Vercel Composition Patterns
supabase/supabase
React composition patterns that scale. An agent skill from supabase/supabase.
A skill your agent uses when authoring reusable, idempotent MATLAB scripts that build System Composer architecture models via the architecture-modeling API — systemcomposer.createModel…
Install System Composer
$ npx skills add matlab/agent-skills-playground --skill system-composer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install matlab/agent-skills-playground system-composer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/matlab/agent-skills-playground.git skills-src && mkdir -p .claude/skills && cp -r skills-src/demos/mbse-with-agentic-ai/skills/system-composer .claude/skills/system-composer && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "system-composer" agent skill from https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composer into .claude/skills/system-composer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system-composer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add matlab/agent-skills-playground --skill system-composer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install matlab/agent-skills-playground system-composer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/agent-skills-playground.git skills-src && mkdir -p .agents/skills && cp -r skills-src/demos/mbse-with-agentic-ai/skills/system-composer .agents/skills/system-composer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "system-composer" agent skill from https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composer into .agents/skills/system-composer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system-composer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add matlab/agent-skills-playground --skill system-composer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install matlab/agent-skills-playground system-composer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/agent-skills-playground.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/demos/mbse-with-agentic-ai/skills/system-composer .cursor/skills/system-composer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "system-composer" agent skill from https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composer into .cursor/skills/system-composer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system-composer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/matlab/agent-skills-playground.git --path demos/mbse-with-agentic-ai/skills/system-composer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add matlab/agent-skills-playground --skill system-composer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install matlab/agent-skills-playground system-composer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/agent-skills-playground.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/demos/mbse-with-agentic-ai/skills/system-composer .gemini/skills/system-composer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "system-composer" agent skill from https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composer into .gemini/skills/system-composer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system-composer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install matlab/agent-skills-playground system-composerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add matlab/agent-skills-playground --skill system-composer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/matlab/agent-skills-playground.git skills-src && mkdir -p .github/skills && cp -r skills-src/demos/mbse-with-agentic-ai/skills/system-composer .github/skills/system-composer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "system-composer" agent skill from https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composer into .github/skills/system-composer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system-composer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add matlab/agent-skills-playground --skill system-composer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install matlab/agent-skills-playground system-composer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/matlab/agent-skills-playground.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/demos/mbse-with-agentic-ai/skills/system-composer .opencode/skills/system-composer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "system-composer" agent skill from https://github.com/matlab/agent-skills-playground/tree/main/demos/mbse-with-agentic-ai/skills/system-composer into .opencode/skills/system-composer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "system-composer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
system-composer- GitHub stars
- 181
- Token cost
- ~7.6k tokens
- SKILL.md length
- 2,586 words
- Files
- 9
- Skills in repo
- 29
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
A skill your agent uses when authoring reusable, idempotent MATLAB scripts that build System Composer architecture models via the architecture-modeling API — systemcomposer.createModel…
- Works in 2 steps: +2: Architecture Model + Interface… → Profile & Stereotypes
- Authoring reusable
- SKILL.md covers When to use this skill vs.…, Recommended Script Structure, Phase 1+2: Architecture Model… and Phase 3: Profile & Stereotypes, plus 6 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
System Composer is an agent skill from matlab/agent-skills-playground. 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 (connections that don't appear, interfaces that don't…
Its SKILL.md is about 7.6k tokens, which your agent loads only when the skill is triggered. The skill folder holds 9 other files.
It sits in Development. The repository describes itself as: A sandbox for prototyping and demonstrating Agent Skills for MATLAB and Simulink work.
When your agent uses it
- Authoring reusable
- Idempotent MATLAB scripts that build System Composer architecture models via the architecture-modeling API — systemcomposer.createModel
- Connect(srcPort
- Interface dictionaries (.sldd) with addInterface/addElement
Example prompts
- “t appear, interfaces that don”
- “/system-composer”
Workflow steps
2 steps, taken from the step headings in SKILL.md.
- +2: Architecture Model + Interface Dictionary
- Profile & Stereotypes
What it can do on your machine
Read from SKILL.md and the folder at commit 7b14a77. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are matlab).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
System Composer loads about 7.6k tokens when it runs. Until then it costs about 199 tokens; SKILL.md has 2,586 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 2,586 words (~7,589 tokens).
“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.”
- name
- system-composer
- license
- https://www.mathworks.com/content/dam/mathworks/license/pmrl/license.md
- metadata.author
- MathWorks
- metadata.version
- 1.0
Files
SKILL.md and 8 other files in demos/mbse-with-agentic-ai/skills/system-composer of matlab/agent-skills-playground.
- SKILL.md
- code/addCommonInterfaces.m
- code/buildMySequenceDiagram.m
- code/buildMySystemModel.m
- code/buildMySystemProfile.m
- code/buildMyVariantComposite.m
- code/buildMyViews.m
- code/checkUnconnectedPorts.m
- code/tradeStudy.m
Open the folder on GitHubat commit 7b14a77
Compare with similar skills
System Composer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| System Composer this skillmatlab/agent-skills-playground | 181 | — | ~7.6k | Automated safety check: Pass | Custom licence | |
| Vercel Composition Patternssupabase/supabase | 111k | 59 repos | ~726 | Automated safety check: Pass | MIT | |
| Finishing a Development Branchobra/superpowers | 296k | 5 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Typescript Advanced Typesrolling-scopes/rsschool-app | 10k | 25 repos | ~4.2k | Automated safety check: Pass | MPL-2.0 | |
| PR Babysitteropeninterpreter/openinterpreter | 69k | 3 repos | ~4.2k | Automated safety check: Pass | Apache-2.0 | |
| Code Review ChecklistshareAI-lab/learn-claude-code | 78k | 5 repos | ~1.1k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about System Composer
What does System Composer do?
A skill your agent uses when authoring reusable, idempotent MATLAB scripts that build System Composer architecture models via the architecture-modeling API — systemcomposer.createModel…. System Composer is an agent skill from matlab/agent-skills-playground.createAllocationSet.
When should I use System Composer?
System Composer fits situations like: authoring reusable; idempotent MATLAB scripts that build System Composer architecture models via the architecture-modeling API — systemcomposer.createModel; connect(srcPort; interface dictionaries (.sldd) with addInterface/addElement.
How do I install System Composer in Claude Code?
Run `npx skills add matlab/agent-skills-playground --skill system-composer -a claude-code`. Or copy the skill folder (demos/mbse-with-agentic-ai/skills/system-composer in matlab/agent-skills-playground) into .claude/skills/system-composer in your project. Claude Code loads it when a task matches its description.
How do I install System Composer in Codex?
Run `npx skills add matlab/agent-skills-playground --skill system-composer -a codex`. Or copy the skill folder (demos/mbse-with-agentic-ai/skills/system-composer in matlab/agent-skills-playground) into .agents/skills/system-composer in your project. Codex loads it when a task matches its description.
Can I use System Composer in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add matlab/agent-skills-playground --skill system-composer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/system-composer, .gemini/skills/system-composer, .github/skills/system-composer and .opencode/skills/system-composer in your project.
What does System Composer need to run?
SKILL.md names no scripts, command-line tools or credentials: System Composer is instructions for the agent only.
Does System Composer access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is System Composer safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does System Composer use?
System Composer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does System Composer use?
About 7.6k tokens (SKILL.md is roughly 30k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to System Composer?
Skills that share tags, products or a category with System Composer: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains System Composer?
matlab (a GitHub organization) maintains it in matlab/agent-skills-playground, which has 181 GitHub stars. The repository holds 29 skills in this directory. The repository was last updated on September 10, 2026.
Source: matlab/agent-skills-playground on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.