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402lounge

Official registry Finance and payments

Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base).

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 402lounge 'https://mcp.402lounge.com/mcp' --header 'Authorization: <Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "402lounge": {
            "type": "http",
            "url": "https://mcp.402lounge.com/mcp",
            "headers": {
                "Authorization": "<Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it.>"
            }
        }
    }
}

Frequently asked questions

What is 402lounge?

Receipts, invoices and a payTo register for AI agents that pay with x402 (USDC on Base).

How do I install 402lounge?

It runs as a remote server. In Claude Code: claude mcp add --transport http 402lounge 'https://mcp.402lounge.com/mcp' --header 'Authorization: <Bearer lg_... session token from lounge.signup. Free tools such as register.lookup work without it.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does 402lounge need an API key?

Yes. It expects Authorization, which you set in its configuration.

Who maintains 402lounge?

It is published by com.402lounge. 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.