What if every thought had the chance to become something extraordinary? Meet TK, the agentic notebook by Medium. Capture every spark, from shower thoughts to forgotten notes. With AI right where you write, connect the dots, surface new possibilities, and compound what you know without breaking your flow. Then turn your thinking into writing that’s unmistakably yours. With built-in community and an MCP server that connects to your favorite LLMs and AI tools.
I’m Tony, CEO of Medium. TK is our new agentic notebook, built by people who love to write, for a world that now runs on words.
Every AI tool you use gets better the more of your thinking it can read, so every word you write, even the messy ones, works on your behalf.
Chat apps can help you research, but TK helps you write. Three simple steps level up your writing: craft, compound, create.
1. Craft. Writing is thinking.
Craft your best writing distraction free—no clutter and a TK agent that works inline so that you never have take your fingers off the keyboard.
Pull ideas from an instant memory of all your words: voice memos from your walk, partial drafts, Granola notes, Claude research chats, anything you’ve ever written on Medium, and, yes, your old Bear or Obsidian vault.
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2. Compound. Every note makes the next one more useful.
Deep thinking comes from building on what you’ve written before. The TK agent can remember, prompt next steps, and organize all your writing. You can /wikify anything into a mini knowledge base, transform raw ideas into blog posts, and transform blog posts into books.
The deepest thinking requires feedback, so TK ships with built-in social and agentic feedback loops.
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3. Create. The more you write, the more influence you have on the world.
Share privately, publish publicly. Turn your ideas file into apps with Claude Code. Pass your written intelligence to any agent you work with.
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For maximalists, connect your writing to your entire agentic universe and run your entire day from a single Daily Note. Install the TK Claude plugin for this extremist view on fighting brain fry.
Free tier ships with everything other note taking apps charge for: unlimited notes, publishing, and collaboration. Plus built-in agent and social layers.
Pro tier is $12/month for full access to the TK agent, skills, summaries, and MCP.
I'm very anti-AI for writing. I'm reluctantly adopting it for programming in carefully tested doses, because it's good for generating stuff where I don't care too much about the design.
TK added some nice community feel and a different kind of sharing from Medium, which I really appreciated whilst utterly ignoring its AI features.
Without medium & TK I would not have started writing and maybe finishing my 1st book soon.
My best ideas always seem to show up when I'm nowhere near my desk. The hard part isn't capturing them, it's remembering why they felt brilliant in the first place
Just quickly tried it. Is the app notepad friendly? I read that handwriting produces different/(better/more) connections in the brain than typing.
I’ve been using TK daily for about a month, and the community keeps bringing me back. I’ll start reading something wonderful, notice an interesting comment halfway through, and click over to see what that person is writing. Suddenly, an hour has disappeared. It feels like falling down an old-school internet rabbit hole, where one interesting person or idea leads you to another. I’ve really missed that feeling, and it’s been wonderful finding it here.
@Medium For me, writing is how I learn, iterate, and see how much I've grown over time. AI is a fantastic tool for creating and building when you actually use it to sharpen your ideas instead of letting it replace you. TK gets that balance right. It keeps your rough notes within reach, helps connect the threads, and acts like a sounding board while you draft. You’re still the one doing the real thinking and shaping the message, but the tool helps you move from raw concepts to finished writing with way less friction.
my obsidian vault is all chinese, does the agent actually work on chinese notes or is it english-only in practice?
I've been writing online for years. From blog posts to short stories to personal essays. My workflow has changed a lot. I used to draft on Medium, then moved to Google Docs, then Obsidian for YEARS. All of them solved some aspects, but not all of them. I needed a home for my messy drafts, fully formed thoughts, basic notes, and everything else.
TK is the first app to do it. I journal there, use the scratchpad to take notes, write out proposals, blog posts, book reviews, and just general thoughts. It's the first app to give me everything I need while getting out of my way and letting me write. The community of writers is an amazing bonus
After searching for years for a comfortable online writing space that feels 'real' in the sense that I can write and ramble the way my brain cobbles together thoughts, impressions, data, poetics, and my everyday chatter, all the while looking up things I've already written about, I'm smitten that TK fills exactly that need.
As a Medium writer, the double benefit of having all my Medium writing linked to TK, and vice versa, just made my day. At last, a keyword search returns solid results pulled from within my writing universe.
Need I even stress that I loooove the daily note feature. I can embrace my daily journaling practice again without pressure, in a space filled with super-talented and productive creatives. TK is my new ecosystem.
TK is a super compelling entry into the daily note-taking world, with an agentic, mind-amplifying twist.
