402MCP.org MCP Server: Install & Setup

Install 402MCP.org in Claude Code

Remote URL

Claude Code

claude mcp add --transport http 402mcp-org-http-402-agent-payment-regist https://402mcp.org/api/v1/mcp

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

{
  "mcpServers": {
    "402mcp-org-http-402-agent-payment-regist": {
      "url": "https://402mcp.org/api/v1/mcp"
    }
  }
}

npm

Claude Code

claude mcp add 402mcp-org-http-402-agent-payment-regist -- npx -y @402mcp/mcp

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

{
  "mcpServers": {
    "402mcp-org-http-402-agent-payment-regist": {
      "command": "npx",
      "args": [
        "-y",
        "@402mcp/mcp"
      ]
    }
  }
}

Frequently asked questions

What does the 402MCP.org MCP server do?

Decodes HTTP 402 Payment Required challenges (L402, x402, MPP) into exact pay-and-retry steps, recommends a payment rail from stated requirements, and searches an open registry of agent payment solutions. Read-only; never spends money.

Is the 402MCP.org MCP server free?

Probably not entirely. The listing mentions pay-per-call, credits or a subscription. Check the provider for current pricing.

Does 402MCP.org run locally or remotely?

Local + Remote. Can run locally or be used as a hosted remote server.

How do I add 402MCP.org to Claude Code?

Run: claude mcp add --transport http 402mcp-org-http-402-agent-payment-regist https://402mcp.org/api/v1/mcp

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