+++
title = "Test the Application"
weight = 12
+++

#### Export the stack output variables

To invoke our API's, we first need to fetch the `ApiUrl` output variable that our CloudFormation stack gives us. So let us iterate through our stack and export all output variables as environment variables:

```sh
export ApiUrl=$(aws cloudformation describe-stacks --stack-name monitoring-app --output json | jq '.Stacks[].Outputs[] | select(.OutputKey=="ApiUrl") | .OutputValue' | sed -e 's/^"//'  -e 's/"$//')
echo "export ApiUrl="$ApiUrl
```

#### Test the `Put Item` operation

```sh
curl -X POST \
  $ApiUrl/items/ \
  -d '{
        "id":"3",  
        "name": "Sample third item"
  }'
```