Postman Flows is an API workflow builder for logically connecting APIs. Use Flows in your Postman workspace to chain requests, handle data, and construct real-world workflows.

Postman Flow is a free beta feature available to all Postman members. To get started, go to the Postman web app or download the newest version of the Postman desktop client.

Before I proceed further in this post covering some of the advanced use cases implemented through Postman Flow, it is highly recommended to go through my previous video.

In my previous video, I have covered the basics of Postman flow as well as implemented a basic use case. You can watch the video below.

Today I will be covering two advanced use cases implemented through Postman Flow. I will be using some free APIs and Postman blocks to implement the use cases. So without any further delay let’s start –

Use Case 1: Consolidating responses from multiple web services

I will be using the free Bored API which recommends activities based on categories.

Here are the steps –

• • Step 1 – Call Bored API to get activity recommendation of type recreational.
  • Step 2 – Call Bored API again to get another activity recommendation of type recreational.
  • Step 3 – Create a list containing recommendations from both call 1 and 2.
  • Step 4 – Finally print the list in the Terminal.

Watch the video below to understand how I have implemented this use case in Postman Flow. The blocks I have used from Postman are – Send Request, Create Data and Terminal

Use Case 2: Introducing the delay

I will be using the free Bored API which recommends activities based on categories and modify the previous implementation a little bit to introduce the delay

Here are the steps –

• • Step 1 – Call Bored API to get activity recommendation of type recreational.
  • Step 2 – Introduce the delay of 10 seconds
  • Step 3 – Call Bored API again to get another activity recommendation of type recreational after 10 seconds.
  • Step 4 – Create a list containing recommendations from both call 1 and 2.
  • Step 5 – Finally print the list in the Terminal.

Watch the video below to understand how I have implemented this use case in Postman Flow. The blocks I have used from Postman are – Send Request, Delay, Create Data and Terminal.

Use Case 3: Loop through the result

I will be using the free Cocktail Database API which recommends cocktail drinks based on ingredients.

Here are the steps –

• • Step 1 – Call Cocktail API to get cocktail drinks based on the ingredient Vodka.
  • Step 2 – Loop through the result
  • Step 3 – Create variable to store the cocktail drink name
  • Step 4 – Finally print the name in the Terminal.

Watch the video below to understand how I have implemented this use case in Postman Flow. The blocks I have used from Postman are – Send Request, For Each, Create Data and Terminal.

Use Case 4: Validate the result

I will be using the free Open-Meteo API which returns the weather information based on the location.

Here are the steps –

• • Step 1 – Call Open-Meteo API to get Vancouver weather information.
  • Step 2 – Call Open-Meteo API to get New York weather information.
  • Step 3 – Validate whether Vancouver’s Windspeed is less than equal to New York’s Windspeed
  • Step 4 – If yes, print Vancouver’s weather information.

Watch the video below to understand how I have implemented this use case in Postman Flow. The blocks I have used from Postman are – Send Request, Check and Terminal.

Conclusion

I think this new feature is beneficial for implementing multiple use cases in more drag and drop approach. Flows is in beta, and the Postman team is continuously working on it. I would love to hear about your flow creations, and any bugs you’ve run into while working with Postman flow.