New — Version History is live

Prompts are living
documents.

PromptBase stores them. Notion organizes them. closedNote is the only tool that remembers how they evolved — every draft, every edit, every version.

Powered by

Supabase
OpenAI
HuggingFaceHuggingFace
Anthropic
coming soon

The gap

Every tool stores prompts.
None of them remember.

PromptBase / FlowGPT

Built for sharing, not crafting

Great marketplaces for discovering prompts. But your prompts are public by default, and there's no memory of how they were built. When something stops working, you're starting from scratch.

Notion / Notes apps

Flexible but completely dumb

Notion doesn't know a prompt from a grocery list. No AI awareness, no refinement, no version tracking. You're just storing text with extra friction.

closedNote

Private, versioned, intelligent

Your prompts stay yours. Every edit is tracked with a visual diff. Iterate with AI refinement, import with OCR, and always know how you got to the version that works.

How we stack up

Built different.

FeatureclosedNote
Version history & diff view
Private by default
AI prompt refinement
OCR — import from screenshots
Prompt chaining
Built specifically for prompts
Version History

Git for your prompts.

Every time you save an edit, closedNote snapshots the version. Jump back to any point in time, see exactly what changed line-by-line, and restore with one click — without overwriting your history.

  • Full version timeline on every prompt
  • Visual diff — green added, red removed
  • Restore any version without losing history
  • No bloat — only versions when content changes
Version History — Code Review Prompt
v3
Mar 16
v2
Mar 15
v1
Mar 14
Act as a coding assistant. You are an expert software engineer. Review the following code and identify bugs, security issues, or performance problems. Be specific and actionable.
Restore v2

Everything included

One tool. Everything you need.

Version History

NEW

Every edit is tracked. See exactly what changed between drafts with a visual diff, and restore any previous version in one click.

AI Refinement

Paste a rough idea and let AI restructure it into a clean, reusable prompt — using your own API key.

OCR Import

Photograph a whiteboard, screenshot a chat, or upload any image — closedNote extracts the text and saves it as a prompt.

Prompt Chains

String prompts together into multi-step workflows. Output from one step feeds directly into the next.

Your prompts deserve better.

Stop losing great drafts. Start building a prompt library that actually remembers how it was built.