describe SKILL.md skillA
describe from partcad/partcad is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add partcad/partcad/describe@git:20261024.6286b60Pins git:20261024.6286b60 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- partcad/partcad
- Path
ai-agents/common/skills/describe/SKILL.md- Versions recorded
- 5
- Latest version
- git:20261024.6286b60, committed Oct 24, 2026
- First version recorded
- Aug 5, 2026
- Size
- 8,374 bytes
- Repository stars
- 528
- License
- Apache-2.0
Write a narratable, accessibility-oriented text description of an existing PartCAD part, assembly, or sketch from its measured bounding box and volume, from renders taken at several viewing angles, and - where it is available - from a dimensioned technical drawing. Use for /pc:describe or when the user asks to describe, summarize, or caption a PartCAD object. Reproduces the retired built-in AI shape-summary.
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
# pc:describe Produce a text description of an existing PartCAD shape by rendering it and looking at the result — the replacement for PartCAD's retired built-in AI summary. The text after the command (`$ARGUMENTS`) names the object to describe (optionally with its kind). One picture is not enough to describe a shape. A single projection hides everything behind it, and a description written from one is a description of a silhouette. Render **three views** (§3), and where a dimensioned drawing can be had, read the numbers off that rather than estimating them (§4). Nor is any picture enough to give a size. A projection is rendered to fit its frame, so nothing in it says whether the part is 20 mm across or 200 — which is why this starts by asking PartCAD what it measured (§2) and never estimates a dimension a number was available for. ## 1. Resolve the object `$ARGUMENTS` is the object name (a part by default; an assembly or sketch if the user says so). Read its `desc:`/`requirements:` from `partcad.yaml` for context. Make sure PartCAD is available as `/pc:init` describes. Pass `--no-ansi` on every run so the output is plain text; it is a global flag, …
Read the whole file at its exact version.
How to install
mdr add partcad/partcad/describe@sha256:c657fc3bd87d3783The line at the top of this page pins the label git:20261024.6286b60, 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_b3lizg4trmnckifz)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Aug 5, 2026 and Oct 24, 2026, about one every 20 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261024.6286b60 latest | 2026-10-24 | 6286b60 | 8,374 B | A | view · diff |
| git:20261008.9f2d5f9 | 2026-10-08 | 9f2d5f9 | 8,414 B | A | view · diff |
| git:20260920.13cfc89 | 2026-09-20 | 13cfc89 | 8,412 B | A | view · diff |
| git:20260831.e2f48aa | 2026-08-31 | e2f48aa | 5,577 B | A | view · diff |
| git:20260805.ef943a6 | 2026-08-05 | ef943a6 | 2,030 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 (8374 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
partcad/partcad · 528 stars · license Apache-2.0 · pushed 2026-11-08 · branch devel
API
GET https://markdownregistry.com/api/v1/artifacts/art_b3lizg4trmnckifz GET https://markdownregistry.com/api/v1/resolve?ref=partcad/partcad/describe GET https://markdownregistry.com/api/v1/blob/c657fc3bd87d3783f002c21dedd9c1b0a80455b78e7d1770359fd539d302d70d
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.