> ## Documentation Index
> Fetch the complete documentation index at: https://docs2.zenskar.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Monitoring
You can monitor various aspects of your customer's contract and usage.
## Add a monitor
1. Click on **Monitoring** in the left sidebar.
2. Click on the **ADD MONITOR** button.
3. Fill in the following details:
* **Monitor name**: a descriptive name for the monitor.
* **Monitor description**: add a description for the monitor.
* **Monitor source**: choose from **Contract** and **Usage Aggregate**.
### Select contract
1. Click on the **Select Contract** dropdown.
2. Select the contract you would like to add monitors for.
The example contract, **A Simple Contract**, has only one flat-fee based product.
3. Click on the newly added **Select Item** dropdown.
4. Select itmes:
* You can add monitors for various aspects of the billing period, such as:
* `end_date`: end date of the billing period.
* `start_date`: start date of the billing period.
* `cycle_length`: how many days/weeks/months/years does a billing cycle last.
* `cycle_unit`: unit of the cycle (day/week/month/year).
* `cycle_start_date`: start date of the billing cycle.
* `contract_start_date`: start date of the contract.
* You can add monitors for various aspects of a product. The aspects are dependent on the product.
* For example, for a flat-fee-based product, `amount`, `billed_amount`, and `billed_days` can be selected.
* For example, for a volume-pricing-based product, only `amount` can be monitored.
* You can add a monitor for invoice by selecting `invoice_total`.
### Select usage aggregate
> 🚧 Coming soon
## View a monitor
1. Click on **Monitoring** in the left sidebar.
2. All available monitors will be listed on the **Monitoring** page.
3. Click on the monitor you are interested in.
4. A panel will appear on the right side. Select the following parameters to view the monitor:
* **Customer**: select the customer.
* **Select date**: select the date for which you want to view the monitor.
* **Net or increment**: The net value of the monitor or the increment compared to the previous day.