Connect Pomeroy to goose

goose is Block’s open-source agent, and it works with Pomeroy. Pomeroy writes the configuration and you paste it in. goose can then read the apps you switched on, and no others.

What Set up does. Pomeroy puts an extensions entry on your clipboard. Paste it into goose’s config.yaml, keeping any extensions already there.

Set up

Install Pomeroy and switch on your apps

Download Pomeroy, drag it into Applications and open it. Switch on the apps you want goose to reach. Everything starts off, and macOS asks you to approve each app as you switch it on. The full walkthrough.

Install goose, if you have not

Pomeroy lists the assistants it finds on this Mac, so install goose first if it is not there. Returning to Pomeroy’s window re-checks.

Press Set up

In Pomeroy’s Assistants pane, find goose and press Set up. It is safe to press any number of times. It writes the same thing every time, and it never disturbs another server already there.

Pick it up

Start a new goose session. A session already running keeps the tool list it started with.

Ask something

In goose, ask what is on your calendar today. The answer comes from your Mac.

The configuration

Set up puts this on your clipboard. It is here so you can see what Pomeroy adds, check it by hand, or set up a second Mac without opening the panel. Goes in ~/.config/goose/config.yaml:

extensions:
  pomeroy:
    name: Pomeroy
    type: stdio
    cmd: /Applications/Pomeroy.app/Contents/MacOS/pomeroy-mcp
    args: []
    enabled: true
    timeout: 300

The command is a single absolute path with no arguments, and it lives inside Pomeroy’s app bundle, so an update never changes it. What the pipe is.

Over the local endpoint

goose can also reach Pomeroy over the HTTP endpoint instead of the pipe. Use it only for a copy running somewhere that cannot start a program on this Mac, such as a container or a remote workspace. Switch the local address on in Pomeroy’s Connections pane first. Goes in ~/.config/goose/config.yaml:

extensions:
  pomeroy:
    name: Pomeroy
    type: streamable_http
    uri: http://127.0.0.1:13579/mcp
    headers:
      Authorization: "Bearer <the key Pomeroy generates>"
    enabled: true
    timeout: 300

Pomeroy writes the real token in place of the placeholder when it can reach this assistant’s settings. Otherwise you can read the token under Connections.

How to check it worked

In goose, the extensions list (Settings › Extensions in the desktop app, or goose configure in the Terminal) shows Pomeroy enabled. If the tools are missing, the cause is almost always that the assistant has not re-read its server list. Troubleshooting.

What it can reach

Only the apps you switched on, and only through the tools Pomeroy publishes. goose cannot send mail, send a message, delete anything or edit a contact, because no tool does those things.

What Pomeroy can do

Ten apps, 27 tools, and every refusal.

Permissions

What each toggle grants, and what macOS asks you for.

Other assistants

All 24, and what to do if yours is not listed.