Snack plugins

AI coding agent plugins for Snack.Game — build, run, and publish multiplayer web games from Claude Code, Codex, and other MCP clients.

The snack plugin bundles the Snack MCP server (scaffold, validate, dev, push, publish, versions, auth) and a skill that teaches agents the Snack workflow.

Claude Code

/plugin marketplace add snackdotgame/snack-plugins
/plugin install snack@snack-game

Codex (CLI, IDE, ChatGPT desktop)

codex plugin marketplace add snackdotgame/snack-plugins
codex plugin add snack

Claude desktop app

Download snack.mcpb from the latest release and double-click it (or Claude Desktop → Settings → Extensions → Install Extension…). Requires Node.js on your machine.

Manual alternative — add to claude_desktop_config.json (Settings → Developer → Edit Config):

{ "mcpServers": { "snack": { "command": "npx", "args": ["-y", "@snack-game/cli", "mcp"] } } }

Just the MCP server

Snack projects scaffolded with npx @snack-game/cli new are pre-wired (.mcp.json for Claude Code, opencode.json for OpenCode). To register the server manually anywhere else:

claude mcp add snack -- npx -y @snack-game/cli mcp
codex mcp add snack -- npx -y @snack-game/cli mcp

OpenCode (opencode.json):

{ "mcp": { "snack": { "type": "local", "command": ["npx", "snack", "mcp"] } } }