OpenThink

Personal Knowledge

Think clearly,
from anywhere.

OpenThink is a personal knowledge base built for AI. Capture thoughts, organise folders, and access everything through Claude — on any device.

Full-text search across all your notes and thoughts
Folder-level sharing — private by default, shareable when you want
MCP-native — Claude reads and writes your knowledge directly
Runs on Cloudflare — fast everywhere, zero cold starts
Open in Claude View source

How it works

MCP, end to end.

01

Connect

Add the MCP server to Claude. Sign in once with your API key — any device, any time.

02

Capture

Tell Claude to save a thought, link an idea, or store a note. It organises it into your folders.

03

Retrieve

Ask Claude anything. Full-text search returns relevant thoughts in context, instantly.

04

Share

Grant a collaborator read or edit access to a specific folder. Everything else stays private.