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3-line summary

• Meta's AI agent “Muse” is, as an app, a companion you can ask as naturally as sending someone a message; it works in the background and comes back only when needed. It has been available in Japan since October 23 on iOS, Android, and muse.ai
• The most interesting thing is Spaces, which launched on November 6. If you describe what you want in a chat—“I want something like this”—Muse builds a your own mini-app, such as a tracker, planner, or quiz game. You can keep refining it through conversation as you use it, and it continues to update itself automatically based on data from connected apps
• Spaces is available in every region where Muse is available, so you can use it from Japan too. Meanwhile, Muse Voice for voice and video calls is currently available only in the United States

The two-month timeline since Muse launched (the announcement, its launch in Japan, and the issues) was covered in my previous article.

In this article, I'll look at what you can do with the regular “Muse app,” drawing on the official announcement and news reports. The focus is Spaces.

The basics of the Muse app: Ask, and it gets it done in the background

Muse is used almost exactly like a chat app. You write and send what you want it to do. The difference is what happens afterward: Muse actually carries out the work. Based on the official announcement, its behavior as an app can be summarized as follows:

• One-off request: Sending emails, making travel reservations, etc.
• Discussing a goal: Tell it about a major goal, and it helps you make a plan, coordinates time and resources, and then proceeds autonomously with the work
• Browser operation: Opens websites and fills in forms. The English-language announcement says it “also negotiates”
• Background execution: Continues working even if you close the app. You are notified when the situation changes or when approval is needed, such as before it sends an email or makes a purchase
• Memory: Remembers important things and proactively makes suggestions even when you haven't asked it to
• Audit log: You can review everything Muse has done and everything it plans to do next

Rather than an “AI that answers questions,” it is positioned as an “AI you can leave tasks with.” According to CNBC, the app also has a feed that streams updates from connected Facebook and Instagram accounts, as well as a feature for generating ideas. The WhatsApp version does not have these app features.

What it connects to: Connectors

The range of what Muse can do is, for the most part, determined by which services it connects to. The following services were mentioned in the announcement of the Japanese version.

Category	Service
Already available	Gmail, Google Calendar, Instagram
Already available (globally)	Stripe, Shopify, Trip.com, Agoda, Klook
Integration in progress for Japan	Mercari, Money Forward ME, Ticket Pia

For Mercari, Money Forward ME, and Ticket Pia, the announcement says they will “continue working on the integrations,” and does not go so far as to say they will be available at launch. Users can choose the apps to connect and the scope of their permissions—whether Muse will only read their email or can also send messages—and can disconnect them at any time.

Spaces: Create your own mini-app through conversation

Now for the main event. On November 6, Meta announced Spaces.

According to the official description, a Space is “a personal experience you can create inside Muse simply by describing your idea.” Examples include managing holiday gifts, a word game you can play every day, and a planning board for your next DIY project. It can be practical, or it can be just for fun.

How to create it: Explain it, then refine it as you use it

The process is simple.

1. Describe what you want to create to Muse in a chat
2. Muse sets up a tracker, planner, project board, or similar tool
3. As you use it, make changes through conversation, such as “This is missing,” “I want to change the way it looks,” or “I want to change how it works”

The official announcement says the initial idea is “no more than a starting point.” Not having to complete everything in one go is reassuring.

You can decide where it lives and when it runs

The Space you create becomes part of the Muse app itself.

• Place it in the sidebar
• Promote it to a main tab
• Hide what you don't need right now
• Schedule when to display it

The last example given by the official announcement is this: display the weekly schedule prominently on weekdays, then switch to the weekend schedule once Saturday arrives. You can restructure the app's screen layout itself to match your own life rhythm. It's a subtle feature, but this is where it most feels like "your own app."

Stay up to date automatically

A Space doesn't remain frozen at the data from when it was created. It uses data from connected apps to keep updating itself in the background. In the official wording, new live-event dates, price changes, savings progress, and more are reflected without you even having to ask.

You can also check off items, write notes, and edit things directly within a Space. Everything remains as it is the next time you open it. Chat replies scroll past and disappear, but a Space becomes "a screen that stays."

The nine examples of "things you can create" cited by the official announcement

The official announcement lists nine examples of things you can create. It's fun just to look at them.

Example	Contents
Shopping hub	Gift ideas, a wish list created from your Instagram saves, and Marketplace listings and messages from prospective buyers—all on one screen
School dashboard	Pick out child-related events from school emails and add them to your calendar
Music tracker	New releases and live-event information for your favorite artists
Wedding planner	RSVP list, vendor invoices, and to-dos
Trivia game	Quizzes about your favorite movies, music, and sports teams
Podcast studio	Episode ideas, research, and scripts all in one place
Order tracker	For small businesses. New orders, customer messages, and items to ship today
Client hub	For freelancers. Projects, deadlines, invoices
Travel planner	Flights, hotels, reservations, and a day-by-day itinerary

Finally, it says, “If you have half-baked ideas sleeping in your notes app, spreadsheets you’ve been meaning to organize, or a hobby you want to explore more deeply, you can probably turn them into a Space.”

