Agent skill

Spec Design

by MagicCube in MagicCube/agentara

Guides interactive module design via Q&A before writing. An agent skill from MagicCube/agentara.

No licenceAuto-check passed

Install Spec Design

skills CLI
$ npx skills add MagicCube/agentara --skill spec-design -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install MagicCube/agentara spec-design --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/MagicCube/agentara.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/spec-design .claude/skills/spec-design && rm -rf skills-src

Use ~/.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/

Facts

Skill name
spec-design
GitHub stars
516
Token cost
~625 tokens
SKILL.md length
267 words
Files
1
Skills in repo
21
Repo updated
First seen
Licence
None found

At a glance

Guides interactive module design via Q&A before writing. An agent skill from MagicCube/agentara.

  • Works in 4 steps: Clarify First (Required) → Question Categories → Iterate → …
  • The user wants to design a module
  • SKILL.md covers Process, Output Format and Anti-Patterns
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Spec Design is an agent skill from MagicCube/agentara. Guides interactive module design via Q&A before writing. Use when the user wants to design a module, class, or feature together, or when they say "/spec-design".

Its SKILL.md is about 630 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Your 24/7 personal assistant powered by Claude Code and OpenAI Codex. Multi-channel messaging, long-term memory, skills, task scheduling, session management, and more — all…

When your agent uses it

  • The user wants to design a module
  • Feature together
  • They say /spec-design

Example prompts

  • “/spec-design”
  • “Use the spec-design skill to guide interactive module design via Q&A before writing. An agent skill from MagicCube/agentara”
  • “/spec-design”

Workflow steps

4 steps, taken from the step headings in SKILL.md.

  1. Clarify First (Required)
  2. Question Categories
  3. Iterate
  4. Produce

What it can do on your machine

Read from SKILL.md and the folder at commit 5621a96. 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 markdown).

    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

Spec Design loads about 625 tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 267 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~43
When it runs · the whole SKILL.md, loaded when a task matches
~625

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 267 words (~625 tokens).

“Guides a collaborative, question-first design process. Do not write design docs until ambiguities are clarified.”

— opening of SKILL.md by MagicCube
name
spec-design

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/spec-design of MagicCube/agentara.

Open the folder on GitHubat commit 5621a96

Compare with similar skills

Spec Design 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.

Spec Design compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Spec Design this skillMagicCube/agentara516—~625Automated safety check: PassNone
Es Modulesthedaviddias/Front-End-Checklist74k—~482Automated safety check: PassMIT
Remotion Interactivityremotion-dev/remotion62k5 repos~4.8kAutomated safety check: PassCustom licence
Firecrawl Interact Integrationfirecrawl/firecrawl190k1 repos~731Automated safety check: PassISC
Splitting Oversized ModulesPostHog/posthog40k—~2.2kAutomated safety check: PassCustom licence
Abp Moduleabpframework/abp14k—~1.6kAutomated safety check: PassLGPL-3.0

Similar skills

  • Es Modules

    thedaviddias/Front-End-Checklist

    A skill your agent uses when reviewing scripts, client components, bundles, or runtime behavior related to Use ES modules (import/export).

    74k GitHub stars~482 tokensUpdated yesterday
    Auto-check passed
  • Remotion Interactivity

    remotion-dev/remotion

    Official

    Structure Remotion markup for interactivity. An agent skill from remotion-dev/remotion.

    62k GitHub starsUsed in 5 repos~4.8k tokens
    Media & CreativeAuto-check passed
  • Guides adding Firecrawl's /interact endpoint to product code for pages that need clicks, forms, pagination or logged-in flows beyond plain scraping.

    190k GitHub starsUsed in 1 repo~731 tokens
    Data & AnalyticsAuto-check passed
  • Official

    Split an oversized Python module (a thousand-plus-line logic.py, models.py, api.py, or its test file) into a package of one module per concern, mechanically and provably without changing behavior.

    40k GitHub stars~2.2k tokensUpdated today
    Frontend & DesignAuto-check passed
  • Abp Module

    abpframework/abp

    ABP reusable Module solution template - EF Core + MongoDB dual support, virtual methods for extensibility, DbTablePrefix, module options pattern, entity extension, separate connection string.

