aws-sso-cred-restore: Restoring AWS SSO Credentials for Legacy Tools

AWS IAM Identity Center (previously AWS SSO) greatly simplified secure access to multiple AWS accounts and roles through temporary credentials. However, many older SDKs, CLI tools, and infrastructure automation systems were originally built around static AWS credentials stored in ~/.aws/credentials.

The aws-sso-cred-restore utility was created to bridge this compatibility gap by restoring or exporting temporary AWS SSO credentials into formats supported by older tooling environments. The project was inspired by tools such as aws2-wrap and focuses on improving compatibility with applications that cannot directly consume AWS SSO sessions.

What Is aws-sso-cred-restore?

aws-sso-cred-restore is a command-line helper designed to extract cached AWS SSO credentials from AWS CLI v2 sessions and expose them in a way older tools can understand.

The utility helps developers work with:

Legacy AWS SDKs
Terraform workflows
CI/CD scripts
Older Go libraries
Shell environments
Applications expecting environment variables

Instead of manually copying temporary credentials every time an SSO session refreshes, the tool automates the restoration and export process.

Why AWS SSO Compatibility Became a Problem

AWS CLI v2 introduced native support for AWS IAM Identity Center authentication using commands such as:

aws configure sso
aws sso login

These commands create cached authentication sessions stored locally. Modern SDKs can often read these sessions automatically, but many older libraries and tools cannot.

This created problems for developers using:

Tool Type	Typical Issue
Older SDKs	No native SSO support
Terraform versions	Credential loading failures
Docker workflows	Missing temporary credentials
CI pipelines	Incompatible auth mechanisms
Third-party CLIs	Static credential expectations

Utilities like aws-sso-cred-restore help expose temporary credentials in traditional AWS formats that older tooling can consume.

Main Features

Credential Export

The tool can export temporary AWS credentials into shell environment variables for immediate usage.

Example workflow:

eval "$(aws-sso-cred-restore --profile dev --export)"

This allows developers to use AWS credentials directly inside terminal sessions.

AWS Profile Support

The utility works with AWS profiles configured through AWS CLI v2 SSO setups.

Typical AWS configuration:

[profile dev]
sso_start_url = https://example.awsapps.com/start
sso_region = us-east-1
sso_account_id = 123456789012
sso_role_name = DeveloperAccess
region = us-east-1

Compatibility With Older Tools

One of the main goals of the project is helping legacy software continue functioning inside modern AWS SSO environments.

This is particularly useful for:

Older Terraform providers
Deprecated SDKs
Internal enterprise tooling
Scripts expecting static credentials

How AWS SSO Sessions Work

AWS IAM Identity Center authentication uses temporary access tokens instead of permanent IAM user credentials.

The general process looks like this:

User logs in through browser authentication
AWS CLI stores cached session tokens locally
Tools retrieve temporary STS credentials
Sessions eventually expire and refresh

The problem is that many older tools were built before this workflow existed and still expect:

AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY
AWS_SESSION_TOKEN

Utilities such as aws-sso-cred-restore help convert cached SSO sessions back into this traditional format.

Common Development Workflows

Terraform Integration

Many developers use the utility when working with older Terraform providers that lack direct AWS SSO integration.

Shell Session Management

Exporting credentials into terminal sessions simplifies running AWS CLI commands across multiple accounts.

Automation Scripts

Build systems and deployment scripts often rely on environment variables for authentication.

Containerized Development

Docker-based workflows may require explicit credential exports when SSO sessions are not automatically detected.

Alternatives and Related Tools

Several other projects were created to improve AWS IAM Identity Center usability, including:

aws-sso-util
aws-sso-credential-process
aws-vault
go-aws-sso

Modern AWS SDKs increasingly support SSO natively, reducing the need for compatibility wrappers in newer environments.

Security Considerations

Although restoring credentials improves compatibility, developers should still follow AWS security best practices:

Avoid storing long-lived credentials
Use least-privilege roles
Rotate sessions regularly
Secure local credential caches
Avoid exposing credentials in logs or CI output

AWS IAM Identity Center remains safer than distributing permanent IAM access keys across teams.

Final Thoughts

aws-sso-cred-restore is a practical compatibility tool designed to help older AWS tooling function within modern AWS IAM Identity Center environments. By restoring temporary SSO credentials into traditional AWS credential formats, the utility simplifies development workflows for Terraform, automation scripts, legacy SDKs, and enterprise tooling.

As AWS ecosystems continue evolving toward native SSO integration, tools like aws-sso-cred-restore remain useful transitional solutions for teams balancing modern authentication with legacy infrastructure compatibility.