Yes, and for some people it has paid off. Muse can log in to your account, find discounts you are not using, and talk to support in a chat. On some accounts it can also phone the company, wait on hold, and haggle with a person. Users have posted savings from a few hundred to a few thousand dollars a year.

It also gets stopped. Some providers block it as a bot. Verification codes, signatures and bank details need you. Amazon has banned it outright. When that happens the job comes back to you, usually as one short email. That email is where Hemmingway-1 fits.

Checked on September 22, 2026. I have not run Muse myself. It is only available in the US and Canada, for adults. Every dollar figure below is the user’s own report, not verified.

What Muse does when you ask it to lower a bill

Meta’s launch post says Muse “can open a browser, fill out forms, and negotiate on their behalf,” and names “lowering a bill” as an example. There are two routes.

In its browser. Muse runs on a computer in Meta’s cloud with its own browser. You connect the account, or let it log in through a credentials store the model cannot read. It reads your plan, looks for promotions and unused discounts, and can use the provider’s chat support. Peter Yang asked it to “look at my AT&T account and find every discount I’m not using” and, in John Ma’s roundup below, reports $480 a year from an autopay discount.

On the phone. This is the part people post about. Muse dials the company, gets through the phone tree, waits on hold, and talks to the rep. Peter Yang: “Muse can navigate phone trees, wait on hold, and talk to a human customer support rep while representing itself as your agent.”

Calling is a private test as of this week. It works on selected accounts and only to verified US business numbers, according to Runtimewire. Yang’s tip: ask Muse to message Meta and request access. He got it a day later.

Three things it will not do. It declined to type Yang’s bank details into AT&T’s site. It cannot sign for you; a user who had it cancel an insurance policy still had to sign the DocuSign. And it cannot read a verification code sent to your phone.

What people got

All self-reported. Links go to the original posts where I found them; the rest come from John Ma’s roundup, which lists eleven cases with the prompts people used.

  • Peter Yang: more than $800 a year off cable and phone bills, calls included.
  • raunaqbn: Xfinity, $85.30 a month locked for five years, about $5,118. Muse reached a person, hit a verification text it could not read, and patched him into the call.
  • Jason Luongo: two AT&T fiber accounts, $1,920 over 24 months, by phone.
  • AZ Jedi: cheaper auto insurance, $1,800 a year, with a check scheduled every six months.
  • Frank Chien: cancelled a policy by phone, more than $700, and Muse scheduled the follow-up call.
  • WisemanCap: One Medical, itemized bill. “First time they hung up, but it tried again and got it done.”
  • armand: an IKEA return arranged from start to pickup.

Muse keeps an audit trail of what it did. raunaqbn says he could read the transcript of his call afterward.

Where it was stopped

  • Bot blocks. kentienn: “it keeps getting blocked as a bot on xfinity.” Arpit Mehta: the Xfinity login page looped; it worked when he tried from his home network.
  • Steps only you can do. The verification text, a signature, bank details.
  • Hang-ups. One Medical hung up on the first try.
  • Amazon. Since September 21, shoppers using Muse see “Continued access by an unauthorized AI agent violates Amazon’s Conditions of Use.” Amazon says the agent does not identify itself when browsing, per GeekWire. Not a bill, but the same problem: a company can refuse to deal with an agent.
  • Meta’s own warning. “Your Muse can make mistakes or take unexpected actions,” from the help page on approvals. The page on browsing says nothing about captchas or blocked sites.

Whether Muse tells the rep it is an agent is unclear from reports. Yang says it represents itself as your agent. raunaqbn says the rep “had no idea.” I could not find an official line on this.

When it is your turn

Three cases send the job back to you: the company will not deal with an agent, a step needs you, or you do not want to hand Meta this account.

The fastest move is a short written request. Put in the account number, what you pay now and since when, the competing offer or promotion you saw, what you want, and what you will do by a date. Then read it once and send it.

That is the kind of message Hemmingway-1 was built for. Its makers say it was trained on “messages, emails, the awkward note to a colleague, the thing you have been putting off.” Ask it for the email and it returns only the email. You can try it in the browser with no account.

Write a short email to [provider]. Account [number]. My bill went from
[old price] to [new price] in [month]. [Competitor] offers [plan] for
[price]. Ask them to match it, or I will switch on [date]. Polite, firm,
no filler.

Check the numbers before you send. It goes out under your name.

Keep the paperwork for next time

Promotional rates expire, so this comes around again. Keep the bill PDFs, the rate they promised, the call transcript and the email that worked in one folder. Next year the agent drafts from those instead of starting from nothing.

That is what StashBase is for: a local folder with Claude Code, Codex or Antigravity beside the documents and PDFs prepared so they can be searched. We make it.