Let's catch up.
Are you free Thursday at 2 PM to talk about the project? A quick 30-minute call.
Meeting details, rememberedA SHARED, LOCAL-FIRST MEMORY
A super brain
in your Mac notch.
A shared, local-first memory for you and your agents. Cortex watches your screen and builds context, so you and your agents can pick up where you left off.
See it in action Built for macOS · In development
ONE MEMORY. ACROSS YOUR TOOLS.
Claude
Codex
OpenCode
ClaudeCodexOpenCode
YOUR DAY. A LITTLE MORE CONNECTED.
Ask Cortex On your Mac
YOU ASK
What time did Abhinav suggest for our call on LinkedIn?
CORTEX
Thursday at 2 PM, for 30 minutes. Abhinav suggested a quick call about the project.
Abhinav · Yesterday
“Are you free Thursday at 2 PM to talk about the project? A quick 30-minute call.”
Fictional example · no personal data01 / YOUR LOCAL MEMORY
Your screen becomes context.
Your AI gets the picture.
Chats, documents, and the pages you read. Cortex connects available screen text into a memory on your Mac, ready for you and your connected AI tools.
ABHINAV
Can you send me the project notes tomorrow morning?
Of course. I'll send them over.
SCREEN 01 / 04 ·
Available text → local memory
YOUR DAY, AS IT HAPPENS
CortexLOCAL MEMORYStored on your Mac
YOU ASK
What did Abhinav ask me to send?
The project notes, tomorrow morning.
↗ Messages · Abhinav
✧ CONTEXT → NEXT STEP
Task suggestions · concept preview
Send Abhinav the project notes
Tomorrow · 9:00 AMSuggested task
01 · A conversation becomes useful context.
Screen → recall → follow-up
Text capture via macOS Accessibility. Coverage varies by app. Cloud models receive selected context when used.
02 / SHARED MEMORY FOR YOUR HARNESSES
Switch harnesses.
Keep your context.
Out of credits in Codex? Pick up in Claude. Cortex keeps tasks, decisions, and handoff notes together, so switching harnesses doesn't mean explaining everything again.
A common memory and task manager for your harnesses. Share work, update progress, schedule follow-ups, and hand off the next step across your agents.
▤ Shared task memory1 open task
ReadyIn progressDone
LAST SAVED CONTEXT
Hero finished. Next: connect the demo and check mobile.
CortexONE SHARED MEMORY
Save my progress. I'm out of credits.
Codex
What tasks can I pick up?
Claude
What changed on the landing page?
OpenCode
Codex saves the work, decisions, and next steps to Cortex.
Illustrative workflow. Agents use the shared MCP bridge in sessions you open; Cortex doesn't launch agents automatically.
Hit a limit? Save your place.
The task, decisions, and next steps stay in Cortex when you leave a harness.
Open another harness.
Ask Claude, Codex, or OpenCode what is unfinished. The same context is waiting.
Continue without the recap.
The next agent reads the handoff, claims the task, and continues with context.
PERSONAL MEANS PERSONAL
Your memory.
Your space.
Cortex starts with a simple idea: your activity archive belongs on your device.
- Stored on your Mac
- Your captured text and search index stay local.
- Capture on your terms
- Start, pause, or stop capture, and exclude apps.
- Cloud use, explained
- When you use a cloud model, your question and selected context go to that provider. Common secrets are redacted; redaction isn't perfect.
A FEW THINGS TO KNOW
Good questions.
A little more context about Cortex.
What is Cortex?
Cortex is a macOS memory assistant in development. It helps you search text from your computer activity, recall details, and answer questions with links back to the evidence.
Does it record my screen?
Cortex reads text exposed by the foreground app through macOS Accessibility. It doesn't create a video recording of your screen. Some apps and content don't expose readable text, so coverage varies.
Does everything stay on my device?
Your activity archive and search index stay on your Mac. If you configure a cloud model, your question and relevant context are sent to that provider to generate an answer. Provider privacy and retention terms apply.
Can I choose what Cortex remembers?
Capture starts only when you enable it. The desktop app includes start, pause, stop, and app exclusions. Private or unknown browser contexts and protected fields are skipped by the desktop capture pipeline.
Can I use it with my AI tools?
Cortex includes an MCP bridge for compatible AI clients to access its shared memory and task workspace. Setup is documented in the repository.
Can I download it yet?
A public installer isn't available yet. If you'd like to explore the project now, the source and macOS build instructions are available on GitHub.
FOR EVERYTHING YOU DON'T WANT TO LOSE
Keep the thread.
A little less searching. A little more headspace.
Explore Cortex on GitHub Completely open source · macOS · In development