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.
npx skills add maquina-app/rails-claude-code --skill mvp-creatorgit clone --depth 1 https://github.com/maquina-app/rails-claude-codeWrote 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.
[](https://agentmods.dev/skills/maquina-app/rails-claude-code/mvp-creator)<a href="https://agentmods.dev/skills/maquina-app/rails-claude-code/mvp-creator"><img src="https://agentmods.dev/badge/skills/maquina-app/rails-claude-code/mvp-creator/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/maquina-app/rails-claude-code/mvp-creator"><img src="https://agentmods.dev/badge/skills/maquina-app/rails-claude-code/mvp-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00126 | $0.02423 |
| Opus 5 | $0.00063 | $0.01211 |
| Sonnet 5 | $0.00025 | $0.00485 |
| Haiku 4.5 | $0.00013 | $0.00242 |
Grade A, and why
mvp-creator 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.
MVP Creator
Create comprehensive MVP documentation for Rails applications through guided research and discovery.
Overview
This skill produces 5 deliverables for a new Rails application:
- Research Report — Competitor analysis, market overview, feature comparison
- MVP Business Plan — Vision, features, user flows, success metrics
- Brand Guide — Logo, colors, typography, components, voice
- Technical Guide — Architecture, patterns, data models, code style
- Claude Setup — CLAUDE.md, .mcp.json, commands for Claude Desktop/Code
Workflow
Topic/Idea → Research → Discovery Questions → Generate Deliverables → Handoff to SDD
Phase 1: Research
When user provides a topic or app idea:
- Conduct web search for 2-5 similar apps/competitors
- Research business models, features, pricing
- Identify market gaps and opportunities
- Present findings and ask for feedback before proceeding
Output: Research Report (saved to docs/RESEARCH_REPORT.md)
Phase 2: Discovery Questions
After research is approved, gather project-specific information using the templates in the Discovery Question Templates section below. Do not re-list the questions here — go directly to the templates.
Ask the Core Questions first. Ask Feature Questions after research review. Ask Brand Questions just before generating the Brand Guide.
Phase 3: Generate Deliverables
Generate each deliverable sequentially. Before presenting any deliverable, run its checklist from the Quality Checklist section below. Get approval before moving to the next.
- MVP Business Plan →
docs/MVP_BUSINESS_PLAN.md- Template: mvp-business-plan.md
- Brand Guide →
docs/BRAND_GUIDE.md(with logo SVGs generated inline — see Logo Generation below)- Template: brand-guide.md
- Reference: rails-ui-patterns.md
- Use
frontend-designskill only for UI screen mockups, not for the brand guide itself
- Technical Guide →
docs/TECHNICAL_GUIDE.md- Template: technical-guide.md
- References: rails-philosophy.md, rails-implementation-patterns.md
- If the app requires a JSON API (mobile app, external integrations): also load rails-api-patterns.md
- Claude Setup →
CLAUDE.md,.mcp.json,.claudeignore,.claude/commands/- Template: claude-setup.md
What ships with it
10 files 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.
- references/deliverable-templates/brand-guide.md 8.3 KB
- references/deliverable-templates/claude-setup.md 9.1 KB
- references/deliverable-templates/mvp-business-plan.md 5.1 KB
- references/deliverable-templates/research-report.md 2.6 KB
- references/deliverable-templates/technical-guide.md 12 KB
- references/rails-api-patterns.md 19 KB
- references/rails-implementation-patterns.md 14 KB
- references/rails-philosophy.md 8.9 KB
- references/rails-ui-patterns.md 13 KB
- scripts/init.sh 539 B runs code
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.
- 9d ago First seen · 298 lines · 126 tokens per session scan A a1dba6bf97fe
mvp-creator is a skill published in the GitHub repository maquina-app/rails-claude-code (47 stars, last pushed 24d ago), licensed MIT. It adds 126 tokens to every session and 2,423 once invoked, about $0.0006 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 2026-08-30.
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