curiostack/
Open beta · free · no card

Save what you read, listen to, watch.
Recall any of it.

One library for every article, podcast, and video that catches your attention. Podcasts and YouTube are auto-transcribed — highlight the exact moment, drop a margin note, search every word. Connect Claude via MCP and your AI can read what you read.

Start saving — free See how it works
Articles · podcasts · YouTube · newsletters · social bookmarks — one library, transcribed and searchable.
Migrating from Pocket, Feedly, Inoreader, Readwise Reader, Instapaper, Snipd, or Omnivore? OPML & direct import in 5 min →
01 · THE PROBLEM

You consume a lot. You remember almost none of it.

A great article on Tuesday. A podcast moment that stuck on the train. A YouTube essay someone linked in Slack. Two weeks later — all gone. Five apps, fifty tabs, and nothing you can search.

The best things you read this year live in scattered tabs, half-listened podcasts, and a folder called "saved" you never open. CurioStack catches all of it.
— WHAT CURIOSTACK IS BUILT FOR
02 · HOW IT WORKS

Capture, transcribe, recall.

CurioStack is as low-friction as pasting a URL or tapping "share." Articles, podcasts, and YouTube go in. Transcripts, highlights, and notes come out. Everything is searchable — by you, or by Claude.

STEP01

Save anything

Paste a URL. Hit the share button. Use the browser extension on something you scrolled past. CurioStack detects what it is — article, podcast feed, YouTube channel, newsletter — and pulls in everything new from there on out via recurring RSS.

STEP02

Every word, searchable

Every podcast and YouTube video you save is auto-transcribed. Highlight the exact phrase. Drop a margin note. Search across articles, transcripts, and your own notes. Nothing in your library is opaque.

STEP03

Find it. Or ask Claude.

Open it in the reader on the train. Ask Claude via MCP: "what did I read about attention this month?" — and get answers grounded in your highlights. Your curiosity, fully indexed, on tap from any AI client that speaks MCP.

EVERYTHING IN ONE LIBRARY → RRSS · Atom feeds PPodcasts · transcribed YYouTube · transcribed NNewsletters SSocial bookmarks ★Highlights · notes MMCP for Claude
03 · THE LIBRARY

A library you can actually recall.

Every article you finished. Every podcast moment you highlighted. Every video you saved at 11pm and meant to come back to. CurioStack holds it all and feeds it back when you need it.

  • ARecurring RSS for everything. Articles, podcast episodes, YouTube channels — subscribe once, new items flow in forever.
  • BAuto-transcribed podcasts & YouTube. Search what was said at 22:14. Highlight the phrase. Drop a note. Your audio and video become text.
  • CMCP server for Claude. Connect Claude Desktop, Claude Code, or any MCP client and ask your library questions. Grounded answers, citations to your highlights.
  • DYours, private by default. What you save, read, and highlight is yours alone. Make a public stack if you want — or don't.
04 · THE SOCIAL LAYER · OPTIONAL

And when you're ready: read what your people save.

Your library is yours first. But you can flip on a public stack and a quiet "what your people saved" lane — discovery through humans you trust, not an algorithm. Off by default. Use it when it's useful.

EL
Elena Lutz
Senior engineer · Spotify · Stockholm

Distributed systems, platform thinking, and the occasional 3-hour podcast about fermentation.

This week's picks
RHillel Wayne · formal methods
PThe Changelog Podcast
NIncrement Magazine
31 sources · 1.2k followers
MR
Mireille Reyes
Climate researcher · ETH Zurich

Policy, ecology, and long-form reporting. Thinks spreadsheets are a kind of poem.

This week's picks
YOur Changing Climate · YouTube
NHeatmap News
RHannah Ritchie · essays
28 sources · 862 followers
OK
Oskar Konig
Founder · design studio · Berlin

Morning YouTube, afternoon essays, long walks in between. Obsessed with interface history.

This week's picks
PDesign Details Podcast
RBrendan Dawes · notes
YThe Origin of Design · YouTube
19 sources · 448 followers
"Build your brain first. Share it when you feel like it."
— Social layer · opt-in · growing
05 · INSIDE

One library, quietly arranged.

Reverse-chronological. Nothing reshuffled. Articles, podcast transcripts, and YouTube transcripts side by side — with highlights, notes, and a clean reader that doesn't argue with you.

