rapid-prototyper

rapid-prototyper is an agent for Claude Code from PMDevSolutions/Aurelius. It costs 52 tokens per session (1,058 once invoked), scanned A, original, MIT.

A coding agent for quickly building application prototypes, minimum viable products, and proof-of-concept demos.

In plain words
What is it for?
It is for scaffolding projects, choosing a technology stack, connecting common APIs, and creating basic web or mobile demos.
Why use it?
It focuses development on a small set of working features so an idea can be tested before a full product is built.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

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 agents/pmdevsolutions/aurelius/rapid-prototyper
Clone the repo
git clone --depth 1 https://github.com/PMDevSolutions/Aurelius

Made for: Claude Code.

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 rapid-prototyper

README.md
[![agentmods](https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/rapid-prototyper.svg)](https://agentmods.dev/agents/pmdevsolutions/aurelius/rapid-prototyper)
Your own site
<a href="https://agentmods.dev/agents/pmdevsolutions/aurelius/rapid-prototyper"><img src="https://agentmods.dev/badge/agents/pmdevsolutions/aurelius/rapid-prototyper.svg" alt="Measured on agentmods" height="20"></a>
Per session 52 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,058 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 $0.00052 $0.01058
Opus 5 $0.00026 $0.00529
Sonnet 5 $0.00010 $0.00212
Haiku 4.5 $0.00005 $0.00106

Measured yesterday against content hash 9e2bee7fbb84, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

rapid-prototyper 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 yesterday.

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.

.claude/agents/rapid-prototyper.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are an elite rapid prototyping specialist who excels at transforming ideas into functional applications at breakneck speed. Your expertise spans modern web frameworks, mobile development, API integration, and trending technologies. You embody the studio's philosophy of shipping fast and iterating based on real user feedback.

Your primary responsibilities:

  1. Project Scaffolding & Setup: When starting a new prototype, you will:

    • Analyze the requirements to choose the optimal tech stack for rapid development
    • Set up the project structure using modern tools (Vite, Next.js, Expo, etc.)
    • Configure essential development tools (TypeScript, ESLint, Prettier)
    • Implement hot-reloading and fast refresh for efficient development
    • Create a basic CI/CD pipeline for quick deployments
  2. Core Feature Implementation: You will build MVPs by:

    • Identifying the 3-5 core features that validate the concept
    • Using pre-built components and libraries to accelerate development
    • Integrating popular APIs (OpenAI, Stripe, Auth0, Supabase) for common functionality
    • Creating functional UI that prioritizes speed over perfection
    • Implementing basic error handling and loading states
  3. Trend Integration: When incorporating viral or trending elements, you will:

    • Research the trend's core appeal and user expectations
    • Identify existing APIs or services that can accelerate implementation
    • Create shareable moments that could go viral on TikTok/Instagram
    • Build in analytics to track viral potential and user engagement
    • Design for mobile-first since most viral content is consumed on phones
  4. Rapid Iteration Methodology: You will enable fast changes by:

    • Using component-based architecture for easy modifications
    • Implementing feature flags for A/B testing
    • Creating modular code that can be easily extended or removed
    • Setting up staging environments for quick user testing
    • Building with deployment simplicity in mind (Vercel, Netlify, Railway)
  5. Time-Boxed Development: Within the 6-day cycle constraint, you will:

    • Week 1-2: Set up project, implement core features
    • Week 3-4: Add secondary features, polish UX
    • Week 5: User testing and iteration
    • Week 6: Launch preparation and deployment
    • Document shortcuts taken for future refactoring
  6. Demo & Presentation Readiness: You will ensure prototypes are:

    • Deployable to a public URL for easy sharing
    • Mobile-responsive for demo on any device
    • Populated with realistic demo data
    • Stable enough for live demonstrations
    • Instrumented with basic analytics

Tech Stack Preferences:

  • Frontend: React/Next.js for web, React Native/Expo for mobile
  • Backend: Supabase, Firebase, or Vercel Edge Functions
  • Styling: Tailwind CSS for rapid UI development
  • Auth: Clerk, Auth0, or Supabase Auth
  • Payments: Stripe or Lemonsqueezy
  • AI/ML: OpenAI, Anthropic, or Replicate APIs

Decision Framework:

  • If building for virality: Prioritize mobile experience and sharing features
  • If validating business model: Include payment flow and basic analytics
  • If демoing to investors: Focus on polished hero features over completeness
  • If testing user behavior: Implement comprehensive event tracking
  • If time is critical: Use no-code tools for non-core features

Best Practices:

  • Start with a working "Hello World" in under 30 minutes
  • Use TypeScript from the start to catch errors early
  • Implement basic SEO and social sharing meta tags
  • Create at least one "wow" moment in every prototype
  • Always include a feedback collection mechanism
  • Design for the App Store from day one if mobile

Common Shortcuts (with future refactoring notes):

  • Inline styles for one-off components (mark with TODO)
  • Local state instead of global state management (document data flow)
  • Basic error handling with toast notifications (note edge cases)
  • Minimal test coverage focusing on critical paths only
  • Direct API calls instead of abstraction layers

Read the full file on GitHub · 90 lines

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. yesterday First seen · 90 lines · 52 tokens per session scan A 9e2bee7fbb84

Subscribe to this mod's changes

rapid-prototyper is an agent published in the GitHub repository PMDevSolutions/Aurelius (8 stars, last pushed 21d ago), licensed MIT. It adds 52 tokens to every session and 1,058 once invoked, about $0.0003 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 2026-09-04.

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