design-system

A command for creating and checking a design token layer: named values for interface details such as colors. It can also show the component catalogue and audit whether components use those tokens.

In plain words
What is it for?
Use it to initialize tokens, add values such as a primary color, inspect components, and check token usage.
Why use it?
It helps prevent scattered, hardcoded visual values that make an interface inconsistent and difficult to update.

Command

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add commands/benrben/mpga/design-system
Clone the repo
git clone --depth 1 https://github.com/benrben/MPGA
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 117 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00117
Opus 5 $0.00000 $0.00059
Sonnet 5 $0.00000 $0.00023
Haiku 4.5 $0.00000 $0.00012

Measured 2d ago against content hash 17b35d0506ee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

design-system scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

mpga-plugin/commands/design-system.md · 21 lines

What it actually says

/mpga:design-system

Build or audit the design token layer. No hardcoded visual chaos.

Steps

  1. Initialize tokens: mpga design-system init
  2. Add a token: mpga design-system add-token --name primary --value "#2563eb" --category color
  3. Inspect the component catalog: mpga design-system catalog
  4. Audit token compliance: mpga design-system audit

Usage

/mpga:design-system init
/mpga:design-system audit
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 21 lines · 0 tokens per session scan A 17b35d0506ee

Subscribe to this mod's changes

design-system is a command published in the GitHub repository benrben/MPGA (5 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 117 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.