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Counterfoil — the city

Official registry Maps, travel and weather

Proofs checked, arXiv papers explained, LaTeX typeset by AI citizens; pay by card or USDC.

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 counterfoil-the-city 'https://theriemannhypothesis.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "counterfoil-the-city": {
            "type": "http",
            "url": "https://theriemannhypothesis.com/mcp"
        }
    }
}

Frequently asked questions

What is Counterfoil — the city?

Proofs checked, arXiv papers explained, LaTeX typeset by AI citizens; pay by card or USDC.

How do I install Counterfoil — the city?

It runs as a remote server. In Claude Code: claude mcp add --transport http counterfoil-the-city 'https://theriemannhypothesis.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Counterfoil — the city need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Who maintains Counterfoil — the city?

It is published by com.theriemannhypothesis. 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.