Point your Pen. Comment. Improve.

AI builds it.
You stay in control.

Turn your vibe code into a wiki you can understand, review and improve.
Powered by your own Claude Code, right inside VS Code. Share it on the web when you need feedback.

The download is a .vsix: in VS Code open Extensions, press … → Install from VSIX…

Free in VS Code — no account needed.
Pen Wiki Web — share and review with others — is the paid part: 14 days free, then $8 / month per active user.

“I built it with AI. It worked. But did I really understand it?”
Adam, Founder of Pen Wiki
architecture.md · Pen Wiki

One wiki. Two places. Your Claude Code.

Understand and improve your project in VS Code. Bring others in through the web.
Pen Wiki turns Markdown into an interactive workspace connected to your code. Point to anything — ask questions, leave comments, run reviews or request changes. Your own Claude Code does the work on your machine.
Need another opinion? Share your wiki on the web. Others explore, comment and review without VS Code, and their feedback comes straight back to your editor.

3 Back in VS Code — Turn feedback into actionComments become improvements.

Review the feedback, ask Claude to investigate, or turn a comment into a change to your documentation or code. Check the results, run another review, and keep improving.

Understand. Review. Improve. Repeat.

Three ways to understand your project

architecture.mdUnderstand your code

Let Claude explain how your project works. Explore the documentation and ask about anything you don't understand.

security-standards.mdDefine how it should work

Write down your own rules for security, architecture and quality. Simple Markdown, understood by you and Claude.

security-review.mdFind what needs fixing

Review your project against your rules. Explore the findings, request fixes, and verify the results.

Your AI. Your machine. Your control.

One language for you, your AI and your project: Markdown.
Pen Wiki in VS Code is free. Use your own Claude Code to understand, review and improve your project.
Pen Wiki Web brings everyone together. Share your wiki, collect feedback and review as a team — 14 days free, then $8 / month per active person.
You decide what gets shared.

Get Pen Wiki for VS Code