Paywall MCP Server: Install & Setup

Install Paywall in Claude Code

Claude Code

claude mcp add paywall -e PAYWALL_UPSTREAM_COMMAND=... -e NWC_CONNECTION_STRING=... -- npx -y paywall-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "paywall": {
      "command": "npx",
      "args": [
        "-y",
        "paywall-mcp"
      ],
      "env": {
        "PAYWALL_UPSTREAM_COMMAND": "...",
        "NWC_CONNECTION_STRING": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Paywall MCP server do?

Lightning-paywall sidecar: wraps any stdio MCP server, requires paid invoices before tool calls.

Is the Paywall MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Paywall run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Paywall to Claude Code?

Run: claude mcp add paywall -e PAYWALL_UPSTREAM_COMMAND=... -e NWC_CONNECTION_STRING=... -- npx -y paywall-mcp

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