Zuckerberg also posted on X that he had used Spaces to create a BBQ game, an event management screen, and a home-control dashboard (according to TechCrunch).

What’s Fun About It

There are three things that make Spaces interesting to look at.

1. There is no boundary between “making an app” and “using an app.” Until now, it was possible to have AI write code and create a small app. However, you still had to figure out how to set up somewhere to run it, import the data, and establish a mechanism for updating it. According to the official description, all of that is contained within Muse in Spaces. What you create immediately becomes an app tab, and the data comes in automatically through connectors.

2. Fixing it is also a conversation. If the official description is accurate, you should be able to say, “I don’t need this column” or “Sort them by the nearest deadline,” and it will make the changes. Since the premise is that you develop it while using it, the initial instructions can be rough.

3. It can be playful. It is not solely practical; the official examples include word games and trivia quizzes. A screen that gives you one quiz a day in your favorite genre is something you will not easily find among commercial apps.

Spaces You Could Create in Japan

From here on, let’s consider Spaces that could be created, assuming the use of connectors available in Japan, such as Gmail, Google Calendar, and Instagram. These are all ideas adapted from the official examples for use in Japan, and have not been tested.

• Subscription and Billing Watchdog: Collect billing emails and renewal notifications sent to Gmail, and list the service name, price, and next renewal date. Put “things renewing next week” at the top.
• School and Nursery Event Board: A Japanese version of the official school dashboard. Extract events and items to bring from newsletter emails and add them to Google Calendar.
• Destination List for Saved Instagram Posts: Organize saved posts about cafés and travel destinations into a board for each destination, with a map if possible. If connected to Trip.com or Agoda, you can also check hotel prices.
• Favorite Artists’ Schedule Tracker: A Japanese version of the official music tracker. If it could integrate with Ticket Pia, it would likely be possible to gather release dates and lottery application deadlines on a single screen.
• One Morning Question Every Day: Present one question every day in your favorite genre and record the percentage of correct answers.

For example, you could phrase your request like this: “Create a list of active subscriptions from the billing emails in Gmail. Make the price and next renewal date visible, and sort them by the soonest renewal date.”It seems best to convey at once what you want to collect, what you want to see, and how you want it arranged. After that, you can simply keep making changes as you use it.

Voice and Avatars: Muse Voice (U.S. only)

On November 5,Muse Voice, for voice and video calls with Muse, became available to all users in the United States.

According to the official announcement, in the Muse app for mobile, web, and Mac, you start talking by selecting the phone icon in the upper-right corner.

• Interjecting mid-conversation
• You can choose the display from “Voice only,” “Avatar beside the conversation,” or “Full-screen avatar.”
• There are hundreds of voices to choose from, and you can change them at any time to suit your mood. The official announcement gives examples such as “New York-style energy” and “a pirate-like feel.”
• Examples of uses include getting general travel advice, as well as practicing for interviews, presentations, and pitches.

According to TechCrunch, the avatar is nicknamed Jolly and can be made to look like a person, an animal, or something else. Voice conversations are also expected to become available in the near future on smart glasses and the dedicated Muse Charm device.

The Japanese version of the announcement lists the availability in Japan of the advanced voice mode and Muse Realtime Avatar (English only) as “to be announced separately.” The official announcement is also worded as “starting with the United States,” so it will likely be some time before these become available from Japan.

Things to Know Before Using It

• Pricing: The Japanese version of the announcement says that “many basic features are free” and that subscription plans are also available. No prices in yen are listed. In the United States, plans at $20 per month and $100 per month have been reported.
• Use for AI Training: You can opt out of having your interactions with Muse used to train Meta’s AI. If you are concerned about this, check the settings first.
• Advertising: Data from conversations and data within VMs are not shared with Meta’s advertising system.
• Sharing: There is not yet a feature for sharing Spaces with other people (the official wording is that it is “under consideration”). Separately, the feature for sharing things created with Muse via links was temporarily suspended in October after it was reported that shared-link titles could be enumerated via DNS, and it resumed on October 22 after being fixed. It is best to assume that shared links may contain information, including the title, that you would not want others to see. The background was covered in the previous article.

Summary

• The Muse app is an agent that works on tasks in the background when you entrust them to it. In Japan, it connects with services such as Gmail, Google Calendar, and Instagram, and is also working on integrations with Mercari, Money Forward ME, and Ticket Pia.
• Spaces is a feature for creating your own mini app through conversation, refining it as you use it, and having it update automatically with connected data. You can even choose where it appears and the hours during which it is displayed, allowing you to reconfigure the app itself for your own use.
• Even just adapting the nine official examples—such as gift management, a school dashboard, and a trivia game—for Japan gives you virtually endless possibilities for what you could create.The audio version of Muse Voice is currently available only in the United States, so in Japan, it would probably be most fun to try Spaces first for now.

The same content has also been posted on Zenn.