mvp-first

mvp-first is a skill for Claude Code from konglong87/methodology-skills. It costs 49 tokens per session (5,628 once invoked), scanned A, original, MIT.

A way to build the smallest testable version of a complex product or system. MVP means Minimum Viable Product, but here the focus is learning whether key assumptions are correct before building everything.

In plain words
What is it for?
Use it when designing systems with several modules, testing a new product idea, or validating the most important assumptions before committing to a full implementation.
Why use it?
It avoids spending heavily on features or modules that may not solve a real problem. The first version is used to gather evidence and decide what to build next.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it when designing systems with several modules, testing a new product idea, or validating the most important assumptions before committing to a full implementation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/konglong87/methodology-skills/mvp-first
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 konglong87/methodology-skills --skill mvp-first
Clone the repo
git clone --depth 1 https://github.com/konglong87/methodology-skills

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 mvp-first

README.md
[![agentmods](https://agentmods.dev/badge/skills/konglong87/methodology-skills/mvp-first/github.svg)](https://agentmods.dev/skills/konglong87/methodology-skills/mvp-first)
Your own site
<a href="https://agentmods.dev/skills/konglong87/methodology-skills/mvp-first"><img src="https://agentmods.dev/badge/skills/konglong87/methodology-skills/mvp-first/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 mvp-first

Your own site · 80×15
<a href="https://agentmods.dev/skills/konglong87/methodology-skills/mvp-first"><img src="https://agentmods.dev/badge/skills/konglong87/methodology-skills/mvp-first.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 49 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,628 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 $0.00049 $0.05628
Opus 5 $0.00024 $0.02814
Sonnet 5 $0.00010 $0.01126
Haiku 4.5 $0.00005 $0.00563

Measured 10d ago against content hash 4abd4bf5a591, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

mvp-first 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 10d 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.

skills/mvp-first/SKILL.md · 611 lines

How it starts

The opening of the file, as written. The whole thing — 611 lines — stays where its author put it; the contents beside it link to each section on GitHub.

MVP First

前置协议

环境检测

PROJECT_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || echo "unknown")
BRANCH=$(git branch --show-current 2>/dev/null || echo "unknown")
COMMIT=$(git rev-parse --short HEAD 2>/dev/null || echo "unknown")

echo "PROJECT: $PROJECT_ROOT"
echo "BRANCH: $BRANCH"
echo "COMMIT: $COMMIT"

前置技能检查

# 检查前置工件
GOAL_ARTIFACT="memory/artifacts/goal-oriented/latest.json"
DDD_ARTIFACT="memory/artifacts/ddd-strategic/latest.json"

if [ -f "$GOAL_ARTIFACT" ]; then
  echo "FOUND: goal-oriented artifact"
fi

if [ -f "$DDD_ARTIFACT" ]; then
  echo "FOUND: ddd-strategic-design artifact"
fi

mkdir -p memory/artifacts/mvp-first

MVP First

Overview

MVP(Minimum Viable Product)不是"最小可用产品",而是"最小可验证产品"。

核心目的:用最小成本验证关键假设,避免基于未经验证的假设投入大量资源。

MVP 的目标是学习,不是交付产品。每一次 MVP 都是在回答一个关键问题:用户真的需要这个吗?

When to Use

digraph when_to_use {
    rankdir=TB;
    node [shape=box, style=filled, color="#c8e6c9"];

    "用户提出新需求" [shape=ellipse, color="#bbdefb"];
    "功能是否复杂?" [shape=diamond, color="#fff9c4"];
    "是否验证过假设?" [shape=diamond, color="#fff9c4"];
    "直接实现" [color="#f8bbd0"];
    "应用 MVP 思维" [color="#c8e6c9"];

    "用户提出新需求" -> "功能是否复杂?";
    "功能是否复杂?" -> "直接实现" [label="否, 简单修改"];
    "功能是否复杂?" -> "是否验证过假设?" [label="是, 新系统"];
    "是否验证过假设?" -> "直接实现" [label="是"];
    "是否验证过假设?" -> "应用 MVP 思维" [label="否"];
}

触发场景:

  • 用户说"我想做一个XX功能"、"帮我规划这个项目"
  • 功能涉及多个子系统或复杂架构
  • 用户未验证过需求假设

不适用场景:

  • 简单的 bug 修复或配置修改
  • 用户明确要求完整方案
  • 已经验证过需求的项目迭代

The MVP Mindset

Core Questions (Must Ask Before Implementation)

在给出任何实现方案前,必须回答:

  1. 核心假设是什么?

    • 用户真的需要这个功能吗?
    • 用户会使用这个功能吗?
    • 这个功能能解决用户的问题吗?
  2. 最小验证成本是什么?

    • 如何用最少的时间和资源验证假设?
    • 能不能先手动做一遍?
    • 能不能用现成工具代替开发?
  3. 验证成功的标准是什么?

    • 多少用户使用算成功?
    • 什么数据证明假设成立?
    • 多久能得到结论?

MVP is NOT

❌ MVP 不是"功能简化版"
   - "保留核心功能,砍掉次要功能" → 这是产品规划,不是 MVP
   - MVP 的目标不是交付产品,而是验证假设

❌ MVP 不是"上线最小可用版本"
   - "先上线再迭代" → 可能浪费数周开发用户不需要的功能
   - MVP 可以不上线,甚至不需要写代码

❌ MVP 不是"快速交付"
   - "1周上线" → 如果方向错误,1周也是浪费
   - MVP 的目标是学习方向,不是交付速度

Read the full file on GitHub · 611 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. 10d ago First seen · 611 lines · 49 tokens per session scan A 4abd4bf5a591

Subscribe to this mod's changes

mvp-first is a skill published in the GitHub repository konglong87/methodology-skills (5 stars, last pushed 1mo ago), licensed MIT. It adds 49 tokens to every session and 5,628 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

importing-a-codebase

Use when the repo holds real source code but no specs: the existing-codebase branch of setting-up-a-project, normally reached via that dispatcher, directly only when the situation is unmistakable. Not for empty workspaces (starting-a-new-project) or feature work in a specced project (brainstorming).

JetBrains/thinkrail · 69 tokens

starting-a-new-project

Use when the workspace is empty — no code yet — and the user brings a raw idea: the brand-new branch of setting-up-a-project, normally reached via that dispatcher, directly only when the situation is unmistakable. Not for features in an existing project — use brainstorming instead.

JetBrains/thinkrail · 61 tokens

todos

This chat has a shared, live TODO plan — your tasks for the conversation, which the user also edits. Read this skill and reach for the todo tools whenever a request takes more than a couple of steps. It covers the plan model (group = task, items = its steps; loose items are the user's lane), how to work it: propose…

JetBrains/thinkrail · 127 tokens

writing-workflow-skills

Use when adding a new workflow skill to pi-thinkrail-workflow, changing an existing workflow skill's role, trigger, handoff, or structure, or checking a workflow skill against the workflow system's rules. Not for authoring general-purpose skills outside this package.

JetBrains/thinkrail · 60 tokens

brainstorming

Use this BEFORE any creative or feature work: building a new feature, adding functionality, changing behavior, or making a nontrivial design decision. Turns the user's request into a validated design — recorded as a spec-graph task-spec — before any implementation. Do not skip this because a change looks small.

JetBrains/thinkrail · 65 tokens

reviewing-changes

Use when a review package asks you to review a plan step's change set (todo.startReview): you are the REVIEWER, not the author. How to judge an agent-written diff, file findings with addreviewcomment, and settle with exactly one reviewverdict.

JetBrains/thinkrail · 59 tokens