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Security

PayStage Auth Watch

xyz.paystage/auth-watch ยท v0.2.0

Read-only MCP tools to list and flag outstanding ERC-20, Permit2, and EIP-3009 auths

Website Source code Set it up

Connect Runs on your machine

Terminal
claude mcp add auth-watch -e PAYSTAGE_POLICY_PATH=<PAYSTAGE_POLICY_PATH> -e PAYSTAGE_RPC_URL=<PAYSTAGE_RPC_URL> -- npx -y @paystage/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "auth-watch": {
      "command": "npx",
      "args": [
        "-y",
        "@paystage/[email protected]"
      ],
      "env": {
        "PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>",
        "PAYSTAGE_RPC_URL": "<PAYSTAGE_RPC_URL>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "auth-watch": {
      "command": "npx",
      "args": [
        "-y",
        "@paystage/[email protected]"
      ],
      "env": {
        "PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>",
        "PAYSTAGE_RPC_URL": "<PAYSTAGE_RPC_URL>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "auth-watch": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@paystage/[email protected]"
      ],
      "env": {
        "PAYSTAGE_POLICY_PATH": "<PAYSTAGE_POLICY_PATH>",
        "PAYSTAGE_RPC_URL": "<PAYSTAGE_RPC_URL>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
PAYSTAGE_POLICY_PATH
Optional		Path to policy.json spending rules
PAYSTAGE_RPC_URL
Optional		Base RPC URL override

Details

Package@paystage/[email protected] (NPM, stdio)
First published10 Nov 2026
Last updated10 Nov 2026
Registry namexyz.paystage/auth-watch

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