product-lens

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🇺🇸

Original

English

🇨🇳

Translation

Chinese

Product Lens — Think Before You Build

Product Lens — 开发前审慎思考

When to Use

适用场景

Before starting any feature — validate the "why"
Weekly product review — are we building the right thing?
When stuck choosing between features
Before a launch — sanity check the user journey
When converting a vague idea into a spec

启动任何功能开发前 — 验证「为什么要做」
每周产品复盘 — 我们是否在做正确的事？
纠结多个功能的选择时
上线前 — 合理性检查用户旅程
需要将模糊想法转化为需求规格时

How It Works

运行逻辑

Mode 1: Product Diagnostic

模式1：产品诊断

Like YC office hours but automated. Asks the hard questions:

1. Who is this for? (specific person, not "developers")
2. What's the pain? (quantify: how often, how bad, what do they do today?)
3. Why now? (what changed that makes this possible/necessary?)
4. What's the 10-star version? (if money/time were unlimited)
5. What's the MVP? (smallest thing that proves the thesis)
6. What's the anti-goal? (what are you explicitly NOT building?)
7. How do you know it's working? (metric, not vibes)

Output: a

PRODUCT-BRIEF.md

with answers, risks, and a go/no-go recommendation.

类似YC办公时间但完全自动化，会提出直击本质的问题：

1. Who is this for? (specific person, not "developers")
2. What's the pain? (quantify: how often, how bad, what do they do today?)
3. Why now? (what changed that makes this possible/necessary?)
4. What's the 10-star version? (if money/time were unlimited)
5. What's the MVP? (smallest thing that proves the thesis)
6. What's the anti-goal? (what are you explicitly NOT building?)
7. How do you know it's working? (metric, not vibes)

输出：一份

PRODUCT-BRIEF.md

文件，包含问题答案、风险评估，以及可行/不可行的建议。

Mode 2: Founder Review

模式2：创始人视角复盘

Reviews your current project through a founder lens:

1. Read README, CLAUDE.md, package.json, recent commits
2. Infer: what is this trying to be?
3. Score: product-market fit signals (0-10)
   - Usage growth trajectory
   - Retention indicators (repeat contributors, return users)
   - Revenue signals (pricing page, billing code, Stripe integration)
   - Competitive moat (what's hard to copy?)
4. Identify: the one thing that would 10x this
5. Flag: things you're building that don't matter

从创始人视角复盘你当前的项目：

1. Read README, CLAUDE.md, package.json, recent commits
2. Infer: what is this trying to be?
3. Score: product-market fit signals (0-10)
   - Usage growth trajectory
   - Retention indicators (repeat contributors, return users)
   - Revenue signals (pricing page, billing code, Stripe integration)
   - Competitive moat (what's hard to copy?)
4. Identify: the one thing that would 10x this
5. Flag: things you're building that don't matter

Mode 3: User Journey Audit

模式3：用户旅程审核

Maps the actual user experience:

1. Clone/install the product as a new user
2. Document every friction point (confusing steps, errors, missing docs)
3. Time each step
4. Compare to competitor onboarding
5. Score: time-to-value (how long until the user gets their first win?)
6. Recommend: top 3 fixes for onboarding

梳理真实的用户体验：

1. Clone/install the product as a new user
2. Document every friction point (confusing steps, errors, missing docs)
3. Time each step
4. Compare to competitor onboarding
5. Score: time-to-value (how long until the user gets their first win?)
6. Recommend: top 3 fixes for onboarding

Mode 4: Feature Prioritization

模式4：功能优先级排序

When you have 10 ideas and need to pick 2:

1. List all candidate features
2. Score each on: impact (1-5) × confidence (1-5) ÷ effort (1-5)
3. Rank by ICE score
4. Apply constraints: runway, team size, dependencies
5. Output: prioritized roadmap with rationale

当你有10个想法需要从中选2个时使用：

1. List all candidate features
2. Score each on: impact (1-5) × confidence (1-5) ÷ effort (1-5)
3. Rank by ICE score
4. Apply constraints: runway, team size, dependencies
5. Output: prioritized roadmap with rationale

Output

输出结果

All modes output actionable docs, not essays. Every recommendation has a specific next step.

所有模式都会输出可落地的文档，而非长篇论述。每条建议都附带明确的下一步行动。

Integration

配套使用

Pair with:

```
/browser-qa
```
to verify the user journey audit findings
```
/design-system audit
```
for visual polish assessment
```
/canary-watch
```
for post-launch monitoring

可搭配以下工具使用：

```
/browser-qa
```
验证用户旅程审核结果
```
/design-system audit
```
进行视觉打磨评估
```
/canary-watch
```
用于上线后监控