alice-implicit-cad SKILL.md skillA
alice-implicit-cad from ext-sakamoro/alice-sdf is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ext-sakamoro/alice-sdf/alice-implicit-cad@git:20261105.491deb2Pins git:20261105.491deb2 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ext-sakamoro/alice-sdf
- Path
skills/implicit-cad/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261105.491deb2, committed Nov 5, 2026
- First version recorded
- Jul 27, 2026
- Size
- 8,299 bytes
- Repository stars
- 13
- License
- a license file GitHub does not identify
Create implicit CAD models via ALICE-SDF's 132-construct Signed Distance Function library (74 primitives, 25 CSG ops, 8 transforms, 25 modifiers). Supports 7 evaluation modes (interpret / VM / SIMD 8-wide / BVH / SoA / JIT / GPU), GLSL/WGSL/HLSL shader transpile for Unity/UE5/UE6/Godot/WebGPU/VRChat, and mesh export to GLB/OBJ/STL/PLY/3MF/FBX/USD/Nanite. Prefer this skill for SDF field composition, raymarching, high-primitive-count implicit models, and shader-native workflows. For LLM…
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
# ALICE Implicit CAD (SDF-based) Provenance: maintained in [ext-sakamoro/ALICE-SDF](https://github.com/ext-sakamoro/ALICE-SDF). This skill is a thin wrapper — install the parent `alice-sdf` crate (`cargo add alice-sdf`) or clone the repo for full runtime. ## Purpose Author 3D geometry as **Signed Distance Functions** (SDF) — mathematical field definitions — rather than polygon meshes or parametric CAD. Emit browser/engine-native shaders (GLSL / WGSL / HLSL) or extract meshes via Marching Cubes / Dual Contouring / V-HACD for downstream tooling. ## When to use this skill Use this skill when the task calls for: - **SDF field composition** — smooth booleans, TPMS gyroid/schwarz/diamond/neovius, distance-field modifiers, procedural CSG - **Raymarch-native output** — GLSL / WGSL / HLSL emitted directly for browser or engine (WebGPU / Vulkan / DirectX / OpenGL) - **Engine integration** — Unity / Unreal Engine 5-6 / Godot / VRChat / WebAssembly bindings - **High-primitive-count implicit models** where mesh export is a secondary artifact - **Compression-first delivery** — SDF tree JSON is 10-1000x smaller than equivalent polygon mesh …
Read the whole file at its exact version.
How to install
mdr add ext-sakamoro/alice-sdf/alice-implicit-cad@sha256:ff80f4af2e84edf4The line at the top of this page pins the label git:20261105.491deb2, 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_2v4sbgzgls5xxj6f)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Jul 27, 2026 and Nov 5, 2026, about one every 51 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261105.491deb2 latest | 2026-11-05 | 491deb2 | 8,299 B | A | view · diff |
| git:20261006.b650bf2 | 2026-10-06 | b650bf2 | 8,299 B | A | view · diff |
| git:20260727.1861d23 | 2026-07-27 | 1861d23 | 8,299 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 (8299 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
ext-sakamoro/alice-sdf · 13 stars · license a license file GitHub does not identify · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_2v4sbgzgls5xxj6f GET https://markdownregistry.com/api/v1/resolve?ref=ext-sakamoro/alice-sdf/alice-implicit-cad GET https://markdownregistry.com/api/v1/blob/ff80f4af2e84edf4170d0f1405950adbf18d4a1c8fbe5c1b52428e0a0bc80eb7
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.