Marketo REST APIs: 3 Key Operations Simplified

• October 18th, 2021

Marketo is a popular tool for Marketing Automation. It allows individuals and businesses to automate their Marketing activities. This relieves them from doing most of their Marketing tasks manually, which is good for efficiency and saving time. For instance, you can use Marketo to schedule your social media posts to be live at the appropriate time. The good thing with Marketo is that it works with different Marketing Platforms. 

When using Marketo, you will need to access some of its functionalities from your third-party applications. The good news is that Marketo REST API allows you to execute some of its capabilities remotely. You can also Create Programs, Perform a Bulk Lead Import, and perform other activities that allow fine-grained control of Marketo. It is also good for extending the functionality of Marketo.

In this article, we will be discussing how to use Marketo REST APIs to automate a variety of your Marketing Initiatives and Operations that you can set up and perform with Marketo.

Table of Contents

Prerequisites

This is what you need for this article:

  • A Marketo Account
  • A Postman Account

Introduction to Marketo

Marketo REST API - MArketo logo
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Marketo is a SaaS (Software-as-a-Service) based Marketing Automation Software used by companies to automate and measure Marketing Engagement, Tasks, and Workflows. It helps B2B and B2C Marketers to target qualified leads, create lead-to-revenue opportunities, and run personalized and automated Marketing Campaigns across several digital channels. 

Marketo can be used across multiple digital channels such as email, website, video, mobile devices, and search advertisements to automate Marketing Campaigns and Lead Generation for Marketers. 

Some of the popular features offered by Marketo include the following:

  • Search Engine Optimization (SEO)
  • Lead Tracking
  • Lead Nurturing
  • Digital Advertisements
  • Campaign Analysis
  • Website Personalization
  • CRM Integration
  • Social Marketing

The Marketo REST API can further help you access some of its functionalities from your third-party software and systems. 

Working with Marketo REST API

In this section, you’ll learn how to use and perform operations using the Marketo REST API. You can do this by using an API client such as Postman:

A) Creating the Marketo Environment

To use Marketo REST APIs in Postman, you should begin by setting up the Marketo Environment and the necessary environment variables. Follow the steps given below to do this:

Step 1: Log into your Postman account.

Step 2: Click the “Manage Environments” icon located to the right of the eye icon. 

Step 3: A new window will now open up. Click “Add”. 

Step 4: Give the Marketo Environment a name, for example, “Marketo”. 

Marketo REST API - postman prompt
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Step 5: Create 3 variables for the base URL, Client Id, Client Secret, and the Bearer Token. 

You can find the values for the Base URL, Client Id, and Client Secret in the Authentication section of Marketo API docs. The value of the base URL should be similar to the “Endpoint and Identity URLs but the “/rest” and “/identity” should be removed from the end. For example, the Base URL can be given as follows:

 base_url = https://xxx-xxx.mktorest.com. 

Now that the environment is set, let’s proceed to make your first request using the Marketo REST API. 

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B) Making a Marketo REST API GET Request

To make an API Request in Marketo, you should have an “Access Token” since it will be required for the purpose of authenticating the requests. The following steps can help you to make a GET request:

Step 1: Click the “New” button on the top-left corner of your Postman home page. Choose “HTTP Request”.

Marketo REST API - GET request
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Step 2: Give the request a name. 

Step 3: Choose a collection to store the request or click the “Create Collection” option to create a new collection to be used for storing all your Marketo API Requests

Step 4: Select “GET” on the dropdown menu and paste the following into the URL bar:

{{base_url}}/identity/oauth/token?grant_type=client_credentials&client_id={{client_id}}&client_secret={{client_secret}}

Note: You must substitute the values of the variables with the correct values. The three parameters specified in the Request URL will automatically populate the “Params” tab under the URL bar. 

Step 5: Ensure that you have selected your Marketo Environment in the environment dropdown button located to the left of the eye icon. 

Step 6: Click the “Tests” tab and paste the following code into the tests window:

var jsonData = pm.response.json();
pm.environment.set("bearer_token", jsonData.access_token);

The code takes the Access Token returned from Marketo and stores it in the “bearer_token” variable. 

Marketo REST API - Bearer token
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Step 7: Click “Save” and then “Send”.

Congratulations! You have made a Marketo API request.

The code you pasted in the tests tab stored the Access Token as a variable so that you can use it in the other requests you make using Postman. The Marketo Authorization token has a lifetime of 3600 Seconds, thus, you should run the authorization request frequently to have valid tokens. 

C) Making a Marketo REST API POST Request

The following steps will help you create a Marketo API POST request:

Step 1: Click the “New” button on the top-left corner of your Postman home page. Choose “HTTP Request”.

Step 2: Give the request a name. 

Step 3: Choose your Marketo API collection. 

Step 4: Select “POST” on the dropdown menu and paste the following into the URL bar:

{{base_url}}/rest/asset/v1/program/123.json

Replace the 123 with the Id of a program that can be used for testing. You can get the Id by clicking on the program. 

Step 5: Ensure that you have selected your Marketo Environment in the environment dropdown button located to the left of the eye icon. 

Step 6: Click the “Authorization” tab and select “Bearer Token” for Type. 

Marketo REST API - Authorize bearer token
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Step 7: Paste the {{bearer_token}} into “Token”. 

Step 8: Open the “Body” tab. Click the “x-www-form-urlencoded” radio button.  

Step 9: Set the value of “Key” to “Description” and “Value” to “Marketo API POST Request”. 

Step 10: Click “Save” and then “Send”. 

You will find the response under the Postman console in JSON format. 

You now know how to make GET and POST requests using the Marketo REST API.

Conclusion

This article provided you with an in-depth understanding of Marketo and the REST APIs supported by the platform. It also provided you with a step-by-step guide to help you set up your Marketo Environment and make GET & POST Requests using the Marketo REST APIs.

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