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tech.vauban/pay-mcp

x402 tools for MCP clients: pay exact/Starknet or STARK-receipt 402s, verify, JCS-hash. No account.

Install

Add the config to your client settings. Replace values in <angle brackets> with your own.

claude_desktop_config.json

{
  "mcpServers": {
    "pay-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@vauban-pay/mcp@0.7.1"
      ],
      "env": {
        "STARKNET_RPC_URL": "<STARKNET_RPC_URL>",
        "PAY_MCP_SEPOLIA_ACCOUNT_ADDRESS": "<PAY_MCP_SEPOLIA_ACCOUNT_ADDRESS>",
        "PAY_MCP_SEPOLIA_PRIVATE_KEY": "<PAY_MCP_SEPOLIA_PRIVATE_KEY>",
        "PAY_MCP_STANDARD_X402_PAYEES": "<PAY_MCP_STANDARD_X402_PAYEES>",
        "PAY_MCP_STANDARD_X402_MAX_WEI": "<PAY_MCP_STANDARD_X402_MAX_WEI>",
        "PAY_MCP_STANDARD_X402_ACCOUNT_ADDRESS": "<PAY_MCP_STANDARD_X402_ACCOUNT_ADDRESS>",
        "PAY_MCP_STANDARD_X402_PRIVATE_KEY": "<PAY_MCP_STANDARD_X402_PRIVATE_KEY>"
      }
    }
  }
}

Details

Name: tech.vauban/pay-mcp
Version: 0.7.1
Updated: Oct 12, 2026
Source: Official MCP Registry