system-composer SKILL.md skillA
system-composer from matlab/agent-skills-playground is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add matlab/agent-skills-playground/system-composer@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- matlab/agent-skills-playground
- Path
demos/mbse-with-agentic-ai/skills/system-composer/SKILL.md- Versions recorded
- 3
- Latest version
- v1.0, committed Sep 10, 2026
- First version recorded
- May 14, 2026
- Size
- 30,564 bytes
- Repository stars
- 198
- License
- a license file GitHub does not identify
Use this skill when authoring reusable, idempotent MATLAB scripts that build System Composer architecture models via the architecture-modeling API — `systemcomposer.createModel`, `addComponent`, `addPort`, `setInterface`, `connect(srcPort, dstPort)`, interface dictionaries (.sldd) with `addInterface`/`addElement`, profiles/stereotypes with `Profile.createProfile` and `addStereotype`, or `systemcomposer.allocation.createAllocationSet`. Also trigger when debugging these APIs…
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
# MATLAB System Composer — Programmatic Authoring Guide
System Composer lets you model multi-domain architectures in MATLAB. This skill captures the
correct API patterns, common gotchas, and a proven script structure for building models reliably.
---
## When to use this skill vs. `building-simulink-models` (SATK)
Both skills can edit System Composer `.slx` files. They work at **different API layers** — don't mix them in one script.
| Concern | This skill (architecture-modeling API) | `building-simulink-models` with `model_edit` (block-diagram API) |
|---|---|---|
| Component creation | `addComponent(arch, "Name")` — returns `systemcomposer.Component` | `add_block` with `type: "SubSystem"` — returns a `blk_id` |
| Ports | `addPort(arch, "Name", "in", iface)` — typed, interface-aware | Bus Element blocks (`In Bus Element` / `Out Bus Element`) inside the SubSystem |
| Connections | `connect(srcPort, dstPort)` — port objects | `{"op": "connect", "target": "blk_X.y1 -> blk_Y.PortName"}` |
| Interface dictionaries (`.sldd`) | First-class (`createDictionary`, `addInterface`, `setInterface`) | Not addressed |
…Read the whole file at its exact version.
How to install
mdr add matlab/agent-skills-playground/system-composer@sha256:e0e8271d19822230The line at the top of this page pins the label v1.0, 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_ukikbkgfivl3v5hl)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between May 14, 2026 and Sep 10, 2026, about one every 59 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0 latest | 2026-09-10 | 051eea2 | 30,564 B | A | view · diff |
| v1.0 | 2026-05-14 | 4cbe9c7 | 30,529 B | A | view · diff |
| git:20260514.3519e99 | 2026-05-14 | 3519e99 | 30,456 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 (30564 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
matlab/agent-skills-playground · 198 stars · license a license file GitHub does not identify · pushed 2026-10-14 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ukikbkgfivl3v5hl GET https://markdownregistry.com/api/v1/resolve?ref=matlab/agent-skills-playground/system-composer GET https://markdownregistry.com/api/v1/blob/e0e8271d198222305f462b20b373c4f507f6378e6c287008153e622f9c584436
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.