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Your Calendar, Contacts, and Messages — Inside Claude

March 25, 2026via github · @mattt
MCPAItoolsautomationworkflow

What this is

Somebody built a tiny app that lives in your Mac's menu bar — that strip of icons at the top right of your screen — and quietly connects Claude to your real personal data. We're talking your iMessages, your calendar, your contacts, your reminders, even where you are right now.

Once it's running, you can ask Claude things like: "Who was the last person I texted about the project, and what did we say?" Or: "Look at my calendar for next week and draft a short message to the client I'm meeting on Thursday." Or simply: "Remind me when I get home."

It's the kind of thing that sounds obvious once you hear it, but nobody has made it this easy before.

Why it matters

Most AI tools work in a bubble. They're smart, but they don't know your world — they don't know who you're meeting, who you spoke to last, or what you've got on your plate tomorrow. This app changes that, and it does it without sending your data anywhere. Everything stays on your own machine.

For someone running a business — a studio, an agency, a shop — this is the difference between a clever assistant and a genuinely useful one.

What to think about

This is still early, and it only works on a Mac. But it's a clear signal of where things are heading: AI that actually knows your context, without needing to live in the cloud to do it.

If you're a Mac user who already uses Claude, this is worth a look: github.com/mattt/iMCP


Words worth knowing

MCP (Model Context Protocol) — A kind of universal plug that lets AI tools connect to other apps and data sources. Think of it like a USB standard, but for AI.

Menu bar app — A small program that runs quietly in the background on a Mac, accessible from the row of icons at the top of your screen. No big window, no fuss.

Local-first — Means the app does its work on your own computer, not on a company's server somewhere. Your data doesn't leave your machine.

LLM (Large Language Model) — The engine behind tools like Claude or ChatGPT. The part that actually reads and writes like a person.

Written by David at AC0.AI. Follow on @ac0hero

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