Point your pen. Comment. Improve.
See how your app works, what changed, and what needs fixing.
Powered by your own Claude Code, right inside VS Code.

I vibe-coded my apps. They worked.
But did I really understand them?

Your project changes. Pen Wiki helps you keep up.
Claude reads your code and creates a clear report about your features, architecture, security, or anything else you want to understand.
After your code changes, run the same check. Pen Wiki compares the results and shows what's fixed, new, or worse.
Point at a finding, leave a comment, or ask Claude to fix it.
Review the plan, approve the change, and run the check again to verify the result.
Point. Comment. Improve.
Write once. Run whenever you need.
A Guide is a Markdown page that tells Claude what to check or document.
Run it against your project today, next week, or after a release. Each run creates a report you can review and compare with earlier results.
Document its features, architecture, components, and dependencies.
See what was added, changed, or removed since the previous run.
Discover new risks, resolved issues, and problems that still need attention.
Compare your code against your own architecture, security, or quality rules.
Check what changed, what passed, and what still needs attention.
Your guides and reports are Markdown files. Keep them with your project and use them again.
Found something that needs attention?
Point at it in your report and choose Fix with Claude.
Claude shows its plan and waits for your approval before making changes on a separate branch.
Review the changed files and test results, then run your Guide again to confirm the issue is resolved.
You decide. Claude does the work. You verify.
Turn your project's Markdown documents and reports into a shared wiki.
Your teammates and clients can explore, comment, and review in their browser — no VS Code or Claude Code required.
Their feedback comes back to your editor. You decide what happens next.
Your product. Your docs. One shared wiki.
14 days free · Per active user
Pen Wiki for VS Code is free.
Use your own Claude Code to understand your project, keep its documentation current, and make improvements.
Bring your team in when you need another perspective.