spec-design

spec-design is a skill for Claude Code, Codex from martinstofko219/agentic-design-toolkit. It costs 100 tokens per session (2,190 once invoked), scanned A, original, MIT.

A skill for building Angular web pages with the Nextech Design System, a shared library of UI components and design rules. It turns Figma designs, React prototypes, or written descriptions into accessible Angular code with sample data.

In plain words
What is it for?
Use it to build production-ready pages, sections, and reusable components with Nextech UI components, ready for real data and application logic to be added.
Why use it?
It helps developers translate a visual design into consistent Angular code without guessing which shared components, patterns, or design values to use.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

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 skills/martinstofko219/agentic-design-toolkit/spec-design
Any agent
npx skills add martinstofko219/agentic-design-toolkit --skill spec-design
Clone the repo
git clone --depth 1 https://github.com/martinstofko219/agentic-design-toolkit

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for spec-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/martinstofko219/agentic-design-toolkit/spec-design.svg)](https://agentmods.dev/skills/martinstofko219/agentic-design-toolkit/spec-design)
Your own site
<a href="https://agentmods.dev/skills/martinstofko219/agentic-design-toolkit/spec-design"><img src="https://agentmods.dev/badge/skills/martinstofko219/agentic-design-toolkit/spec-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 100 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,190 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 5.1 $0.00100 $0.02190
Opus 5 $0.00050 $0.01095
Sonnet 5 $0.00020 $0.00438
Haiku 4.5 $0.00010 $0.00219

Measured 5d ago against content hash 07d6482af2de, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

spec-design 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 5d 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.

skills/spec-design/SKILL.md · 133 lines

How it starts

The opening of the file, as written. The whole thing — 133 lines — stays where its author put it; the contents beside it link to each section on GitHub.

spec-design

This skill guides building production-ready Angular UI — pages, sections, and reusable components — using the Nextech Design System (@nextech/ui-components). The output is structured, accessible Angular code with mock data, ready for developers to wire up real API calls and logic.

Design input may come from Figma frames (via the Figma MCP), React prototypes in the workspace, written descriptions, or a combination. The Nextech Design System MCP server is the single source of truth for available components, patterns, and tokens. One invocation typically produces a complete page or a coherent, self-contained section; complex apps are built incrementally, section by section, across multiple invocations.

Session mode: Once invoked, this skill stays active for the rest of the session — apply these guidelines to every subsequent build request without re-invocation. On first load, tell the designer the skill is active and remains so until they say "stop spec-design" or "exit skill mode."


Step 1: Verify Prerequisites

Before doing anything else, confirm the required tools and environment are available.

Nextech Design System MCP — attempt to call getComponentDescriptions(). If it fails or is unavailable, stop and ask the user to install @nextech/design-system-mcp; it is required for every build.

Figma MCP — needed only if the user provides a Figma link. If a Figma URL is present but the MCP is unavailable, ask for screenshots or a written description instead.

Angular workspace — confirm @nextech/ui-components is installed and an Angular app shell is running; if not, ask the user to set one up before proceeding.


Step 2: Understand the Design Input

Gather and synthesize all available design references before writing any code.

If the concept itself is unclear — the problem being solved, who the user is, what the layout or behavior should be — suggest running the design-grill skill before building, regardless of what artifacts are provided: a vague description, a low-fidelity sketch without interaction notes, or a Figma frame that doesn't communicate intent all qualify. Reading the artifacts answers what the concept is; design-grill tests whether it should exist in this form. Ordinary missing detail you can just ask about is not a grill trigger, but production code is the most expensive thing in this pipeline to rework — so the bar here is low: if you can't yet make confident decisions about component structure and behavior, grill first. Suggest once, naming the specific gap: this is a nudge, not a gate — if they'd rather build, build, and state the assumption you're proceeding on.

Read the full file on GitHub · 133 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 5d ago First seen · 133 lines · 100 tokens per session scan A 07d6482af2de

Subscribe to this mod's changes

spec-design is a skill published in the GitHub repository martinstofko219/agentic-design-toolkit (1 stars, last pushed 1mo ago), licensed MIT. It adds 100 tokens to every session and 2,190 once invoked, about $0.0005 per session on Opus 5. 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.

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