> For the complete documentation index, see [llms.txt](https://docs.idlayr.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.idlayr.com/products/number-verification/discovery/testing.md).

# Testing in sandbox

{% hint style="info" %}
**Device API** · NV 1.0 · Early Access
{% endhint %}

{% hint style="warning" %}
Sandbox mode is not currently available for Discovery.
{% endhint %}

The platform's sandbox behaviour keys off the phone number the caller submits, and Discovery Check takes no phone number on Create. Adding sandbox support for Discovery is tracked as ENG-1457, and this page will be updated with the sandbox contract when that lands.

## Testing today

Until sandbox support is in place, exercise Discovery against a real device on a supported cellular network in a production project. See:

* [Prerequisites](/products/number-verification/discovery/prerequisites.md) — what you need in place before making the first call.
* [Integration](/products/number-verification/discovery/integration.md) — end-to-end walkthrough on iOS, Android, and your backend.
* [How it works](/products/number-verification/discovery/how-it-works.md) — the flow, roles, and the code round-trip between the SDK, your app, your backend, and IDlayr.

For the cross-product sandbox model, and the sandbox contracts of the other v1 products (Secure SNA, Reverse SMS, SIM Swap, Eligibility), see [Sandbox testing](/get-started/sandbox-testing.md).


---

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