Lyfe Wu｜一人公司

I built cardisle.me (CardIsle) — a digital business card tool — partly because I needed this for myself. Free basic plan. 2 min setup. Link in bio.

In the email, I add one line: "Personal page: cardisle.me/[username] (projects + screenshots, for reference)" No hard sell. Just a link. The ones who click — convert much higher.

Before every interview, I send HR a link. Not a PDF resume. A link to my digital business card. One HR said: "You're the first candidate here who feels like a person, not a spreadsheet." I got the 2nd round interview. Here's why this works 👇

一人公司工具账单公开：每月不到 2000 元。 其中 ¥1716 是 Claude Max（$249）。 服务器 + 域名 + CDN = ¥48。 内容自动化基本免费。 97% 的钱押在 AI 上。17 万行代码，一个人做完。 工具成本不是门槛了。

Building in public: cardisle.me If this was useful, follow for weekly updates on building solo. #solofounder #coldstart #buildinpublic #saas #indiehacker

7/ If I started over: → Start Zhihu answers during the waiting period → Don't dismiss ANY channel before launch — you don't know where your first paying user will come from → Focus energy on 3 channels max, but keep a light presence on others

1/ I tested 5 channels. The biggest traffic source was NOT the one that brought the paying user. Here's the full breakdown: 🧵

→ Full Chinese write-up in my WeChat newsletter if you want details. Building in public: cardisle.me #vibecoding #solofounder #buildinpublic #indiedev

5/ If you're a non-coder thinking about Vibe Coding: The execution barrier is gone. The judgment barrier remains. And that's actually good news — judgment is learnable. Syntax is just syntax.

I built CardIsle (a SaaS) with Claude Code. 158,000 lines of code. Zero team. Here's what I learned about Vibe Coding as a developer — and what non-coders MUST know before starting: