How to Verify AWS Authentication in Cypress Using STS GetCallerIdentity

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Developers building Cypress test automation that interacts with AWS services can use the AWS Security Token Service (STS) and its GetCallerIdentity API to confirm successful authentication before writing further tests. The process involves installing the AWS SDK's STS client package and configuring credentials either via a local cypress.env.json file or through environment variables for CI/CD pipelines. Cypress environment variables must be mapped to Node.js process.env so the AWS SDK can automatically pick them up via its Credential Provider Chain. A Cypress task is then created to instantiate an STSClient and run GetCallerIdentityCommand, returning the authenticated account details if the connection succeeds. This foundational connectivity check ensures the automation environment is properly linked to the intended AWS account before integrating services like Lambda, S3, or DynamoDB.

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