v2.6.0 — semantic recall shipped
Notes that connect
themselves.
Cortex is a graph-native second brain. Every note is a node; every reference, an edge. Built for people who think in systems.
$ free tier · no credit card · self-hostable export
~/cortex $ cortex capture "met w/ maya re: q3 relaunch"
→ note created: notes/2026-06-30-1142.md
→ entities detected: [Maya, Q3 Relaunch]
→ linked: notes/people/maya.md, notes/projects/q3-relaunch.md
~/cortex $ cortex recall "what did maya say about onboarding"
→ 3 matches, ranked by relevance:
1. notes/2025-11-03.md — "onboarding flow needs a rethink…"
2. notes/projects/onboarding.md — linked 4 times
3. notes/people/maya.md — last mentioned today
~/cortex $ ▍
99.98%
uptime_30d
118
median_sync_ms
4.2B
notes_indexed
612K
active_graphs
The core module set
Six primitives. One graph. Zero folders.
// capture
capture.write(thought)
A single shortcut pipes any thought — text, voice, clipped link — straight into your graph. No staging area.
// link
graph.autolink(note)
Entity and reference detection runs on every save, wiring new notes into your existing graph in real time.
// recall
graph.query(intent)
Semantic search over your full history — query by intent, not just exact string match.
// sync
sync.replicate(*)
Local-first CRDT sync engine. Works fully offline, reconciles instantly when you're back online.
// secure
vault.encrypt(note)
Client-side encryption by default. Your raw notes never touch our servers unencrypted.
// graph
graph.render(view)
Inspect your second brain as a force-directed graph — filter by tag, date, or connection depth.
// graph.render(view: "force-directed")
Inspect the shape of your own thinking.
Filter the graph by tag, date range, or connection depth. Click any node to jump straight into the note, or trace an edge to see exactly why two ideas are linked.
- depth-limited graph queries
- tag & cluster filters
- exportable as JSON / GraphML
cortex --diff ./typical-notes-app
$ cortex feedback --tail
@priyacodes
"Migrated from a folder-based app in one evening. Backlinks alone justify the switch."
Staff Engineer
@marcus_builds
"The graph query language for recall is the first 'AI feature' in a notes app I've actually kept using."
Founder, devtools
@sofia_writes
"Offline-first and it actually works offline. Refreshing in 2026."
Technical Writer
cat pricing.json
// for personal graphs
"free"
$0/mo
- >unlimited_notes: true
- >autolink: true
- >devices: 2
// for daily-driver use
"pro"
$10/mo
- >everything: free
- >semantic_search: true
- >devices: unlimited
- >history: full
// for shared graphs
"team"
$18/mo
- >everything: pro
- >shared_graphs: true
- >sso: true
- >support: priority