mac · open beta · invite required

Cosmos for Mac

Cosmos.app lives in your menu bar. Background iMessage sync, morning texts with receipts, and today in one tap. You need a cosmos account with an invite before sync means anything.

continue install how

what you get today

Cosmos.app in ~/Applications. Menu bar, iMessage sync, morning text with receipt links.
Today at cosmos.polarity-lab.com or inside the app. One frog, a receipt on every item.
Know in the top bar. Edit what cosmos believes and what you taught it to fade.
Optional. MCP for Cursor and Claude (same install script).

Building toward App Store distribution. Open beta today via install script.

install

Invite required. Sign in or create an account with an invite, then run the installer in Terminal.

Direct download: Cosmos-mac.zip (same build as the script below)

mac release: checking current bundle…

installer

curl -fsSL https://cosmos.polarity-lab.com/install.sh | sh

Read first: install.sh · dry run: curl … | sh -s -- --dry-run

Run the command above (Node 20+ required for MCP components).
Open Cosmos.app from Applications. Grant Full Disk Access if iMessage sync is blocked.
Thread opens for connect. Paste your MCP key or finish OAuth, then open today.

after install

Gatekeeper — right-click Cosmos.app → Open once if macOS blocks it.
Full Disk Access — System Settings → Privacy → Full Disk Access → add ~/Applications/Cosmos.app (required for Messages).
Keychain — choose Always Allow on first sync prompt.

wire cursor or claude (optional)

The install script merges Cosmos into MCP configs you already use. Agent loop: briefing → path → query → capture → recall.

Hosted MCP: https://cosmos.polarity-lab.com/api/mcp

npm install -g @polarity-lab/cosmos-mcp
npx -y @polarity-lab/cosmos-mcp provision pmk_xxx
npx -y @polarity-lab/cosmos-mcp daemon install
npx -y @polarity-lab/cosmos-mcp daemon kick

Source: cosmos-mcp (MIT). Backend API is hosted, not open source.

rollback

npm uninstall -g @polarity-lab/cosmos-mcp
# config backups: ~/.cursor/mcp.json.bak.* etc.

No invite yet? Join the waitlist or email [email protected] for pilot access.