agentmods.dev

mvp-launch

mvp-launch is a skill for Claude Code, Codex from ooiyeefei/ccc. It costs 73 tokens per session (1,071 once invoked), scanned A, original, MIT.

A reference checklist for deciding whether a web app MVP is ready to go live. It defines what “done” means across ten areas, including Stripe payments, mobile behavior, onboarding, AI reliability, email, error logging, feedback, authentication, domain setup, and the database.

In plain words
What is it for?
Use it to guide pre-launch reviews, define completion criteria, and check that the app is stable, usable, and trustworthy enough for its first users.
Why use it?
It provides concrete launch checks so important practical work is not overlooked or replaced by unnecessary extra building.

Skill for Claude CodeCodex

Part of the mvp-launch plugin — 1 skill, 1 command, 1 agent shipped together

not rated 484 1mo ago A scan 73 tokens original MIT
View the source file ooiyeefei/ccc
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 skills/ooiyeefei/ccc/mvp-launch
Any agent
npx skills add ooiyeefei/ccc --skill mvp-launch
Clone the repo
git clone --depth 1 https://github.com/ooiyeefei/ccc

Made for: Claude Code, Codex.

Or install mvp-launch, the plugin that ships this one along with the rest of its 1 skill, 1 command, 1 agent.

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 mvp-launch

README.md
[![agentmods](https://agentmods.dev/badge/skills/ooiyeefei/ccc/mvp-launch.svg)](https://agentmods.dev/skills/ooiyeefei/ccc/mvp-launch)
Your own site
<a href="https://agentmods.dev/skills/ooiyeefei/ccc/mvp-launch"><img src="https://agentmods.dev/badge/skills/ooiyeefei/ccc/mvp-launch.svg" alt="Measured on agentmods" 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 1,071 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 $0.00073 $0.01071
Opus 5 $0.00036 $0.00535
Sonnet 5 $0.00015 $0.00214
Haiku 4.5 $0.00007 $0.00107

Measured 5d ago against content hash 799216d7c151, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

mvp-launch 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 5d 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.

plugins/mvp-launch/skills/mvp-launch/SKILL.md · 178 lines

How it starts

The opening of the file, as written. The whole thing — 178 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MVP Launch Checklist

A battle-tested 10-point checklist for web app MVP launches. Based on building 30+ apps.

Philosophy: "Don't overbuild. Just make it stable, usable, and something people can trust."

The 10-Point Checklist

1. Stripe Setup (Payment Infrastructure)

What counts as DONE:

  • Trials configured with appropriate period
  • Plan switching works (upgrade/downgrade)
  • Failed payment handling with retry logic
  • Webhook endpoint registered in Stripe Dashboard
  • Live keys tested (not just test mode)

Required Webhook Events:

  • customer.subscription.trial_will_end
  • customer.subscription.created
  • customer.subscription.updated
  • customer.subscription.deleted
  • invoice.payment_succeeded
  • invoice.payment_failed
  • invoice.created
  • checkout.session.completed

Verification: See references/stripe-testing.md

2. Mobile-First Design

What counts as DONE:

  • Tested on real phones (not just browser resize)
  • Touch targets appropriately sized (44x44px minimum)
  • Forms work on mobile keyboards
  • No horizontal scroll on mobile

Key insight: Browser resize mode lies. Real device testing is mandatory.

Bonus (not required):

  • PWA manifest for installability
  • Offline capability for core features

3. Smooth Onboarding

What counts as DONE:

  • Steps kept minimal (3-5 max)
  • Users guided to a fast first win
  • Progress indicator if multi-step
  • Can be skipped/completed later

Anti-pattern: Don't require 10 fields before users see value.

4. AI & Automation Stability

What counts as DONE:

  • API errors handled gracefully
  • Retry logic with exponential backoff
  • Edge cases don't crash the app
  • Timeouts configured appropriately
  • Fallback behavior when AI fails

Good defaults:

  • 3 retry attempts
  • 30-60s timeout for complex operations
  • User-friendly error messages

5. Critical Emails

What counts as DONE:

  • Welcome email (immediate after signup)
  • Trial-ending email (before trial expires)
  • Failed payment email (when charge fails)
  • Password reset (if not using external auth)

Read the full file on GitHub · 178 lines

Files

What ships with it

2 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.

  1. 5d ago First seen · 178 lines · 73 tokens per session scan A 799216d7c151

Subscribe to this mod's changes

mvp-launch is a skill published in the GitHub repository ooiyeefei/ccc (484 stars, last pushed 1mo ago), licensed MIT. It adds 73 tokens to every session and 1,071 once invoked, about $0.0004 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.

Planning
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