new-app

new-app is a skill for Claude Code from jerpint/woltspace. It costs 34 tokens per session (1,425 once invoked), scanned A, original, MIT.

A setup process for starting a new app from scratch, including its project directory, configuration file, and development server.

In plain words
What is it for?
Use it when a fresh app, tool, or service needs to be scaffolded and started, after confirming that an app is the right choice.
Why use it?
It provides the basic structure needed for an app with its own server or dependencies rather than an informal collection of files.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the woltspace plugin — 23 skills shipped together

Good fit Use it when a fresh app, tool, or service needs to be scaffolded and started, after confirming that an app is the right choice.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/jerpint/woltspace/new-app
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 jerpint/woltspace --skill new-app
Clone the repo
git clone --depth 1 https://github.com/jerpint/woltspace

Made for: Claude Code.

Or install woltspace, the plugin that ships this one along with the rest of its 23 skills.

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 new-app

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/jerpint/woltspace/new-app"><img src="https://agentmods.dev/badge/skills/jerpint/woltspace/new-app.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,425 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00034 $0.01425
Opus 5.5 $0.00014 $0.00570
Sonnet 5.5 $0.00007 $0.00285
Haiku 4.5 $0.00003 $0.00143

Measured 28d ago against content hash 884b7d9cbcaa, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

new-app scanned grade A with 1 finding 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 28d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s http://localhost:{port}/ | head -20
container/skills/new-app/SKILL.md · 140 lines

How it starts

The opening of the file, as written. The whole thing — 140 lines — stays where its author put it; the contents beside it link to each section on GitHub.

New App Setup

An app is something you ship — an app, a tool, a service. It has its own server, dependencies, and manifest. It can be public. Apps live at wolts/apps/{name}/ and are served at /app/{name}/.

Apps are an escalation, not a default. Wolts should start with their site (wolt/site/) for lightweight work. Only create an app when the work needs its own server, dependencies, or is meant to be shared. Always confirm with the user before creating an app.

1. Confirm with the user

Before creating an app, make sure they want one:

"This sounds like it needs its own server/deps — want me to set it up as an app? Or keep it simple in your site for now?"

2. Create the directory

Apps live in the global apps directory (shared across all wolts):

mkdir -p /workspace/wolts/apps/{name}
cd /workspace/wolts/apps/{name}

3. Scaffold it

Based on the user's request, figure out stack and scaffold:

Simple HTML page:

# Just write the files — no deps needed

Vite + React/Vue/Svelte:

npm create vite@latest . -- --template react  # or vue, svelte
npm install

Python + FastAPI:

uv init . && uv add fastapi uvicorn

Astro blog/site:

npm create astro@latest . -- --template blog

Clone a repo:

git clone <url> .
# Read the README, figure out deps, install them

4. Write woltspace.json

This is required — the platform only discovers apps that have woltspace.json. Without it, the app is invisible.

{
  "name": "{name}",
  "description": "What this app does",
  "stack": "node",
  "port": 4010,
  "install": "npm install",
  "start": "node server.js --port $PORT --host 0.0.0.0",
  "keeper": "{your-wolt-name}",
  "emoji": "🦊",
  "public": false
}

Fields

Field Required Description
name yes App name (matches directory name, globally unique)
keeper yes Your wolt name — who owns this app
description no What the app does
stack no Tech stack: python, vite, node, html
install no Install command (e.g. npm install, uv sync)
port yes Fixed port for this app (use 4000-5999 range). Pick one, it's yours permanently. Avoid 7777 (platform) and 3001 (TUI). Sites use 6000+ so no collisions.
start no Start command. Use $PORT — the platform expands it. Add --host 0.0.0.0 for network access. Null = app can't be started from the lodge.
source no Origin URL if cloned/forked
emoji no Display emoji (auto-assigned if omitted)
public no If true, the app is shared publicly when started. With a named tunnel: served at {name}.{domain} (e.g. corework.woltspace.com). Without: a random quick tunnel URL. Default: false.

Read the full file on GitHub · 140 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. 28d ago Changed · +2 lines 884b7d9cbcaa
  2. 2mo ago First seen · 138 lines · 34 tokens per session scan A 97b6597e6d89

Subscribe to this mod's changes

new-app is a skill published in the GitHub repository jerpint/woltspace (22 stars, last pushed today), licensed MIT. It adds 34 tokens to every session and 1,425 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-09.

Related

new-app compared with skills from other repositories

new-app next to 6 skills from other repositories
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