Proofline — your research, remembered.
Proofline turns the work you already do in your AI tool into a living, evidence-backed map of your research — so nothing is lost, and you always know where to go next. Now in invite-only beta — a prototyping hub for exploring new ideas.
Microsoft sign-in is for organizations we've onboarded.
● What to expect
Up and running in three steps
Connect, set up, and start building prooflines.
Connect Your Tools
Install the Proofline connector in under a minute. Works with Claude, ChatGPT, Cursor, and more.
Set Up Your Workspace
Configure your workspace and invite your team to collaborate.
Start Capturing
Turn research conversations into a living, evidence-backed knowledge map.
● Why Proofline
What makes Proofline different
Four principles that guide every feature we ship.
Researcher Controlled
Nothing is saved without your review and explicit approval.
Evidence Backed
Every claim is linked to its supporting evidence.
AI Tool Agnostic
Works alongside Claude, ChatGPT, Cursor, VS Code and more.
Built in the Open
An invite-only beta, still evolving — your feedback shapes what we build.
● Real examples
See what a proofline looks like
Real, public prooflines built in Proofline — open any one to explore its questions, evidence, and conclusions. No sign-in needed.