AI Plugin Index
Summer Engine
CommunityMCP server by summerengine · updated · ★ 84 · 3.7k downloads a week
The game engine built for AI. Any agent makes a multiplayer game and publishes it. Summer Engine is a community project by summerengine, not verified by a company domain.
Last commit 4 days ago
MIT: permissive, fine for commercial use
Clear description, published package or server URL, 84 stars, original repository
No risky patterns in the files we checked
Install Summer Engine
Built from the published package, never by AIclaude mcp add summer-engine -- npx -y summer-engineRun in your terminal. Add --scope user to use it in every project.
{
"mcpServers": {
"summer-engine": {
"command": "npx",
"args": [
"-y",
"summer-engine"
]
}
}
}Settings, Developer, Edit config. Paste into claude_desktop_config.json and restart.
{
"mcpServers": {
"summer-engine": {
"command": "npx",
"args": [
"-y",
"summer-engine"
]
}
}
}Add to ~/.cursor/mcp.json (all projects) or .cursor/mcp.json (this project).
{
"servers": {
"summer-engine": {
"command": "npx",
"args": [
"-y",
"summer-engine"
]
}
}
}Add to .vscode/mcp.json. VS Code uses "servers", not "mcpServers".
codex mcp add summer-engine -- npx -y summer-engine{
"mcpServers": {
"summer-engine": {
"command": "npx",
"args": [
"-y",
"summer-engine"
]
}
}
}Add to ~/.gemini/config/mcp_config.json (all projects) or .agents/mcp_config.json (this project).
gemini mcp add summer-engine npx -y summer-engineGemini CLI was replaced by Antigravity CLI in June 2026 and remains only for enterprise licences and paid API keys.
MCP servers run with your permissions and can read what you give them access to. Some need an API key: check the README and add it under env in the summer-engine block.
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Security check
ANo download-and-run commands, hidden instructions or signs of sending keys out were found.
Checked automatically: README.md, package.json. This looks for known risky patterns and is not a full audit. How grades work
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Summer Engine: common questions
How do I install Summer Engine?
In Claude Code run claude mcp add summer-engine -- npx -y summer-engine. For Claude Desktop, Cursor and VS Code, paste the config shown above and restart. See the install guides.
Is Summer Engine the official server?
Summer Engine is a community project by summerengine, not verified by a company domain.
Is Summer Engine free?
The code is published under the MIT licence. The service it connects to may have its own pricing.
Is Summer Engine safe to use?
It scores 86 of 100. Grades: maintenance A, licence A, quality B. Security check: grade A, no risky patterns found in the files checked. Review the code before you install. How grades work.
What are alternatives to Summer Engine?
Similar MCP servers: Harness, MCP Registry Server, ref-tools-ref-tools-mcp, Microsoft Learn MCP.
Does Summer Engine work with ChatGPT?
Yes. Add its server URL in ChatGPT as a custom connector. See MCP in ChatGPT.