app-builder

app-builder is a skill for Claude Code, Codex from phuonghx/aim-cli. It costs 73 tokens per session (1,019 once invoked), scanned A, original, MIT.

A guide for turning a plain-language app idea into a full-stack project, including its technology choices, folder structure, and work plan.

In plain words
What is it for?
Use it to start a new app, choose frameworks, create the initial project files, or divide the build among specialist agents.
Why use it?
It removes the need to decide how to start a new application and which technologies fit the request.

Skill for Claude CodeCodex

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

Good fit Use it to start a new app, choose frameworks, create the initial project files, or divide the build among specialist agents.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/phuonghx/aim-cli/app-builder
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.

Any agent
npx skills add phuonghx/aim-cli --skill app-builder
Clone the repo
git clone --depth 1 https://github.com/phuonghx/aim-cli

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 app-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/phuonghx/aim-cli/app-builder/github.svg)](https://agentmods.dev/skills/phuonghx/aim-cli/app-builder)
Your own site
<a href="https://agentmods.dev/skills/phuonghx/aim-cli/app-builder"><img src="https://agentmods.dev/badge/skills/phuonghx/aim-cli/app-builder/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.

agentmods 80×15 button for app-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/phuonghx/aim-cli/app-builder"><img src="https://agentmods.dev/badge/skills/phuonghx/aim-cli/app-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,019 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00073 $0.01019
Opus 5.5 $0.00029 $0.00408
Sonnet 5.5 $0.00015 $0.00204
Haiku 4.5 $0.00007 $0.00102

Measured 1mo ago against content hash d10b96d9a8f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

app-builder 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 1mo 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.

aim/templates/aim-agents/skills/app-builder/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

App Builder

Orchestrates new-application work end to end: it reads what the user wants, settles on a stack, sketches the file layout, and delegates the build to specialist agents.

Read Only What You Need

Do not load every file in this folder. Consult the map below, open the one or two pages that match the task at hand, and skip the rest.

File What it covers Open it when
project-detection.md Mapping request wording to a project type Kicking off a new build
tech-stack.md Recommended stack plus swap-in options Settling on technologies
agent-coordination.md The agent pipeline and the order they run Running multi-agent work
scaffolding.md Folder layout and the files that anchor it Generating the project skeleton
feature-building.md Scoping changes, recovering from errors Extending a project that already exists
templates/SKILL.md The full template catalog Scaffolding from a starter

Starter Templates (13)

Each template is a ready-made starting point for one kind of project. Open the single template that fits; do not read them all.

Template Stack Best for
nextjs-fullstack Next.js + Prisma Full-stack web app
nextjs-saas Next.js + Stripe Subscription product
nextjs-static Next.js + Framer Motion Marketing / landing page
nuxt-app Nuxt 4 + Pinia Vue full-stack app
express-api Express + JWT REST backend
python-fastapi FastAPI Python backend
react-native-app Expo + Zustand Mobile app
flutter-app Flutter + Riverpod Cross-platform mobile
electron-desktop Electron + React Desktop app
chrome-extension Chrome MV3 Browser extension
cli-tool Node.js + Commander Command-line tool
monorepo-turborepo Turborepo + pnpm Multi-package repo
astro-static Astro + MDX Blog / docs site

Read the full file on GitHub · 88 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. 1mo ago First seen · 88 lines · 73 tokens per session scan A d10b96d9a8f0

Subscribe to this mod's changes

app-builder is a skill published in the GitHub repository phuonghx/aim-cli (1 stars, last pushed 3mo ago), licensed MIT. It adds 73 tokens to every session and 1,019 once invoked, about $0.0003 per session on Opus 5.5. 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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