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PopNx MCPMCP servers for people who use AI · explained in plain words

Agentbridge

by SeanFDZversion 1.0.2i★ –iRuns on your computer
Registry nameio.github.SeanFDZ/agentbridge

Install

Overview

Description from the maker (original English)

Control Classic Mac OS (System 7-9) from AI agents via shared folder protocol.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • The registry lists no key to fill in.

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "agentbridge": {
      "command": "npx",
      "args": [
        "-y",
        "classic-mac-mcp"
      ]
    }
  }
}

Run this in your terminal

claude mcp add agentbridge -- npx -y classic-mac-mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "agentbridge": {
      "command": "npx",
      "args": [
        "-y",
        "classic-mac-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "agentbridge": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "classic-mac-mcp"
      ]
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account SeanFDZ, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

  • More stars than 0% of the other 32505 servers in this category
  • Published to the registry more recently than 6% of the other 32505 servers in this category
  • Basic checks equal to or better than 100% of the other 32505 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Agentbridge safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.2) reached the registry 7 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, topo^alpin

Alternatives

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Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Runs on your computer★ 440MITUpdated 14 months ago
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Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated yesterday
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topo^alpin

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

AgentBridge

Let AI talk to your Classic Mac.

AgentBridge is a native Classic Mac OS application that lets AI agents (like Claude) interact with Mac OS 7–9 through structured commands and responses. It works on real hardware and emulators — no modifications to your Mac required.

Drop AgentBridge into a shared folder, launch it on your Mac, and an AI agent can list windows, open apps, type text, read the clipboard, browse files, and more — all through a simple text-based protocol.

How It Works

┌──────────────────────┐

│ Claude / AI Agent │ │ │ │ │ MCP Protocol │ │ │ │ │ MCP Server (Node) │ │ │ │ │ Shared Folder I/O │ └────────┬─────────────┘ │ reads/writes text files │ ┌────┴──────────────────────────┐ │ Shared Volume (NAS / AFP / │ │ SMB / emulator extfs) │ │ │ │ AgentBridge-MyMac/ │ │ ├── inbox/ ← commands in │ │ ├── outbox/ ← responses out │ │ ├── assets/ ← file staging │ │ └── heartbeat │ └────┬──────────────────────────┘ │ ┌────────┴─────────────────────────┐ │ Classic Mac OS 7 / 8 / 9 │ │ │ │ AgentBridge.app │ │ - Polls inbox for commands │ │ - Executes via Mac Toolbox │ │ - Writes responses to outbox │ │ - Heartbeat every 2 seconds │ └──────────────────────────────────┘

The transport is just a folder. How that folder is shared between the AI and the Mac is up to you:

  • NAS/file server (AFP or SMB) — multiple Macs and your modern computer all mount the same share
  • Emulator shared folder — BasiliskII and SheepShaver both support host directory sharing
  • Any other shared filesystem — if both sides can read and write files, it works

No SSH. No special drivers. No modifications to your Mac's system. AgentBridge is a regular application — launch it, quit it, done.

MCP Tools Reference

The MCP server exposes these tools to AI agents. If the fleet has only one target, the target parameter is optional on all tools.

System & Status

`classic_mac_list_targets` List all configured Classic Mac targets and their status (heartbeat alive/dead). No parameters.

`classic_mac_ping` Health check — returns pong if AgentBridge is responding.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_heartbeat` Read the heartbeat file — shows uptime, front app, free memory, timestamp.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_get_about` System information — OS version, machine type, RAM, free memory, uptime.

ParameterRequiredDescription
targetNoTarget ID or alias
Windows & Processes

`classic_mac_list_windows` Enumerate all visible windows across all applications. Returns window index, title, bounds (left,top,right,bottom), and front/back layer.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_get_front_window` Get details about the frontmost window — title, bounds, owning app.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_list_processes` List running applications with name, creator code, PID, and memory partition.

ParameterRequiredDescription
targetNoTarget ID or alias
Menus

`classic_mac_list_menus` List the menu bar entries for the frontmost application.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_get_menu_items` Get items within a specific menu by name.

ParameterRequiredDescription
targetNoTarget ID or alias
menuYesMenu title (e.g. "File", "Edit")

`classic_mac_menu_select` Activate a menu item by name. Works for items with keyboard shortcuts.

ParameterRequiredDescription
targetNoTarget ID or alias
menuYesMenu title
itemYesMenu item name
Mouse & Keyboard

`classic_mac_click` Click at screen coordinates.

ParameterRequiredDescription
targetNoTarget ID or alias
xYesX coordinate (pixels from left)
yYesY coordinate (pixels from top)
clicksNoNumber of clicks (default 1, use 2 for double-click)

`classic_mac_mouse_move` Move the cursor without clicking.

ParameterRequiredDescription
targetNoTarget ID or alias
xYesX coordinate
yYesY coordinate

`classic_mac_mouse_drag` Click and drag from one point to another.

ParameterRequiredDescription
targetNoTarget ID or alias
x1YesStart X
y1YesStart Y
x2YesEnd X
y2YesEnd Y

`classic_mac_type_text` Type a string of text into the frontmost application.

ParameterRequiredDescription
targetNoTarget ID or alias
textYesText to type

`classic_mac_key_press` Press a single key with optional modifiers.

