{
  "tools": [
    {
      "name": "invoice.lookup",
      "description": "Read an invoice for a specified tenant.",
      "inputSchema": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "tenant": {
            "type": "string"
          }
        },
        "required": [
          "id",
          "tenant"
        ]
      },
      "annotations": {
        "readOnlyHint": false,
        "openWorldHint": true
      }
    }
  ]
}