    14k GitHub stars~1.6k tokensUpdated today
    DatabasesAuto-check passed
  • Interaction To Next Paint

    thedaviddias/Front-End-Checklist

    A skill your agent uses when auditing slow page loads, heavy assets, or rendering delays related to Optimize interaction to next paint.

    74k GitHub stars~441 tokensUpdated yesterday
    Frontend & DesignAuto-check passed

More from MagicCube/agentara

All 21 skills in this repo
  • Ecom Shot

    MagicCube/agentara

    Generate Nano Banana Pro (Gemini 3 Pro Image) prompts for e-commerce product photography.

    516 GitHub stars~1.5k tokensUpdated 4 mo ago
    Auto-check passed
  • Video Character Design

    MagicCube/agentara

    Create character design documentation and character design sheet images for video, storyboard, advertising, animation, or AI video-generation workflows.

    516 GitHub starsUsed in 1 repo~3k tokens
    Auto-check passed
  • Video Plan

    MagicCube/agentara

    Plan short-form video, vlog, travel, lifestyle, documentary, or cinematic social video scripts by negotiating duration, choosing a story arc and visual style, then splitting the film into timed…

    516 GitHub starsUsed in 1 repo~2.6k tokens
    Auto-check passed
  • Pulse

    MagicCube/agentara

    📡 Pulse — Twice-daily tech briefing for group distribution.

    516 GitHub stars~2.1k tokensUpdated 4 mo ago
    Auto-check: warnings
  • Video Poster Design

    MagicCube/agentara

    Create cinematic movie poster concepts and final poster images from a user's brief, existing video plan, storyboard, character design, or project context.

    516 GitHub starsUsed in 1 repo~2.5k tokens
    Auto-check passed
  • Lab Interpreter

    MagicCube/agentara

    Interpret medical lab/test reports (blood panels, urine, liver/kidney function, thyroid, tumor markers, coagulation, cardiac enzymes, hormones, etc.) uploaded as images, PDFs, or text.

    516 GitHub starsUsed in 1 repo~2.8k tokens
    Auto-check: warnings

Questions about Spec Design

What does Spec Design do?

Guides interactive module design via Q&A before writing. An agent skill from MagicCube/agentara. Spec Design is an agent skill from MagicCube/agentara. Guides interactive module design via Q&A before writing.

When should I use Spec Design?

Spec Design fits situations like: the user wants to design a module; feature together; they say /spec-design.

How do I install Spec Design in Claude Code?

Run `npx skills add MagicCube/agentara --skill spec-design -a claude-code`. Or copy the skill folder (.claude/skills/spec-design in MagicCube/agentara) into .claude/skills/spec-design in your project. Claude Code loads it when a task matches its description.

How do I install Spec Design in Codex?

Run `npx skills add MagicCube/agentara --skill spec-design -a codex`. Or copy the skill folder (.claude/skills/spec-design in MagicCube/agentara) into .agents/skills/spec-design in your project. Codex loads it when a task matches its description.

Can I use Spec Design 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 MagicCube/agentara --skill spec-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spec-design, .gemini/skills/spec-design, .github/skills/spec-design and .opencode/skills/spec-design in your project.

What does Spec Design need to run?

SKILL.md names no scripts, command-line tools or credentials: Spec Design is instructions for the agent only.

Does Spec Design 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 Spec Design 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 Spec Design use?

No licence was found for Spec Design or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does Spec Design use?

About 625 tokens (SKILL.md is roughly 2.5k 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 Spec Design?

Skills that share tags, products or a category with Spec Design: Es Modules (thedaviddias/Front-End-Checklist, 74k stars), Remotion Interactivity (remotion-dev/remotion, 62k stars), Firecrawl Interact Integration (firecrawl/firecrawl, 190k stars) and Splitting Oversized Modules (PostHog/posthog, 40k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Spec Design?

MagicCube (a GitHub user) maintains it in MagicCube/agentara, which has 516 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on May 11, 2026.

Source: MagicCube/agentara on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.