ParameterRequiredDescription
targetNoTarget ID or alias
keyYesKey name: single character, or return, enter, tab, space, delete, escape, left, right, up, down, home, end, pageup, pagedown, f1–f5
modifiersNoComma-separated: cmd, opt, shift, ctrl (e.g. "cmd,shift")
Clipboard

`classic_mac_get_clipboard` Read the current clipboard text contents.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_set_clipboard` Set the clipboard text contents.

ParameterRequiredDescription
targetNoTarget ID or alias
textYesText to place on clipboard
Application Control

`classic_mac_launch_app` Launch an application by HFS path or creator code.

ParameterRequiredDescription
targetNoTarget ID or alias
pathNo*HFS path (e.g. "Macintosh HD:Applications:SimpleText")
creatorNo*4-character creator code (e.g. "ttxt")

*One of path or creator is required.

`classic_mac_activate_app` Bring a running application to the front.

ParameterRequiredDescription
targetNoTarget ID or alias
nameYesApplication name

`classic_mac_quit_app` Send a quit Apple Event to a running application.

ParameterRequiredDescription
targetNoTarget ID or alias
nameYesApplication name

`classic_mac_send_appleevent` Send a generic Apple Event to a running application.

ParameterRequiredDescription
targetNoTarget ID or alias
appYesTarget app name or 4-char creator code
eventYesEvent type: oapp, quit
Files & Volumes

`classic_mac_get_volumes` List all mounted volumes with name, free space, and total size.

ParameterRequiredDescription
targetNoTarget ID or alias

`classic_mac_list_folder` List contents of a folder by HFS path. Returns name, type code, creator code, size, and whether each item is a folder.

ParameterRequiredDescription
targetNoTarget ID or alias
pathYesHFS path (e.g. "Macintosh HD:System Folder:")

Compatibility

EnvironmentArchitectureOS VersionsStatus
68k Macs68kSystem 7.0–8.1✅ Tested on System 7.6.1
PowerPC MacsPowerPCMac OS 8.5–9.2.2Builds, untested
BasiliskII68kSystem 7.0–8.1✅ Tested on System 7.6.1
SheepShaverPowerPCMac OS 8.5–9.2.2Builds, untested

AgentBridge requires System 7.0 or later (for Apple Events support).

Quick Start

Pre-built Binaries

Download from the Releases page:

  • `AgentBridge-68k.bin` — MacBinary for 68k Macs (System 7–8.1)
  • `AgentBridge-68k.dsk` — HFS disk image for 68k Macs (System 7–8.1)
  • `AgentBridge-ppc.bin` — MacBinary for PowerPC Macs (OS 8.5–9.2.2)
  • `AgentBridge-ppc.dsk` — HFS disk image for PowerPC Macs (OS 8.5–9.2.2)
Setup
  1. Create a shared folder accessible to both your Mac and your modern computer. This can be a NAS share, an emulator's host directory, or any shared filesystem.
  1. Create the directory structure inside the shared folder:
   AgentBridge/

└── AgentBridge-YourMacName/ ├── inbox/ ├── outbox/ └── assets/

  1. Copy AgentBridge into the folder alongside inbox/outbox/assets.
  1. Launch AgentBridge on the Classic Mac. It will automatically find its folder and start polling for commands.
  1. Send a test command from your modern computer:
   printf "BRIDGE 1.0.1\rSEQ 00001\rCMD ping\rTS 20260308T170000\r---\r" > /path/to/shared/AgentBridge-YourMacName/inbox/C00001.msg
  1. Read the response:
   cat /path/to/shared/AgentBridge-YourMacName/outbox/R00001.msg | tr '\r' '\n'

You should see RESULT pong and STATUS ok.

Multiple Macs

Each Mac gets its own subfolder with its own copy of AgentBridge:

NAS Share/

└── AgentBridge/ ├── AgentBridge-SE30/ ← Mac SE/30 running System 7 │ ├── AgentBridge (app) │ ├── inbox/ │ ├── outbox/ │ └── assets/ ├── AgentBridge-G4/ ← Power Mac G4 running OS 9 │ ├── AgentBridge (app) │ ├── inbox/ │ ├── outbox/ │ └── assets/ └── AgentBridge-BasiliskII/ ← Emulator ├── AgentBridge (app) ├── inbox/ ├── outbox/ └── assets/

AgentBridge uses its own launch location as its working directory — no configuration needed.

MCP Server

The MCP server exposes AgentBridge commands as tools for AI agents like Claude. It's a Node.js TypeScript server that communicates via stdio (standard MCP transport).

Install via npm
npm install -g classic-mac-mcp

Or run directly with npx (no install needed):

npx -y classic-mac-mcp --config /path/to/fleet.json
Install from source
git clone https://github.com/SeanFDZ/agentbridge.git

cd agentbridge npm install npm run build

Configuration

Create a fleet.json file to point at your shared folders:

{

"fleet": [ { "id": "my-classic-mac", "alias": "Classic Mac", "arch": "68k", "os_version": "7.6.1", "shared_folder": "/Volumes/NASShare/AgentBridge/AgentBridge-MyMac" } ] }

Claude Desktop

Add to

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