json_schema: {
      "description": "Calculating cost of a transaction",
      "endpoint": "/cost",
      "methods": [
          "post"
      ],
      "params": {
          "amount": 5000,
          "network": "mpesa",
          "transactionType": "withdrawal",
          "transactor": "agent"
      },
      "properties": {
          "cost": {
              "type": "number"
          }
      },
      "required": [
          "cost"
      ],
      "type": "object"
  }