nocal v3.1: MCP, iOS, and what comes next

Today we are releasing nocal v3.1.

This release is focused on one thing that matters a lot for where nocal is going: connecting your notes and calendar to the AI tools you already use.

MCP: Your Notes and Calendar, Inside Your AI Tools

nocal now ships an MCP server.

MCP (Model Context Protocol) is an open standard that lets AI tools (Claude, ChatGPT, Cursor, VS Code) connect directly to external data sources and take actions on your behalf. When you wire nocal into your AI setup, your notes and calendar are no longer isolated from your agentic workflows.

Here is what that looks like in practice:

• You are prepping for a quarterly review. You ask Claude to pull your meeting notes from the last 30 days, find open action items, and draft a summary into your Q2 note. It does all of that in one step.
• You ask your AI assistant to find every commitment you made to your team this month. It searches across your notes and calendar and returns a list you can act on immediately.
• You start a new project note and ask your agent to populate it with context from your past meetings with that client.

This is the beginning of something larger. The vision is that nocal becomes the persistent layer your AI agents work from: the place where your second brain actually lives, where agentic tools can read context, log work, and surface what matters without you having to copy and paste between apps. We wrote more about where this is heading →

To connect nocal to your AI tools, go to Preferences → Agent Integrations and copy your MCP token. Setup guides are available for Claude, ChatGPT, Cursor, and VS Code.

Connect your first agent →

iOS: Beautiful on iPhone, with Widgets

nocal for iOS launched with v3.0, and v3.1 continues refining that experience.

The iOS app brings the full nocal calendar and notes workflow to iPhone, with touch-native interactions and instant sync with desktop. Whether you are reviewing your week on the couch or capturing a note between meetings, it works the same way it does on desktop.

iOS widgets let nocal surface what matters before you even open the app. Glance at your next event, your current note, or your day at a glance from your home screen or lock screen.

Referral Program

We want more people using nocal, and we think the best way to grow is through people who already love it. So we built a referral program with terms that are actually worth sharing.

Every person you refer who signs up gets you 2 free months of Full Access. Refer enough people and you can earn up to a year of Full Access at no cost. For context: Full Access includes mobile apps, secondary calendars, MCP integration, and everything else nocal has to offer. Getting that for free by sharing a link is a real benefit.

To find your referral link, open Preferences on desktop. The link is yours to share however you want.

A few details: the referral program is currently available on desktop. Terms are subject to change, but any months you have already earned are yours to keep.

What Comes Next

The MCP work in 3.1 is a foundation, not a finish line.

The longer-term direction is this: your calendar and notes should be first-class context for any AI tool you use. Right now, most people's second brain (meeting history, project notes, weekly plans) is locked inside apps that AI cannot touch. The result is that agents operate on incomplete information, and the gap between what you know and what your AI knows stays wide.

We are building toward closing that gap. Notes you write in nocal, meetings you take, plans you make: all of it should be available to the tools you use to think and execute. MCP is the layer that makes that possible.

More soon.