How to test AWS OpenSearch Serverless Auth in Postman

Christina Hastenrath
2 min readMar 4, 2023

AWS credentials, ElasticSearch, AWS Signed Request, IAM Policy

Photo by Daria Shevtsova on Unsplash

OpenSearch Serverless is a pre-configured serverless setup for Amazon OpenSearch Service that allows you to search and analyze large amounts of data without the need to manage the underlying infrastructure.

OpenSearch Serverless removes the complexities of configuring, tuning and managing OpenSearch clusters and enables you to focus on working with your data.

This post will guide you on how to set up and test your AWS OpenSearch Serverless configuration in Postman.

It assumes that you have already set up your AWS OpenSearch Serverless collection.
If you haven’t, you can follow the Amazon OpenSearch Serverless Getting Started Guide from steps 1 to 3.

After configuring permissions, creating a collection, and uploading search data, you can test AWS authentication in Postman for your collection endpoint.

To do so, create a new GET request in Postman. Use the following URL for the request:


💡 The endpoint for your OpenSearch Serverless collection is provided in the Overview tab of the collection.
The path is…



Christina Hastenrath

Molecular Biologist turned Software Engineer. I write about my code. Connect with me on Twitter @etTinchen