rules - Do not tune lighting before geometry/UV fit gates pass. - Do not change accent/glow hue away from the source reference unless the user explicitly asks. - Do not hide mismatched geometry with bloom, fog, or overexposure. …
Read the whole file at its exact version.
How to install
mdr add max-786/claude-3d-harness/reference-look-calibration@git:20260921.d4bf893mdr add max-786/claude-3d-harness/reference-look-calibration@sha256:a4f026551a547761Pin 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_xi6lxooteafhtcv7)
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Versions
Audit of the latest version
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- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (2205 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_xi6lxooteafhtcv7 GET https://markdownregistry.com/api/v1/resolve?ref=max-786/claude-3d-harness/reference-look-calibration GET https://markdownregistry.com/api/v1/blob/a4f026551a5477615bc44e727b6952302388468076c4a997170be903e5edef17
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