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Multiplayer Agent

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Make any browser game multiplayer and host it at a share link. No account needed to start.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http multiplayer-agent 'https://api.multiplayeragent.com/mcp?src=registry' --header 'Authorization: <Optional. Bearer <secret key>: the studio secret key, starting sk_, from https://multiplayeragent.com/dashboard/key. Without it, the agent connects the session to an account through a browser sign-in, or builds in an unclaimed studio.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "multiplayer-agent": {
            "type": "http",
            "url": "https://api.multiplayeragent.com/mcp?src=registry",
            "headers": {
                "Authorization": "<Optional. Bearer <secret key>: the studio secret key, starting sk_, from https://multiplayeragent.com/dashboard/key. Without it, the agent connects the session to an account through a browser sign-in, or builds in an unclaimed studio.>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Multiplayer Agent for Claude Code
  2. Install
  3. What it includes
  4. Data and privacy
  5. Links

Multiplayer Agent for Claude Code

Make any browser game multiplayer from Claude Code, and host it at a share link a friend can open. This plugin connects Claude Code to the hosted Multiplayer Agent backend, which provides rooms, shared real-time state, player identity, saved progress, leaderboards and game hosting, so Claude never has to write or run a game server. It also adds a make-it-multiplayer skill that teaches Claude how to design, wire, test and publish a multiplayer game on it.

No account or key is needed to start. Claude asks for your email and opens a page where you sign up or log in (your password is typed on the website, never in the chat), so your games are saved to your own account.

Install

/plugin install multiplayer-agent --marketplace natepac/multiplayer-agent

or

/plugin marketplace add natepac/multiplayer-agent
/plugin install multiplayer-agent@multiplayer-agent

If the tools don't show up straight away, type /reload-plugins. Then ask Claude something like "build me a multiplayer snake game" or "make this game multiplayer".

What it includes

  • MCP server multiplayer-agent at https://api.multiplayeragent.com/mcp (remote, streamable HTTP, no key required).
  • Skill make-it-multiplayer, used automatically when you ask for multiplayer, co-op, a lobby, an invite link, a leaderboard or hosting.

Data and privacy

The plugin sends requests to api.multiplayeragent.com: the game definitions, room settings and game files Claude creates or publishes for you, plus the email you choose to connect. Games you publish are served from *.play.multiplayeragent.com, and players' game state goes to the same backend while they play. See the privacy policy and terms.

Frequently asked questions

What is Multiplayer Agent?

Make any browser game multiplayer and host it at a share link. No account needed to start.

How do I install Multiplayer Agent?

It runs as a remote server. In Claude Code: claude mcp add --transport http multiplayer-agent 'https://api.multiplayeragent.com/mcp?src=registry' --header 'Authorization: <Optional. Bearer <secret key>: the studio secret key, starting sk_, from https://multiplayeragent.com/dashboard/key. Without it, the agent connects the session to an account through a browser sign-in, or builds in an unclaimed studio.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Multiplayer Agent need an API key?

Yes. It expects Authorization, which you set in its configuration.

Is Multiplayer Agent open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Multiplayer Agent?

It is published by natepac. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.