Webhooks

In order for both you and Meld to receive transaction status notifications and updates, you must set up webhooks for your service providers, as shown in the webhooks quickstart.

Environments

Meld offers both production and sandbox environments. The below table contains the base widget URL for each environment:

Whitelisting

Certain service providers require whitelisting Meld's URLs or IP addresses to allow their widgets to load within Meld's iframe. Currently, Mesh is the only crypto provider that equires whitelisting. You should whitelist Meld's URLs (https://www.meldcrypto.com, https://sb.meldcrypto.com, https://meldcrypto.com) yourself through the respective partner dashboards.

Here is can example of how to whitelist those urls on Mesh's dashboard:

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Security Policies

In some cases, you should be launching Meld's crypto widget or Meld's crypto wizard in its own tab, rather than within an iframe or webview. This is due to the security policies of specific providers. If you are using your own accounts for those providers or using other providers, then as long as you whitelist the urls you can launch the widget or wizard however you want.