> ## Documentation Index
> Fetch the complete documentation index at: https://docs.flinks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# GEFT Sandbox Overview

> Use the GEFT sandbox to test session creation, user scenarios, and front-end design before go-live.

The Flinks Guaranteed EFT Sandbox is a test environment designed to validate both back-end and front-end functionalities of the GEFT product.

## Overview

The sandbox environment:

* **Does not connect to real accounts** or move actual funds
* **Simulates production environment** to help test various scenarios
* **Prepares your integration** and ensures readiness for go-live
* **Does not replace** testing with real accounts and transactions before deployment

The sandbox has two primary purposes:

1. **Test session creation** and different user scenarios, and integrate accordingly
2. **Review front-end design** and configuration, ensuring they align with your expectations

## Base Testing Flow

During testing, follow this sequence:

1. **Authenticate** with sandbox using your secret credentials
2. **Initiate session** using test scenario name and desired dynamic parameters
3. **Launch iFrame** with Session ID appended to trigger front-end scenario
4. **Complete front-end flow** by entering specified username/password for that scenario
   * "Happy" paths will return a SUCCESS JS event
   * "Unhappy" paths will display relevant error screen or event
5. **Check session status** by calling [/sessions/status](/api/pay/endpoints/geft/sessions-status) endpoint

You can perform any front-end actions during testing. Each test user dynamically supports both successful and failed outcomes, reflected in the session's back-end status.

## Sandbox Environment Access

Your sandbox credentials and base URI will be provided during onboarding. The sandbox environment includes:

* **API Endpoints**: Same as production but with test data
* **Dashboard Access**: Client dashboard instance for UI familiarization
* **Test Data**: Predefined scenarios with known outcomes
* **Event Simulation**: Full event flow testing capabilities

## Authentication

Use your sandbox credentials exactly as you would in production:

1. Include your API key in the `x-api-key` header and your client ID in the `x-client-id` header
2. Use these headers for all API calls during testing

## Next Steps

Once you understand the sandbox basics:

1. **[Test Scenarios](/guides/pay/geft/test-scenarios)**: Learn about specific test cases and user flows
2. **[Testing Best Practices](/guides/pay/geft/testing-best-practices)**: Implement automated testing
3. **[Production Readiness](/guides/pay/geft/production-readiness)**: Verify you're ready to go live

## Related Documentation

* **[Setup Guide](/guides/pay/geft/setup-flinks-pay)**: Implementation steps
* **[Event Handling](/guides/pay/geft/event-handling)**: Frontend event integration
* **[API Reference](/api/pay/endpoints/geft/index)**: Complete API documentation