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Multiplayer Agent

Multiplayer Agent

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About Multiplayer Agent

Multiplayer Agent is a Claude Code plugin for turning browser games into multiplayer games and publishing them at share links. Its hosted backend handles rooms, real-time state, player identity, progress, leaderboards, and hosting without requiring Claude to run a game server.

Key features

  1. 01Browser game multiplayer support
  2. 02Hosted rooms and real-time state
  3. 03Player identity and saved progress
  4. 04Leaderboards and game hosting
  5. 05make-it-multiplayer skill

Use cases

  1. 01Adding co-op or lobbies to a browser game
  2. 02Publishing a game friends can open by link
  3. 03Building leaderboards and saved game progress

MCP support

It includes the remote MCP server multiplayer-agent at https://api.multiplayeragent.com/mcp, using Streamable HTTP without a key. The server provides the hosted game services used by the plugin.

Configuration

Remote servers need no local install. Pick your client, then copy the config or install in one click.

Endpointhttps://api.multiplayeragent.com/mcp?src=registry
Copy install command
Claude CodeTerminal
Cursor.cursor/mcp.json
VS Code.vscode/mcp.json
Claude Desktopclaude_desktop_config.json
Windsurf~/.codeium/windsurf/mcp_config.json

Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.

All endpoints
Streamable HTTPhttps://api.multiplayeragent.com/mcp?src=registryAuth required

Tools

Details

From the project README

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

Type these in Claude Code:

/plugin marketplace add multiplayeragent/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.

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