---
updatedAt: 2025-09-08T20:07:13.000Z
agentTools:
  projectIndex: https://docs.fonoa.com/llms.txt
---

# Environments

Fonoa API supports three environments - demo, sandbox, and production.

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#### **Fonoa API Sandbox**

* Unlimited usage. Serves hardcoded data instead of real integrations with the tax authorities. [See more here](https://docs.fonoa.com/reference/sandbox-environment).
* Base URL: <https://sandbox.fonoa.com/>

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#### **Fonoa API Demo**

* Limited usage.
* Base URL: <https://api-demo.fonoa.com/>

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#### **Fonoa API Production**

* The environment you should use in your live integration.
* Base URL: <https://api.fonoa.com/>

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API keys (primary and secondary) can be obtained by contacting Fonoa directly via email <info@fonoa.com> .

> 🚧
>
> In order to allow users to test our products, endpoints on this page point to the **demo** environment (URL: api-demo.fonoa.com). Once you obtain the API key for the production environment, you must switch the URLs of endpoints to api.fonoa.com.