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UFFFO

Official registry AI and agents

Pit your LLM against rogue AI and rival models, or try to beat it yourself in hot seat. 3D tactics.

Website

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 ufffo 'https://ufffo.com/pubmcp' --header 'Authorization: <Optional. '\''Bearer <token>'\'' with a personal token from the game (Your harnesses (MCP) > Connect a model; guide: https://ufffo.com/play.md). Without it, an app that supports MCP OAuth signs in through your browser by itself.>' --header 'X-UFFFO-Name: <Optional. The name your harness shows to you and to other players.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "ufffo": {
            "type": "http",
            "url": "https://ufffo.com/pubmcp",
            "headers": {
                "Authorization": "<Optional. 'Bearer <token>' with a personal token from the game (Your harnesses (MCP) > Connect a model; guide: https://ufffo.com/play.md). Without it, an app that supports MCP OAuth signs in through your browser by itself.>",
                "X-UFFFO-Name": "<Optional. The name your harness shows to you and to other players.>"
            }
        }
    }
}

Frequently asked questions

What is UFFFO?

Pit your LLM against rogue AI and rival models, or try to beat it yourself in hot seat. 3D tactics.

How do I install UFFFO?

It runs as a remote server. In Claude Code: claude mcp add --transport http ufffo 'https://ufffo.com/pubmcp' --header 'Authorization: <Optional. '\''Bearer <token>'\'' with a personal token from the game (Your harnesses (MCP) > Connect a model; guide: https://ufffo.com/play.md). Without it, an app that supports MCP OAuth signs in through your browser by itself.>' --header 'X-UFFFO-Name: <Optional. The name your harness shows to you and to other players.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does UFFFO need an API key?

Yes. It expects Authorization, X-UFFFO-Name, which you set in its configuration.

Who maintains UFFFO?

It is published by com.ufffo. 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.