Lately I’ve been pondering how to build a harness for my mind, because I can already feel the sloppification (🫠) when I let AI do too much of my thinking.
Start with a messy daily note at the top of your day, work through the thought, then get feedback from readers you trust. If you lean in, you can think of TK as a kind of gym for your mind, helping you get those reps in, without too much fuss — with room to write with agents and without handing over the writing or losing your mind.
TK is the cornerstone of my day. It's where I write to clear my head in the morning, where I run my schedule, and where I turn when new ideas come up that I want to get down. I used it last week for a memo about the future of search and for my Saturday shopping list. And I love that I don't have to tag or structure any of my writing, just write once, and it's available for me to explore forever. It's also turned writing from a thing I wish I was doing more of into an actual daily habit. So excited to have it now in the hands of many more people to see what the community does with it.
I think there’s probably no cohort online that’s more skeptical about the rise of LLMs than writers, which I say as someone who’s published a few million words online. So it’s a pretty remarkable testament to the thought and care that the Medium team put into TK that they’ve gotten the balance exactly right for what real writers might want to see out of an “AI” tool that actually does what we’d want.
The biggest thing for me is that this isn’t an app where I prompt the AI, it’s where the AI prompts me. That’s exactly the right inversion of the balance of power, and makes me optimistic about where this platform is headed.
I've used TK for a couple of months. I find it easy and enjoyable to use. It also has the makings of a great writers' group because it's so easy to communicate with fellow writers.
I've found TK a perfect app to order my study in mathematics and physics. Thank you Tony for the excellent work
I've had a blog since 2003, and I started writing on Medium in 2015. I've written mostly about public health (my day job), but I also write about my life and the things that interest me. It's been great to grow a community on Medium, and I'm excited about the possibilities of a bigger community on TK, a community of writers. I've been using TK for a few months, and it has kept me writing each day, reading other people’s writing, and thinking about how to better communicate the complex issues I want to write about. TK is simple, but powerful. It really does feel like a notebook with some superpowers that help you write without writing for you.
About TK by Medium on Product Hunt
“An agentic notebook to build your best thinking”
TK by Medium launched on Product Hunt on November 10th, 2026 and earned 266 upvotes and 44 comments, earning #3 Product of the Day. What if every thought had the chance to become something extraordinary? Meet TK, the agentic notebook by Medium. Capture every spark, from shower thoughts to forgotten notes. With AI right where you write, connect the dots, surface new possibilities, and compound what you know without breaking your flow. Then turn your thinking into writing that’s unmistakably yours. With built-in community and an MCP server that connects to your favorite LLMs and AI tools.
TK by Medium was featured in Productivity (665.5k followers), Notes (8.4k followers) and Artificial Intelligence (483.6k followers) on Product Hunt. Together, these topics include over 321.7k products, making this a competitive space to launch in.
Who hunted TK by Medium?
TK by Medium was hunted by Chris Messina. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how TK by Medium stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Chris Messina
Hey Product Hunt 👋
I’m Tony, CEO of Medium. TK is our new agentic notebook, built by people who love to write, for a world that now runs on words.
Every AI tool you use gets better the more of your thinking it can read, so every word you write, even the messy ones, works on your behalf.
Chat apps can help you research, but TK helps you write. Three simple steps level up your writing: craft, compound, create.
1. Craft. Writing is thinking.
Craft your best writing distraction free—no clutter and a TK agent that works inline so that you never have take your fingers off the keyboard.
Pull ideas from an instant memory of all your words: voice memos from your walk, partial drafts, Granola notes, Claude research chats, anything you’ve ever written on Medium, and, yes, your old Bear or Obsidian vault.
---
2. Compound. Every note makes the next one more useful.
Deep thinking comes from building on what you’ve written before. The TK agent can remember, prompt next steps, and organize all your writing. You can /wikify anything into a mini knowledge base, transform raw ideas into blog posts, and transform blog posts into books.
The deepest thinking requires feedback, so TK ships with built-in social and agentic feedback loops.
---
3. Create. The more you write, the more influence you have on the world.
Share privately, publish publicly. Turn your ideas file into apps with Claude Code. Pass your written intelligence to any agent you work with.
---
For maximalists, connect your writing to your entire agentic universe and run your entire day from a single Daily Note. Install the TK Claude plugin for this extremist view on fighting brain fry.
Free tier ships with everything other note taking apps charge for: unlimited notes, publishing, and collaboration. Plus built-in agent and social layers.
Pro tier is $12/month for full access to the TK agent, skills, summaries, and MCP.
Onward to more writing!