kernelcad-tubes SKILL.md skillA
kernelcad-tubes from w1ne/kernelcad-web is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add w1ne/kernelcad-web/kernelcad-tubes@git:20261012.2503e83Pins git:20261012.2503e83 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- w1ne/kernelcad-web
- Path
src/agent/skills/kernelcad-tubes/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261012.2503e83, committed Oct 12, 2026
- First version recorded
- Oct 11, 2026
- Size
- 32,429 bytes
- Repository stars
- 33
- License
- MIT
Model bent tubes and fluid lines between ports with tube(name, opts), tubeSpec(rules) and part.port(name), checked for bend radius, straight lengths and clearance, with a bend table per tube. A tube can branch off another tube at a 90 degree tee. Use when routing a rigid tube or line (hydraulic, fuel, coolant, oil, pneumatic) between two fittings, when one line feeds two places, or when asked for a bend radius check or a bend table.
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
# kernelCAD: bent tubes
Route a rigid tube between two ports as straight legs joined by constant-radius bends. You give the corner points; the kernel builds one hollow solid, checks it against the bending and clearance rules, and reports a bend table, cut length and nearest neighbour for every tube.
```typescript
// A hydraulic line from a pump outlet (top face, +Z) to a valve inlet (-X face).
const asm = assembly('line');
const pump = asm.part('pump', box(60, 60, 60), { at: [0, 0, 0] })
.connector('out', { type: 'axis', origin: { kind: 'vec3', value: [30, 30, 60] }, axis: [0, 0, 1], port: { system: 'hydraulic', od: 9.525 } });
const valve = asm.part('valve', box(40, 40, 40), { at: [200, 150, 100] })
.connector('in', { type: 'axis', origin: { kind: 'vec3', value: [0, 20, 20] }, axis: [-1, 0, 0], port: { system: 'hydraulic', od: 9.525 } });
tubeSpec({ clearance: { default: 6 } });
const line = tube('hyd-1', {
from: pump.port('out'), // at [30, 30, 60], axis +Z
to: valve.port('in'), // at [200, 170, 120], axis -X
via: [
[30, 30, 120], // on the pump port axis: straight up from the outlet
…Read the whole file at its exact version.
How to install
mdr add w1ne/kernelcad-web/kernelcad-tubes@sha256:396d2b5c4a4c3cc6The line at the top of this page pins the label git:20261012.2503e83, 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_d5b5fbmtm6r7wqk4)
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Versions
The registry has recorded 5 versions of this file, between Oct 11, 2026 and Oct 12, 2026, more than one a day.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261012.2503e83 latest | 2026-10-12 | 2503e83 | 32,429 B | A | view · diff |
| git:20261011.15b52e8 | 2026-10-11 | 15b52e8 | 31,984 B | A | view · diff |
| git:20261011.71e8288 | 2026-10-11 | 71e8288 | 31,877 B | A | view · diff |
| git:20261011.250dcde | 2026-10-11 | 250dcde | 31,747 B | A | view · diff |
| git:20261011.8de0868 | 2026-10-11 | 8de0868 | 31,598 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 (32429 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
w1ne/kernelcad-web · 33 stars · license MIT · pushed 2026-10-21 · branch develop
API
GET https://markdownregistry.com/api/v1/artifacts/art_d5b5fbmtm6r7wqk4 GET https://markdownregistry.com/api/v1/resolve?ref=w1ne/kernelcad-web/kernelcad-tubes GET https://markdownregistry.com/api/v1/blob/396d2b5c4a4c3cc61630f2197aeb662730641a5550ba81bf46b7abfdd21d8b6c
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.