Connect Msty Studio to Apple iMessage

Name: Pomeroy
Price: 19 USD

Yes, Msty Studio can read your Messages, both iMessage and text conversations. Pomeroy connects Msty Studio to Messages on your Mac, so it can find a conversation, search your message history, and read a thread when you ask. Pomeroy cannot send messages or replies, and it never asks for Full Disk Access; it only reads.

Download for Mac

Free for 50 actions a week. No account, no card. Or get Msty Studio first.

What can you ask Msty Studio to do in Apple iMessage?

“Find the message with the door code.”
“What did Sam say about the weekend?”
“Read me my latest messages from Mum.”
“Who has messaged me this week?”
“Find the address Alex texted me last month.”
“What was the name of the restaurant in my messages with Jo?”

What Msty Studio can do in Apple iMessage

List recent conversations and who is in them.
Search the text of every message.
Read one conversation's recent messages.

What Pomeroy will not do in Apple iMessage

Send a message or a reply.
Delete anything.
Ask for Full Disk Access. It never does.

How to connect msty studio to apple imessage

Pomeroy lists the assistants it finds on this Mac, so install Msty Studio first if it is not there yet.

1
Download Pomeroy and switch on Apple iMessage.
Open the download, drag Pomeroy into Applications, and open it. Pomeroy opens a setup window listing every app it can connect. There is no macOS prompt for Messages. Instead, a file dialog opens and you hand Pomeroy the one file Messages keeps your conversations in. Pomeroy keeps a read-only bookmark to it and never asks for Full Disk Access.
2
Press Set up beside Msty Studio.
Pomeroy copies the two values. In Msty Studio, open Toolbox, press Add New Tool, choose STDIO / JSON, and fill them in.
3
Paste it into Msty Studio.
Paste the configuration into Msty Studio › Toolbox › Add New Tool › STDIO / JSON. In Msty Studio, open Toolbox › Tools and pomeroy is listed. Ask a new conversation what tools it has. You may need to restart Msty Studio.
4
Ask Msty Studio something.
Try “Find the message with the door code.” and a real answer comes back.

The configuration, in full

Set up writes it for you. The documentation has the exact text, where it goes, and how to check it worked.

Can Msty Studio read my Messages?

Yes. Once you switch Messages on in Pomeroy, Msty Studio can list your recent conversations, search the text of every message, and read one conversation's recent messages.

Can Msty Studio reply to a message?

No. Pomeroy cannot send messages, so it cannot either. It can draft a reply for you to copy into Messages and send yourself.

How does Pomeroy get access to Messages?

You hand it the one file Messages keeps your conversations in, through a normal macOS file dialog. Pomeroy keeps a read-only bookmark to that file and never asks for Full Disk Access. Switch Messages off and the bookmark is all it loses.

Is it safe to give Msty Studio access to iMessage?

It is as safe as pasting the same messages into Msty Studio yourself. Pomeroy reads only the one file you picked, keeps a read-only bookmark to it, and has no tool that can send, so it cannot reply as you or be talked into it. What Msty Studio reads becomes part of your conversation with Msty Studio, the same as text you paste in, so ask about the messages you would be happy to paste.

Is this the same as Anthropic's iMessage plugin?

No. Anthropic's iMessage plugin is for Claude Code: it reads the Messages database directly, needs Full Disk Access for your Terminal, and sends replies through Messages so you can text Msty Studio from your phone. Pomeroy is a separate app, made by Joe Saunderson and not by Anthropic. It reads only the one file you pick, never asks for Full Disk Access, and cannot send anything.

Msty Studio does not show Pomeroy's tools.

Try restarting Msty Studio; its documentation does not say whether it reloads on its own. Then press Set up again in Pomeroy, under Settings › Assistants: every way Pomeroy sets an assistant up is safe to run twice. Pomeroy's menu bar shows whether Msty Studio is connected right now.

Msty Studio with other apps

Apple iMessage with other assistants

Try Msty Studio with Apple iMessage.

Get 50 actions every week. No Pomeroy account or payment card required. Requires macOS 15 or later.