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Performing actions in cloud flows by calling external APIs is a crucial aspect of Microsoft Power Automate’s RPA Developer capabilities. APIs allow you to integrate and communicate with external services, systems, and data sources, enabling you to automate complex business processes. In this article, we will explore how you can leverage external APIs within your cloud flows to enhance the functionality and efficiency of your RPA workflows.

Calling External APIs in Cloud Flows:

Microsoft Power Automate provides various actions and connectors to interact with external APIs seamlessly. By utilizing these actions, you can send requests, receive responses, and manipulate data with ease. Let’s dive into the steps to perform actions in cloud flows by calling external APIs.

Step 1: Define the Trigger:

Before calling an external API, you need to define a trigger that initiates the flow. You can choose from a wide range of triggers available in Power Automate, such as a scheduled flow, a button trigger, or event-based triggers like when a new email arrives.

Step 2: Add an action to call the API:

To call an external API, add the “HTTP” or “HTTP with Azure AD” action to your flow. These actions enable you to send HTTP requests to the desired API endpoint. The “HTTP” action allows you to call APIs that don’t require authentication, while the “HTTP with Azure AD” action is suitable for APIs that require Azure Active Directory authentication.

Step 3: Configure the API action:

Once you add the API action, you need to configure it by providing the necessary details. This includes specifying the API endpoint URL, HTTP method (GET, POST, PUT, DELETE, etc.), and any required parameters. You can pass dynamic content or variables from previous actions as inputs to the API action.

Step 4: Handle the API response:

After calling the external API, you can handle the response within your flow. Based on the API response, you can perform various actions such as parsing the returned data, extracting specific values, or processing it further. Power Automate provides an extensive set of actions and expressions to manipulate and extract data from the API response.

Step 5: Error handling and retries:

To ensure robustness, it’s essential to handle errors and retries when calling external APIs. Power Automate offers built-in error handling capabilities that allow you to handle exceptions, such as timeouts or failed API requests. You can define error actions, such as sending an email notification or logging the error details, to take appropriate corrective measures.

Step 6: Transform and process the data:

Once you receive the API response, you might need to transform or process the data before proceeding further in your flow. Power Automate provides a range of data manipulation actions like filtering, mapping, and sorting, enabling you to manipulate the retrieved data as per your requirements.

Step 7: Perform subsequent actions:

After processing the API response, you can carry out subsequent actions within your cloud flow. These actions can include updating data in a database, sending data to another system, generating reports, or triggering additional processes. Power Automate offers a vast collection of connectors that integrate with popular services, enabling seamless interaction.

Example Code Snippet:

HTTPPOST(
uri: "https://api.example.com/users",
body: json('{ "name": "John Doe", "email": "[email protected]" }'),
headers: {
"Content-Type": "application/json"
}
)

Conclusion:

Calling external APIs in cloud flows provides you with immense capabilities to automate complex processes and integrate with various systems. Microsoft Power Automate’s RPA Developer capabilities allow you to easily incorporate these actions within your workflows. By leveraging the HTTP actions, handling responses, and processing data, you can create powerful automations that interact with external APIs efficiently. Experiment with different connectors, explore Microsoft’s documentation, and unleash the potential of external API integration in Power Automate.

Answer the Questions in Comment Section

When calling an external API in a cloud flow, the HTTP action can be used to send and receive data.

a) True
b) False

Correct answer: a) True

Which authentication methods are supported when calling external APIs in a cloud flow? (Select all that apply)

a) Basic authentication
b) OAuth 0
c) Integrated Windows Authentication
d) Certificate-based authentication

Correct answer: a) Basic authentication, b) OAuth 0

In a cloud flow, how can you handle errors that occur while calling an external API?

a) Use the “On Failure” run-after configuration to specify actions to be taken in case of an error.
b) Wrap the API call in a try-catch block to catch and handle any exceptions.
c) Use the “ContinueOnError” property of the HTTP action to determine the behavior on error.
d) Use the “Respond to a Power App or flow” action to send an error response back to the caller.

Correct answer: a) Use the “On Failure” run-after configuration to specify actions to be taken in case of an error.

When calling an external API in a cloud flow, how can you pass parameters to the API endpoint?

a) Use the “Query” property of the HTTP action to include query parameters.
b) Use the “Headers” property of the HTTP action to include custom headers.
c) Use the “Body” property of the HTTP action to include JSON payload.
d) Use the “Parameters” property of the HTTP action to include URL path parameters.

Correct answer: a) Use the “Query” property of the HTTP action to include query parameters.

Which format is commonly used to pass data between the HTTP action and the API endpoint in a cloud flow?

a) XML
b) JSON
c) CSV
d) HTML

Correct answer: b) JSON

How can you handle pagination when calling an API that returns a large set of results in a cloud flow?

a) Use the “Skip” and “Top” query parameters to retrieve results in batches.
b) Use the “For Each” action to loop through the paginated results.
c) Use the “NextLink” property provided in the API response to fetch the next page of results.
d) Use the “Filter Array” action to filter the results based on a specific condition.

Correct answer: c) Use the “NextLink” property provided in the API response to fetch the next page of results.

Which action can be used to transform the data received from an API response in a cloud flow?

a) Parse JSON action
b) Initialize variable action
c) Select action
d) Apply to each action

Correct answer: a) Parse JSON action

How can you securely store sensitive information, such as API keys or connection strings, in a cloud flow?

a) Use the “Secure Input” option provided in the HTTP action to encrypt the input.
b) Store the sensitive information in a secure database and retrieve it during runtime.
c) Define the sensitive information as environment variables and reference them in the cloud flow.
d) Use the “Secure Store” action to store and retrieve the sensitive information.

Correct answer: c) Define the sensitive information as environment variables and reference them in the cloud flow.

Can you use the HTTP action in a cloud flow to make POST requests?

a) Yes
b) No

Correct answer: a) Yes

How can you handle rate limits or throttling imposed by an API when calling it from a cloud flow?

a) Use the “Delay” action to introduce a delay between API calls.
b) Monitor the API usage and adjust the flow frequency accordingly.
c) Implement exponential backoff and retry logic to handle rate limits.
d) Configure the API connection settings to automatically handle rate limits.

Correct answer: c) Implement exponential backoff and retry logic to handle rate limits.

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Simon Mathieu
9 months ago

This blog really helped me understand how to call external APIs in cloud flows for PL-500 exam prep.

Philip Christensen
8 months ago

Thanks for the detailed explanation. It clarifies a lot about handling APIs in Power Automate.

Stella Brunet
8 months ago

I appreciate the blog post!

Sandhya Shet
1 year ago

How do you handle authentication headers while calling an external API in a cloud flow?

Ege Akbulut
1 year ago

Are there any limitations on the types of external APIs that can be called from Power Automate?

Hendrik-Jan Stoffels
3 months ago

This guide on calling external APIs is top-notch!

Amparo Castillo
1 year ago

For the PL-500 exam, do we need to understand the different types of API authentication methods?

Yarosvit Iednak
5 months ago

This blog could have used more examples on handling common errors when calling APIs.

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