Three tools. One philosophy.
Local-first tools
for the way you
actually build.
Cortex is a family of native, local-first tools for developers — an AI agent, persistent memory for Claude Code, and a beautiful database client. Your machine, your data, no token tax.
Cortex Agent
macOS · SwiftUI app
Your AI agent, running on your Mac.
Native macOS AI agent that talks to your local claude/codex CLI — no API tokens burned.
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Cortex Claude
MCP server · Python · PyPI
Memory that remembers what matters.
Local-first, token-efficient persistent memory for Claude Code, via an MCP server.
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Cortex DB
macOS · SwiftUI app
Your databases, beautifully native.
A native, fast, beautiful database client for macOS. Pure Swift, no daemon.
Learn moreBuilt on one idea: your machine first.
Every Cortex tool runs locally by default. No data leaves your machine unless you ask it to, nothing burns API tokens behind your back, and everything stays fast because there's no round trip to a server you don't control.
Local-first
Your data lives on your machine, period.
Zero token tax
Uses your local CLIs and models by default.
Native & fast
Real apps, not Electron wrappers.
One language
Shared design and philosophy across the family.