io.github.SummerEngine/summer

Summer Engine

Is the Summer Engine MCP server down? No. It is up and needs auth (HTTP 401), probed 2026-11-15.

The game engine built for AI. Any agent makes a multiplayer game and publishes it.

needs auth probed 2026-11-15 · HTTP 401 · Bearer

Streamable HTTP error: Error POSTing to endpoint: {"error":"invalid_token","message":"Sign in to Summer Engine to use this connector."}

Endpoint: https://mcp.summerengine.com/mcp (streamable-http)
Host: mcp.summerengine.com
Package: The publisher's package npm:summer-engine did not list its tools in the container: crashed on start, MCP error -32000: Connection closed Summer collects usage data to improve its tools: which commands and tools run, whether they worked, and which agent app ran .
Getting access: OAuth with dynamic client registration. A client such as Claude Code, Cursor or npx mcpcost auth https://mcp.summerengine.com/mcp registers itself and opens the consent page; the publisher has nothing to set up for you. The publisher's guide to getting access.
Authorization server bjhcdenhsahdyirbbzlx.supabase.co, PKCE S256, grants authorization_code, refresh_token.
Scopes openid email offline_access.
Read from the server's public OAuth metadata, without a token. Method.
Repository: https://github.com/summerengine/summer
Website: https://summerengine.com
Registry: active, updated 2026-11-13 · registry entry

More servers

Servers that mention summer.

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

The server answers HTTP 401 to an unauthenticated initialize, so the probe cannot list its tools. That is correct for a private server. Some public servers answer initialize and tools/list without credentials and ask for auth on tool calls only; those get a token count here.

Fixed something? Probe it now, with the same steps as the daily run. This page updates with the next daily run.