simplecadapi SKILL.md skillA

simplecadapi from nijingzhe/simplecadapi is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add nijingzhe/simplecadapi/simplecadapi@v2.2.7

Pins v2.2.7 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
nijingzhe/simplecadapi
Path
docs/skill/SKILL.md
Versions recorded
21
Latest version
v2.2.7, committed Oct 30, 2026
First version recorded
Sep 9, 2026
Size
11,833 bytes
Repository stars
178
License
Apache-2.0

Build, assemble, inspect, reconstruct, and export parametric CAD models with the SimpleCADAPI Python SDK. Use for SimpleCAD geometry modeling, constrained sketches, parts and assemblies, standard gears and bearings, STEP/BREP inspection and reconstruction, vector-PDF drawing reconstruction, durable product packages, model JSON replay, and CAD backend translation.

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

# SimpleCAD SDK Skill

This file is the router: it owns load order, route selection, and
execution discipline only. Each selected workflow owns its procedure.
Classify the request, load exactly one workflow, follow its domain and
discipline references, and read exact API pages for the APIs its steps
use.

## Mandatory load order

Paths are relative to this file's directory.

1. Read this file.
2. Select exactly one workflow from Task routing. If two rows
   plausibly match, ask one discriminator question that names the
   candidate outcomes; never pick silently between routes with
   different deliverables.
3. Read the selected workflow in full. From selection on, it owns the
   procedure; do not load another workflow's procedure.
4. Load each required domain/discipline file the workflow names
   before the step that uses it; optional ones only when their
   trigger fires.
5. Before the first call of any API, read its exact page
   (`references/docs/api/<name>.md`, `references/docs/stdlib/<name>.md`,
   `references/docs/core/<type>.md`). A method absent from its page
   does not exist, however plausible it looks.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add nijingzhe/simplecadapi/simplecadapi@sha256:4266e203de688654

The line at the top of this page pins the label v2.2.7, 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.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_4bfaem7kzlacqxau.svg)](https://markdownregistry.com/a/art_4bfaem7kzlacqxau)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 21 versions of this file, between Sep 9, 2026 and Oct 30, 2026, about one every 3 days.

versioncommittedcommitsizeaudit
v2.2.7 latest2026-10-30 2ce6b3f 11,833 BA view · diff
v2.2.7b12026-10-30 8ea87e8 11,837 BA view · diff
v2.2.7b12026-10-27 b626269 11,574 BA view · diff
v2.2.7b12026-10-24 bd36d58 11,462 BA view · diff
v2.2.7b12026-10-23 c9c4cab 11,443 BA view · diff
v2.2.6.post22026-10-20 112c404 11,451 BA view · diff
v2.2.6.post12026-10-20 63704c1 11,451 BA view · diff
v2.2.62026-10-18 47fb649 11,439 BA view · diff
v2.2.52026-10-15 b230356 11,439 BA view · diff
v2.2.42026-10-15 29db768 11,439 BA view · diff
v2.2.42026-10-14 1a46ccb 10,918 BA view · diff
v2.2.32026-10-14 794d9a5 10,918 BA view · diff
v2.3.02026-10-14 f90ae2d 10,918 BA view · diff
v2.2.22026-10-14 3d4e789 10,918 BA view · diff
v2.2.22026-10-13 4a03c47 10,762 BA view · diff
v2.1.32026-10-02 5177f4f 10,171 BA view · diff
v2.1.32026-09-18 1f7d0cb 9,701 BA view · diff
v2.1.3b12026-09-11 9caa2ca 9,705 BA view · diff
v2.1.3b12026-09-10 be93122 9,467 BA view · diff
v2.1.22026-09-10 fc28a62 9,463 BA view · diff
v2.1.22026-09-09 5cac586 9,326 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (11833 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

GitHub

nijingzhe/simplecadapi · 178 stars · license Apache-2.0 · pushed 2026-11-03 · branch master

API

GET https://markdownregistry.com/api/v1/artifacts/art_4bfaem7kzlacqxau
GET https://markdownregistry.com/api/v1/resolve?ref=nijingzhe/simplecadapi/simplecadapi
GET https://markdownregistry.com/api/v1/blob/4266e203de68865488ff8b2da1a33cd34658f6d782a906f71799024b788adb38

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.

More from nijingzhe/simplecadapi

DESIGN.md@examples/compact_two_stage_planetary_reducer DESIGN.md file
nijingzhe/simplecadapi · examples/compact_two_stage_planetary_reducer/DESIGN.md
git:20261002.49f142a · audit A · 178 stars
DESIGN.md@examples/integrated_bldc_joint_actuator DESIGN.md file
nijingzhe/simplecadapi · examples/integrated_bldc_joint_actuator/DESIGN.md
git:20261002.49f142a · audit A · 178 stars

Every file in nijingzhe/simplecadapi

Browse by kind, by grade A, or by owner.