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

# Testing and Debugging

> Developer tools for testing and debugging bank linking connections

Meld provides two primary tools to help you validate connections before going live and diagnose issues after launch.

* [Sandbox Testing Guide](/docs/bank-linking/testing-and-debugging/bank-linking-sandbox-testing-guide): test institutions, credentials, and tips for testing with Meld and each bank linking service provider in sandbox.
* [Activity Log](/docs/bank-linking/testing-and-debugging/debugging-activity-log): search and review raw connection-level data exchanged between Meld and service providers.