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

> Request Sandbox credentials and set up a test environment to build and validate your Meridian integration before going live.

# Request a Sandbox

## Requesting Sandbox credentials

Meridian provisions Sandbox access on request. To get started, contact your Solutions Engineer and provide the following:

* Your organization's name and country of operation
* A technical point of contact (name and email)
* The webhook URL you'd like Meridian to deliver transaction events to
* The customer support site URL for your tech support team (if you have one)
* The Credit API endpoint details for any withdrawal requests
* Your company logo
* Your primary and secondary brand colors (hex values preferred)
* Your preference for whether Meridian should Auto-sweep USD funds from Virtual Accounts to local linked accounts

Once Meridian receives this information, it provisions your Sandbox environment — including your branded UI configuration — and delivers your credentials securely.

## What you'll receive

Upon provisioning, Meridian securely provides:

* **API Key** — used in the `X-Meridian-Api-Key` header on all session API requests
* **API Secret** — used to compute the HMAC SHA-256 request signature
* **Webhook API Key and Secret** — a separate key pair used exclusively for authenticating inbound webhook events

These credentials are specific to your Sandbox environment. Meridian issues production credentials separately as part of the go-live process.