Pocket · Feedly · Readwise · Snipd

The scattered stack

  • Articles in Pocket or Instapaper. Feeds in Feedly or Inoreader. Two subscriptions before you save anything.
  • Podcast clips in Snipd. Videos on YouTube. Highlights in Readwise. Each format trapped in its own app.
  • Audio and video stay opaque without a transcript tool. Search is per-app, per-format.
  • Your AI can't read any of it. Where was that quote again?
CurioStack

One library · one brain

  • Articles, podcasts, YouTube, newsletters, and social bookmarks in one place — auto-fed by RSS.
  • Podcasts and YouTube auto-transcribed. Search every word, highlight any moment, drop a note.
  • Claude and any MCP client can read your library and cite your highlights.
  • Quiet, reverse-chronological reader. No ranking model arguing with you.
06 · QUESTIONS

Answers, before you ask.

A few of the things we hear most from new readers. Missing something? Drop us a line and we'll write back.

How does CurioStack compare to Pocket, Instapaper, or Omnivore? +
All great for saving articles. CurioStack adds the rest of what you actually consume — podcasts (auto-transcribed), YouTube videos (auto-transcribed), newsletters, and links from social media via the browser extension and share target. Plus recurring RSS, highlights with margin notes inside the source, and a Claude MCP server so your AI can read what you read. If you're migrating from Pocket (Mozilla shut it down in 2025) or Omnivore (shut down in 2024), OPML and direct import bring everything across in five minutes.
How does CurioStack compare to Feedly or Inoreader? +
Feedly and Inoreader pioneered modern RSS reading and they're still great at it. CurioStack speaks RSS too — recurring feeds for articles, podcast episodes, and YouTube channels — then keeps going: podcasts and YouTube get auto-transcribed (not just listed), you can highlight and annotate every word, articles render in a clean reader, and a Claude MCP server lets your AI read your library and cite your highlights.
Is CurioStack a Readwise Reader alternative? +
Closest match in the space. Readwise Reader pioneered the highlight-across-everything model and we're inspired by it. CurioStack differs in: auto-transcribed podcasts and YouTube (full transcript inline, not just clips), capture from social media via browser extension and share target, a native Claude MCP server for your AI, and an opt-in public-stack social layer for discovery through people.
How does CurioStack compare to Snipd or other podcast-clipping apps? +
Snipd is the gold standard for podcast clips. CurioStack does podcast transcripts and highlights too — and adds the same for YouTube videos, plus articles, newsletters, and social bookmarks in the same library, with a Claude MCP server on top. If you only care about podcasts, Snipd is excellent. If you want one home for everything you read, listen to, and watch, that's CurioStack.
What can I save into CurioStack? +
Articles, blog posts, newsletters, podcast episodes, YouTube videos, and links you scroll past in socials (via the browser extension and share target). Subscribe to recurring feeds — RSS, podcast feeds, YouTube channels — and new items flow in automatically. One save, then forever.
Is this a notes app like Notion or Obsidian? +
Different angle. Notion and Obsidian are for the notes you write — your own ideas, todos, project docs, free-form pages. CurioStack is for the content other people make — articles, podcasts, videos, newsletters. The highlights and margin notes you add live inside the article or transcript they belong to, not in a free-floating vault. If you want a knowledge base for your own writing, use Notion or Obsidian. If you want one searchable home for everything you read, listen to, and watch, that's us.
Do podcasts and YouTube videos really get transcribed? +
Yes. Every podcast episode and YouTube video you save is automatically transcribed. You can read along, jump to a timestamp, highlight the exact phrase, and attach a note. Transcripts are fully searchable across your library alongside your articles.
Can Claude or another AI read what I save? +
Yes. CurioStack runs an MCP (Model Context Protocol) server. Connect Claude Desktop, Claude Code, or any MCP-compatible client and ask questions like "what did I read about attention this month?" or "summarize the Ezra Klein episode I highlighted." Your library, on tap, with citations to your own highlights.
Is there a social layer? +
Yes, and it's opt-in. Your sources can be a public stack at curiostack.com/u/yourname so other curious people can subscribe to your taste — and you can subscribe to theirs. What you actually read, save, highlight, or annotate stays private. The social layer is a feature, not the front door — and we expect it to grow into a bigger part of the product over time.
What does it cost? +
Free to use today. A small paid tier is on the way to unlock unlimited sources, bulk transcription, and bulk imports from OPML / Pocket / Readwise — but the core library, capture, and recall stay free.
Can I import my existing feeds? +
Yes. OPML import on day one, plus direct connectors for Feedly, Inoreader, Pocket, Readwise, and most podcast apps. Your library is five minutes of clicks away.
Does CurioStack track my reading? +
No. Your curiosity is yours. We store only what's needed to keep your library in sync across your devices and to expose it to your own MCP clients. Nothing is sold, profiled, or used to target you.
07 · JOIN

Stop losing what you read, listen to, watch.

One library for every article, podcast, and video that catches your attention. Auto-transcribed, highlight-able, and readable by Claude via MCP — or just by you, when you're ready.

Start saving — free Sign in
Free · open beta · no card needed.