What is build-muhkoo-app?

A skill for building complete applications on the Muhkoo platform from a plain-language idea. Muhkoo provides application services such as authentication, databases, encrypted realtime channels, file storage, AI agents, serverless functions, and hosting.

Designing data models, provisioning Muhkoo resources, and scaffolding either a full Vite and React client or a lightweight client using the Muhkoo connection library.

It covers both designing the application's backend and creating a working client, so the developer does not have to assemble those pieces manually.

build-muhkoo-app — Skill for Claude Code by muhkoo

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 muhkoo/builder --skill build-muhkoo-app

Clone the repo

git clone --depth 1 https://github.com/muhkoo/builder

Made for: Claude Code.

Or install muhkoo-app-builder, the plugin that ships this one along with the rest of its 1 skill.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/muhkoo/builder/build-muhkoo-app/github.svg)](https://agentmods.dev/skills/muhkoo/builder/build-muhkoo-app)

Your own site

<a href="https://agentmods.dev/skills/muhkoo/builder/build-muhkoo-app"><img src="https://agentmods.dev/badge/skills/muhkoo/builder/build-muhkoo-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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/muhkoo/builder/build-muhkoo-app"><img src="https://agentmods.dev/badge/skills/muhkoo/builder/build-muhkoo-app.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 125 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,882 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.

Model	Per session	Once invoked
Fable 5.1	$0.00125	$0.03882
Opus 5	$0.00063	$0.01941
Sonnet 5	$0.00025	$0.00776
Haiku 4.5	$0.00013	$0.00388

Measured 8d ago against content hash 5e3c0928c9ef, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

build-muhkoo-app 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 8d ago.

The scan reads SKILL.md. This mod also ships 17 executable files (scripts/extract-scaffold.mjs, templates/starter-app/cypress.config.ts, templates/starter-app/cypress/e2e/01-auth.cy.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/build-muhkoo-app/SKILL.md · 281 lines

How it starts

The opening of the file, as written. The whole thing — 281 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Build a Muhkoo app

Turn an app idea into a working application on Muhkoo: design it, provision the backend, and scaffold a real client. The bundled references/, scripts/, and templates/ in this skill's directory are your toolkit — read the reference files as you go, don't work from memory.

Files referenced below (references/…, scripts/…, templates/…) are relative to this skill's directory. Resolve that directory once (it's where this SKILL.md lives) and use absolute paths when running scripts.

What Muhkoo gives an app

ZK auth · a scalable database (client.db) · E2E-encrypted realtime channels (client.space) · per-user KV + file storage · AI agents that can act on the app · serverless functions · hosting — every app gets a DNS subdomain https://<slug>.apps.muhkoo.dev and can be deployed there (step 7). The SDK is @muhkoo/connect. Full surface: references/platform.md.

Choosing a template

Before designing, pick the template that fits the idea — they share the same provisioning + hosting machinery, only the client differs:

templates/starter-app (default) — a full Vite + React + @muhkoo/connect app with ZK auth, database, channels, agents. Use when users log in or the app has per-user data, realtime, or AI.
templates/static-site — a lightweight statically-hosted website: plain HTML/CSS/JS (Vite), no auth, no SDK, no ZK. Use for landing pages, marketing sites, docs, portfolios — anything with no logged-in users. It can still call one optional serverless function (e.g. an email list — functions/subscribe.js). See the static-site scaffold.

If unsure, ask (AskUserQuestion). Most of the workflow below assumes the full app; the Static websites note under step 4 covers how the static path differs.

Workflow

1 — Understand the idea

Restate what they want in one or two sentences. Ask only what's genuinely unclear (use AskUserQuestion, ≤3 questions). Typical gaps: who logs in, what records exist, is there a chat/feed, is there an AI assistant. Don't over-ask — most ideas imply the answers.

Read the full file on GitHub · 281 lines

Files

What ships with it

60 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.

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.

8d ago First seen · 281 lines · 0 tokens per session scan A 5e3c0928c9ef

Subscribe to this mod's changes

build-muhkoo-app is a skill published in the GitHub repository muhkoo/builder (2 stars, last pushed 2mo ago), licensed MIT. It adds 125 tokens to every session and 3,882 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 2026-08-31.

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