AGENT HUB MCP SETUP

Connect the client, bridge, and tool—on purpose.

Pick your AI client, use the matching transport, and verify one safe action before expanding access. Every path below says whether the client or bridge is first-party, independent, or only an example.

Choose a setup path Security notes

stdio

The client launches a local process and exchanges MCP messages through its input and output streams.

Streamable HTTP / HTTP

The client connects to a compatible remote endpoint. Authentication and server trust matter.

Legacy SSE

Claude Code treats SSE as deprecated. Prefer the current HTTP transport for new remote setups.

01OPENAI · FIRST-PARTY CLIENT

Codex

Codex supports local stdio servers and remote Streamable HTTP servers. Its CLI and IDE extension use the same MCP configuration.

Open the shared config

On Windows, use $env:USERPROFILE\.codex\config.toml. Back it up before editing.

Add one server

Use a local command for stdio or a URL for Streamable HTTP. Keep names short and unique.

Restart and inspect

Restart the active Codex surface, confirm the server appears, and begin with a read-only tool call.

config.toml · local stdio

[mcp_servers.my_local_server]
command = "npx"
args = ["-y", "@publisher/server-package"]

config.toml · Streamable HTTP

[mcp_servers.my_remote_server]
url = "https://mcp.example.com/mcp"

Example placeholders: replace the package and URL only with values supplied by a server publisher you trust.

02OPENAI · FIRST-PARTY DESKTOP CLIENT

ChatGPT desktop

The ChatGPT desktop app supports stdio and Streamable HTTP MCP servers. On the same host, it shares MCP configuration with Codex CLI and the Codex IDE extension.

1
Open Settings
In the ChatGPT desktop app, open MCP servers.
2
Add the server
Choose Add server, then enter its stdio command or Streamable HTTP URL.
3
Restart the app
Fully restart ChatGPT so the desktop host reloads the shared MCP configuration.
4
Verify with /mcp
Open a chat, enter /mcp, and confirm the intended server and tools are visible.

ChatGPT web is a separate connection surface.

The browser version does not read your local desktop or Codex configuration. ChatGPT web integrations use plugins and remote tools, so a local stdio bridge must run through the desktop app or another supported local client.

03ANTHROPIC · FIRST-PARTY CLIENT

Claude Code

Register servers from the command line. Use stdio for local processes and HTTP for new remote servers; SSE is deprecated.

PowerShell · local stdio

claude mcp add --transport stdio my-local-server -- npx -y @publisher/server-package

PowerShell · remote HTTP

claude mcp add --transport http my-remote-server https://mcp.example.com/mcp

CHECK

Run claude mcp list after registration. If a server exits immediately, run its command by itself and read the local error before changing the client config.

04ANTHROPIC · FIRST-PARTY CLIENT

Claude Desktop

On Windows, local stdio servers are configured in %APPDATA%\Claude\claude_desktop_config.json. JSON requires doubled backslashes inside Windows paths.

claude_desktop_config.json · local stdio

{
  "mcpServers": {
    "my-local-server": {
      "command": "npx",
      "args": ["-y", "@publisher/server-package"]
    }
  }
}

1Close Claude Desktop completely.
2Edit valid JSON—one missing comma can stop every server from loading.
3Start Claude Desktop again and review the tools it exposes.

05UNITY · OFFICIAL BRIDGE

Unity 6+ official MCP relay

Supported Unity MCP tooling installs a Windows relay at %USERPROFILE%\.unity\relay\relay_win.exe. It runs with --mcp, and Unity asks you to approve the first connection.

CHECK THE RELAY

Confirm the executable exists.

If the check returns False, update the supported Unity 6 setup and complete Unity's current official MCP installation flow before configuring a client.

PowerShell · path check

Test-Path "$env:USERPROFILE\.unity\relay\relay_win.exe"

FIRST CONNECTION

Approval happens inside Unity.

Keep the intended project open, connect from your configured AI client, and approve the prompt only when the displayed client matches. Do not launch the relay as a standalone test: it is a stdio server and will wait for client messages.

AI client→Unity relay→Approve in editor

Register Unity in your client

Codex · config.toml (replace YOUR_NAME)

[mcp_servers.unity]
command = 'C:\Users\YOUR_NAME\.unity\relay\relay_win.exe'
args = ["--mcp"]

Claude Code · PowerShell

claude mcp add --transport stdio unity -- "$env:USERPROFILE\.unity\relay\relay_win.exe" --mcp

Claude Desktop · JSON (replace YOUR_NAME)

{
  "mcpServers": {
    "unity": {
      "command": "C:\\Users\\YOUR_NAME\\.unity\\relay\\relay_win.exe",
      "args": ["--mcp"]
    }
  }
}

Availability: the relay path and approval flow apply to supported Unity 6+ MCP installations. Older or unsupported editor versions may not include it.

06AGENT HUB · INDEPENDENT BRIDGE

Roblox Studio local bridge

This path uses the existing %LOCALAPPDATA%\Roblox\mcp.bat bridge. It is independent software and is not provided or endorsed by Roblox Corporation.

1 · CONFIRM INSTALLATION

Check the batch file before registering it.

Open and review the file if it came from anywhere other than your own Agent Hub installation.

PowerShell · path check

Test-Path "$env:LOCALAPPDATA\Roblox\mcp.bat"

Codex · config.toml

[mcp_servers.roblox_studio]
command = "cmd.exe"
args = ["/c", "cd /d %LOCALAPPDATA%\\Roblox && .\\mcp.bat"]

Claude Code · PowerShell

claude mcp add --transport stdio roblox-studio -- cmd.exe /c "cd /d %LOCALAPPDATA%\Roblox && .\mcp.bat"

Claude Desktop · JSON

{
  "mcpServers": {
    "roblox-studio": {
      "command": "cmd.exe",
      "args": ["/c", "cd /d %LOCALAPPDATA%\\Roblox && .\\mcp.bat"]
    }
  }
}

NOTE

Keep Studio open only when you intend to use the bridge. Preserve Agent Hub's exclusive-writer rule when multiple agents share the same project.

07SERVER-SPECIFIC

Other compatible MCP servers

A protocol match is necessary, but it is not a security review. The server publisher owns its install command, permissions, updates, and data handling.

LOCAL

Use stdio

Your client starts a trusted executable or package on the same device. Confirm the exact command and working directory.

REMOTE

Use current HTTP

Your client connects to a URL. Confirm HTTPS, authentication, tenancy, logging, and the server's data policy.

UNKNOWN

Stop and inspect

Do not improvise a command from a package name. Find the publisher's current instructions and verify the source first.

Agent Hub Desktop scope

This guide can help you configure compatible clients, but the current Windows app does not claim native lifecycle management, health checks, or permission control for every arbitrary MCP server.

08FINAL CHECK

Verify before the first real task

A server showing “connected” proves transport, not safety. Test the smallest useful capability and keep the result observable.

Confirm identity

Client name, server name, executable or URL, and target project are exactly what you intended.

Start read-only

List available tools or inspect project metadata before allowing any edit, delete, publish, or shell action.

Protect secrets

Keep tokens in the client's supported secret or environment mechanism. Never paste them into this website or a support ticket.

Know how to revoke

Remove the config entry, stop the local relay, revoke remote credentials, and close editor approval when the bridge is no longer needed.

Get setup help Back to Agent Hub

OFFICIAL REFERENCES

Verify against the current source.

Client menus, package versions, and availability can change. These first-party references are the source of truth.

OpenAIChatGPT & Codex MCP AnthropicClaude Code MCP AnthropicClaude Desktop extensions UnityOfficial Unity MCP MCPOfficial server registry