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Get a foundational understanding of API calls and how the Klaviyo APIs can benefit your business. In this guide, you will learn about REST APIs, HTTP methods, and developer tools to prepare you for testing Klaviyo's APIs. Your first API calls can be accomplished in as little as 10 minutes from start to finish. If you are already familiar with API calls and are ready to test our APIs, follow our guide on how to use our Postman collections.
Learn how to access your browser's developer console, which is a tool standard to most modern web browsers that logs page errors and warnings. The developer console can be helpful for debugging technical issues.
The following glossary is an overview of basic technical terms to familiarize yourself with when first learning about Klaviyo's APIs. Looking for a glossary of Klaviyo-specific terms? Check out our Klaviyo glossary.
Learn how to send test data to Zapier via a POST request when creating a webhook to send email and SMS consent to Klaviyo.
Learn how to manually import historical event data to Klaviyo. While we recommend using Klaviyo-built integrations with platforms such as Shopify, Magento, and BigCommerce, and our API for custom integrations, it's also possible to add this data manually. A common example of this is adding historical purchase data from a previous ecommerce platform that Klaviyo doesn't have a prebuilt integration for.