Medium's agentic notebook: capture scattered thoughts, use AI to rewrite, research and connect ideas, and turn them into finished writing.
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What is TK?
An agentic notebook to build your best thinking
TK is the agentic notebook by Medium. Capture every spark — from shower thoughts to forgotten notes — and let AI work right where you write: the TK assistant rewrites, continues, researches, proofreads and summarizes, while inline TK commands answer questions or run tasks without leaving your draft. TK connects the dots across your notes, surfaces new possibilities, and helps you turn thinking into writing that is unmistakably yours. A built-in community lets you publish to friends or publicly, and an MCP server connects TK to your favorite LLMs and AI tools.
- AI assistant built into the writing flow
- Inline commands for questions, research and tasks
- Import from Medium, Bear, Obsidian, Apple Notes and Evernote
- Libraries for sharing, comments and guest writing
- MCP server and Claude plugin
TK is in early access: Medium members can sign in, or join with an invite from someone already using TK. Friends of Medium get the full plan with more AI assistance.
Platforms and languages
TK Availability
Platforms
Languages
Capabilities
TK Key Features
AI where you write
The TK assistant rewrites, continues, researches, proofreads and summarizes without breaking your flow.
Inline TK commands
Leave a TK inline in your draft to ask a question, do research or run a task — no need to leave the page.
Import your writing
Bring in work from Medium, Bear, Obsidian, Apple Notes and Evernote.
Built-in community
Publish to friends, share publicly, or build a Library others can comment on and guest-write in.
MCP server
Connect your favorite LLMs and AI tools through TK's MCP server and a Claude plugin.
Best for
Who uses TK?
Writers and thinkers
Turn scattered notes and shower thoughts into finished writing with AI help
Medium writers and members
Write, research and publish from one notebook connected to Medium
Common questions
TK FAQs
Is TK available to all Medium writers?
TK is in early access. You can join by signing in with a Medium membership or with an invite from someone already on TK. Friends of Medium get the full plan with more AI assistance; everyone else uses the Limited plan.
How do I import my writing into TK?
You can import from Medium, Bear, Obsidian, Apple Notes and Evernote, and keep working on imported drafts inside TK.
Can I use TK on mobile?
Yes. TK is available on iOS and Android as well as on the web.
How is TK different from other AI writing tools?
TK is built for thinking, not just drafting: it connects ideas across your notes, keeps your voice, and turns scattered thoughts into finished writing, with a community and MCP connections built in.
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