{
  "$schema": "https://modelcontextprotocol.io/schemas/server-manifest-2024-11-05.json",
  "mcpVersion": "2024-11-05",
  "name": "base-wallet-guard",
  "version": "1.0.0",
  "description": "Read-only Base mainnet ERC-20 allowance scanner. Answers 'what can move this wallet's tokens right now' with live eth_call reads instead of an indexer, and reports the exposed balance behind each live approval.",
  "homepage": "https://9xj89gzrtw-hue.github.io/base-tax-audit/",
  "repository": "https://github.com/9xj89gzrtw-hue/base-tax-audit",
  "license": "MIT",
  "transports": [
    {
      "type": "stdio",
      "command": "node",
      "args": ["mcp/server.mjs"],
      "cwd": "repository root"
    }
  ],
  "tools": [
    {
      "name": "scan_approvals",
      "description": "Live allowances for a Base wallet against a verified registry of routers, aggregators, lending markets and marketplaces, plus the balances behind them.",
      "readOnly": true,
      "input": {
        "address": "string (0x + 40 hex)",
        "onlyUnlimited": "boolean (optional)"
      }
    },
    {
      "name": "check_allowance",
      "description": "One allowance(owner, spender) read, for spenders outside the registry.",
      "readOnly": true,
      "input": {
        "owner": "string",
        "token": "string",
        "spender": "string"
      }
    },
    {
      "name": "pricing",
      "description": "Price, payment address and verification method for the Pro licence.",
      "readOnly": true,
      "input": {}
    }
  ],
  "requirements": {
    "network": "outbound HTTPS to public Base RPC endpoints",
    "credentials": "none",
    "packages": "none — the server imports the site's own modules",
    "nodeVersion": ">=20"
  },
  "cost": {
    "perCall": "free",
    "licence": "9 USDC on Base (8453), one-time, optional"
  },
  "limits": "An approval granted to a contract the wallet never transacted with and that is not in the registry will not be listed. A full historical sweep needs an archive node, which no free public Base endpoint provides."
}