# Subscribing to and accessing an AWS Data Exchange product containing APIs
The following topics describe the complete process of subscribing to and accessing a product containing APIs on AWS Data Exchange by using the AWS Data Exchange console.
For information about how to evaluate a product before subscribing, see [Evaluate products containing data dictionaries and samples](subscriber-getting-started.md#evaluate-products).
The process has the following steps:
**Topics**
+ [Step 1: Subscribing to a product containing APIs](#subscribe-to-API-product)
+ [Step 2: Accessing an API product](#use-API-product)
To practice subscribing to and accessing a product containing APIs, see the [AWS Data Exchange for APIs (Test Product)](subscriber-tutorial-api-product.md).
## Step 1: Subscribing to a product containing APIs
If you subscribe to a paid product, you're billed on your AWS bill. You get access to all entitled data sets. For more information, see [Subscribing to AWS Data Exchange data products on AWS Data Exchange](subscribe-to-data-sets.md).
A provider might include metered costs to their product containing APIs. If a provider decreases metered costs, the price decrease goes into effect immediately. If the provider increases metered costs, and you're an existing subscriber, the price increase goes into effect on the first day of the month, 90 days after the price increase was submitted OR upon renewal (whichever is sooner). An email message is sent to existing subscribers when the price change is submitted.
**Example**
For example, assume that a provider submits a metered cost price increase on May 10. Existing subscribers receive an email message about the price change. The price increase goes into effect on September 1.
**To subscribe to a product containing APIs**
1. Open and sign in to the [AWS Data Exchange console](https://console.aws.amazon.com/dataexchange).
1. In the left side navigation pane, under **Discover data products**, choose **Browse catalog**.
For more information, see [Browse the catalog](subscriber-getting-started.md#browse-catalog).
1. Under **Refine results**, use the **Data set type** filter and select **API** to find products containing APIs.
For more information, see [Browse the catalog](subscriber-getting-started.md#browse-catalog).
1. Select a product containing APIs, and view its product detail page.
The information on the product detail page includes a product description, the provider's contact information, and the details of the product's public offer. The public offer information includes price and durations, metered costs (if included), the data subscription agreement (DSA), and the refund policy. You can view the names of the data sets included in the product and the AWS Regions in which they are available. You can also continue to browse other product detail pages by choosing a product under **Similar products**.
If the provider has issued a custom offer to your account (for example, a [private offer](subscribe-to-private-offer.md) or [Bring Your Own Subscription (BYOS) offer](subscribe-to-byos-offer.md)), you see those details, too.
1. Under **Public offer**, view the **API metered costs** (if included).
1. (Optional) In the **Metered cost calculator**, choose **Select metered cost** and then enter the number of units to display an example of the cost.
1. In the top right corner, choose **Continue to subscribe**.
1. Choose your preferred price and duration combination, choose whether to enable auto-renewal for the subscription, and review the offer details, including the DSA.
**Note**
Some products require subscription verification. For more information, see [Subscription verification for subscribers in AWS Data Exchange](subscription-verification-sub.md).
1. Review the pricing information, choose the pricing offer, and then choose **Subscribe**.
**Note**
If you subscribe to a paid product, you're prompted to confirm your decision to subscribe.
1. Under **Data sets included with your subscription**, view the listed **Data sets**.
After the subscription finishes processing, you can choose a data set to access your entitled data or choose **View subscription** to view your subscription.
## Step 2: Accessing an API product
The following topics provide details about how to access a product that includes API data sets:
**Topics**
+ [Viewing an API](#view-the-api)
+ [Downloading the API specification](#download-api-spec)
+ [Making an API call (console)](#make-api-call-console)
+ [Making an API call (AWS CLI)](#make-api-call-cli)
### Viewing an API
**To view an API**
1. Open and sign in to the [AWS Data Exchange console](https://console.aws.amazon.com/dataexchange).
1. In the left navigation pane, under **My subscriptions**, choose **Entitled data**.
1. Choose a data set.
1. Under the **Revisions** tab, choose a revision.
1. Under **API assets**, choose the API.
1. View the **Asset overview**.
1. Follow the guidance in the **Integration notes** to call the API.
### Downloading the API specification
**To download the API specification**
1. Open and sign in to the [AWS Data Exchange console](https://console.aws.amazon.com/dataexchange).
1. In the left navigation pane, under **My subscriptions**, choose **Entitled data**.
1. Choose a data set.
1. Under the **Revisions** tab, choose a revision.
1. Under **API assets**, choose the API.
1. On the **OpenAPI 3.0 specification**, choose **Download API specification**.
The specification is downloaded onto your local computer. You can then export the asset to a third-party tool for SDK generation.
### Making an API call (console)
You can call a single endpoint in the AWS Data Exchange console.
**To make an API call from the console**
1. Open and sign in to the [AWS Data Exchange console](https://console.aws.amazon.com/dataexchange).
1. In the left navigation pane, under **My subscriptions**, choose **Entitled data**.
1. Choose a data set.
1. Under the **Revisions** tab, choose a revision.
1. Under **API assets**, choose the API.
1. For **Integration notes**:
1. Choose **Copy** to use the **Base URL**.
1. Choose **Copy** to use the **Code structure**.
1. Follow the information provided in the specification documentation to call the API.
### Making an API call (AWS CLI)
**To make an API call (AWS CLI)**
+ Use the `send-api-asset` command to call the API.
```
$ AWS dataexchange send-api-asset \
--asset-id $ASSET_ID \
--data-set-id $DATA_SET_ID \
--revision-id $REVISION_ID \
--body "..." \
{
"headers": {
...
},
"body": "..."
}
```