Capture
One shortcut.
Every surface.
Postclyp reads the DOM, strips the noise, and keeps the full content. Inline button on 7 supported platforms; the ⌘S shortcut and right-click menu cover any other page.
⌘+Ssave anywhere
Postclyp · AI knowledge os
Save the internet.
Let AI make sense of it.
One click saves threads, videos, and articles from 7 supported platforms — and a shortcut or right-click saves anything else. AI sorts it all into living clusters you can search, summarise, and act on.
postclyp.com / clusters / ai-agents
AI agents
Briefed 2h ago“Agents need memory more than they need tools” — long thread on why context windows aren't enough.
r/LocalLLaMA: Llama-4 70B beats GPT-4o on tool use in our benchmark — methodology + raw results
Andrej Karpathy · Building production agents, annotated transcript with code
Free foreverNo credit card30-second setup
02 How it works
Save it once.
It organises itself.
Three quiet steps. No folders, no tags to maintain, no review sessions. The product does the archivist's job while you keep reading.
01Capture
Clip anything with ⌘S
Hit save on any tweet, Reddit thread, YouTube video, PDF, or long essay. The extension pulls the full content — not a link.
⌘+S
02Cluster
AI tags and groups automatically
Postclyp reads what you saved, extracts the signal, and drops it into the right cluster. No rules to write. New cluster if it doesn't fit.
“Karpathy on agents”→#agents#ml
“r/LocalLLaMA bench”→#bench#agents
“Stratechery essay”→#essay#biz
03Brief
Get a digest of what you saved
Every week (or on demand), AI writes a readable briefing across each cluster. What's new, what contradicts, what's worth re-reading.
✦ Briefing · AI agents · week 16
Three threads this week argue that memory, not tooling, is the next agent bottleneck. Karpathy's talk aligns with @swyx; the LocalLLaMA benchmark contradicts both on open-model performance.03 Try it live
Click a cluster.
See what a real one looks like.
This is a staged preview — real clusters pull from your actual saves. Pick one on the left to see the auto-generated briefing and underlying items.
AI agents
Briefed 2h ago42 saves · across 4 sources · auto-updated
AI briefing · week 16
Three threads converge on memory as the bottleneck. Karpathy's talk aligns with @swyx's argument; the LocalLLaMA benchmark pushes back on open-model claims.
"Agents need memory more than tools" — long thread on context limits
r/LocalLLaMA — Llama-4 70B beats GPT-4o on tool use
Karpathy · Building production agents, annotated transcript
The new primitive: context windows as a business model
04 The details
Built for people who read too much.
The kind of reader who has 347 open tabs, a Readwise export folder nobody opens, and three overlapping Notion databases.
One shortcut.
AI briefings
Weekly digest
A summary of every cluster, what's new, what contradicts — in your inbox Monday.
✦ Brief · agents · wk16
Memory is the bottleneck — 3 threads converge, @swyx + Karpathy vs LocalLLaMA bench.Search
Semantic, not keyword
Search “that thing about agent memory” and find it — even if those exact words aren't there.
⌘K · “that karpathy thing on memory”
Export
Your data leaves, any time.
Postclyp isn't a walled garden. Send clusters to NotebookLM, or export as Markdown or PDF. Your saves are yours.
NotebookLMMarkdownPDF
Privacy
Never trains on you
Your saves are never used for model training. Extension only reads pages you explicitly save. No background collection.
Read our privacy policy06 FAQ
Frequently asked.
Major social platforms (X, Reddit, LinkedIn), AI conversations (ChatGPT), video (YouTube), plus any web page via ⌘S — the universal extractor handles everything else, including Medium articles.
Yes. Your saves are never used to train models. The extension only reads a page when you explicitly hit save — there's no background scraping, tracking, or telemetry.
Always. Send clusters to NotebookLM, or download as Markdown or PDF. No lock-in, by design.
When you save something, Postclyp reads the content, extracts entities and themes, and either adds it to an existing cluster or proposes a new one. You can rename, merge, or split any cluster.
Captures queue offline and sync when you reconnect. The dashboard is online-only — we're experimenting with an offline read mode for Pro.
Your tabs deserve better.
One-click install. 30 seconds to your first save. Free forever.