What Meta Muse cannot do natively
Meta Muse does a lot on its own. It reads and writes your email, manages your calendar, browses the web and buys things, and since 16 September 2026 it can phone US businesses in a beta. What it cannot do is anything that needs a service it has no connection to. For those you add a connector, and if the service is not in Meta's directory you can ask Muse to build one.
This is a dated list of the gaps as of 21 September 2026. We sell three rows on it. The rest is about things we do not sell, because a list that only mentions our own product is not a list.
This page goes stale fast. In nine days Muse added phone calls and opened a connector platform. Check the date before you trust a row.
What Muse already does on its own
No connector needed for email (Gmail, Outlook), calendar, web browsing, research, form filling, OpenTable bookings or Ticketmaster. Shopping and checkout are built in, done by browsing the open web and paying with Stripe Link or a single-use card. And since 16 September 2026, in beta, Muse places phone calls to US businesses.
If you were about to go looking for a product that does one of those, stop.
The gaps
| What you want | Can Muse do it alone? | Does a connector fix it? |
|---|---|---|
| Mail a physical letter | No | Yes. We found no built-in mail connector. Ours adds one |
| Mail a postcard | No | Yes, same connector |
| Send certified mail | No | Yes, same connector |
| Print and mail a photo | No | Yes, as a postcard |
| Send a fax | No | Yes. Our fax connector adds it |
| Book a salon, barber or clinic | Partly. OpenTable is built in and Muse can phone a business in beta | Yes for businesses on Square. Our booking connector puts the slot straight in their calendar |
| Get a document e-signed | No | Probably, eventually. E-signature providers gate access behind partner programmes rather than open API keys |
| Give your agent its own email address | Not really. Gmail and Outlook connect your inbox | Yes. At least one service does this |
| Remember what you told it last month | No, not for anything resembling knowledge work | No. This is the model's design |
| Touch files on your own computer | No. Muse runs in its own cloud machine | No |
| Run a different AI model | No | No |
| Work outside the US | No. US only, 18+ | No |
| Read a login code out of your email | Discouraged. Meta filters one-time codes out of its own email connector | No |
The three honest categories
Things Meta fills in itself. The agent talking to other software on your behalf: email, calendar, shopping, browsing, now phone calls. Muse went from launch to placing calls in nine days. Waiting for a third-party product in this shape means being overtaken.
Things that need real-world rails. Paper, ink, envelopes, postage, a delivery van, a fax line, a signature, a booking in somebody's calendar. These need a vendor relationship and a per-item cost, which is not what platforms build. Physical mail sits here, with faxes, printed photos and package returns.
Things nothing fixes. No memory of your documents, no access to your own computer, no working outside the US. Those are decisions about what Muse is.
How a connector fixes a gap
Directory connectors are listed under Settings, then Connectors. Meta reviews these before they appear. You switch them on.
Custom connectors you add yourself. Point Muse at a service's documentation and it writes the integration in its own cloud computer, then saves it as a reusable skill. Meta is direct about the trade: it does not review custom connectors, and it tells you to grant access with caution. We explain that bargain in full in how custom connectors work, and how safe they are.
Then Muse asks for a key, which goes into its Secure Credentials Store rather than the chat, and asks permission to talk to that domain.
What we sell
No Errands is the mail, fax and booking rows. Muse writes the letter, we print and post it. A one-page black-and-white letter is $2.49, extra pages $0.25, color adds $0.50, certified adds $7.50, a postcard is $1.49, and a fax is $1.49 for the first page. Address checks and estimates are free, and booking an appointment is free for the person booking. Credits are bought as $2.49 for a single letter, or $10.00 for $12.50 of credit (one free letter), $25.00 for $32.50 of credit (three free letters) and $50.00 for $67.50 of credit (seven free letters); every pack credits more than it costs, and it is all separate from what you pay Meta.
United States addresses only. Muse asks before it sends, showing the recipient, the content and the price. Custom connectors are not reviewed by Meta, ours included.
What we could not verify
Whether Meta plans to add any of these itself. Whether any connector submission has ever been approved, since we found no public report as of 21 September 2026. And the full directory list, because Meta has not published one. Our reconstruction is at the Meta Muse connectors list.
Out of date? Email support@noerrands.com. We fix it and date the fix.
The prompt that closes the mail, fax and booking rows
Copy the whole block and paste it into Muse as one message, after getting a key at https://noerrands.com/get-key.
Build a custom connector for No Errands. One API key covers three services:
printed mail (letters and postcards), fax, and appointment booking.
1. Read these three connector briefs and follow them exactly:
https://noerrands.com/connectors/muse.md
https://noerrands.com/connectors/fax/muse.md
https://noerrands.com/connectors/booking/muse.md
2. Store my API key in the Secure Credentials Store as NOERRANDS_API_KEY.
The same key works for all three. Never print, log, echo, or repeat it,
not even partially.
Send it as the header: Authorization: Bearer <NOERRANDS_API_KEY>
3. Prefer the MCP endpoints (streamable HTTP):
https://api.noerrands.com/c/mail/mcp
https://api.noerrands.com/c/fax/mcp
https://api.noerrands.com/c/booking/mcp
If you use the REST APIs instead, each brief links its OpenAPI document.
4. Before you mail anything, fax anything, or book anything, show me exactly
what will happen, what it costs, and who it goes to, and wait for my
explicit approval. Never act without asking me first.
5. Save this as a reusable skill called "Mail, fax and bookings".
Plain text version: /muse-prompt.txt. Step-by-step versions of the same thing are in the how-to library.