---
updatedAt: 2026-06-10T09:39:17.000Z
agentTools:
  projectIndex: https://docs.neonomics.io/llms.txt
---

# Getting started

Learn how to register as a Merchant with Nello Pay.

> 👍 It's never been easier to get started with open banking payments.

<Image align="center" src="https://files.readme.io/4923771f5253afb35d43d1c6cc996785c1c6e241d5cf61272eae9f2783074d16-Group_2124.png" />

Welcome to our self-onboarding guide for Nello Pay. This guide provides the necessary steps and best practices for a smooth and speedy integration. By the end, you will be able to test and validate integration before deploying to production. And don't forget - our customer success team is always here to help you every step of the way.

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# Introduction

The following steps must be completed in order to proceed with self-onboarding:

1. **Register with the [Merchant Portal](https://merchant.neonomics.io/auth/login)**
2. **Test and integrate NelloPay with our sandbox API**
3. **Fill out the customer due diligence form**
4. **Integrate with NelloPay production API**

Once you have completed these simple steps, you are ready to kickstart your Nello Pay journey.

# Integration

The [Merchant Portal](https://merchant.neonomics.io/auth/login) has both sandbox and production views. Once you have access to production access, you will be able to toggle between both environments.

<Image align="center" width="200px" src="https://files.readme.io/e0ff0be340bc0f670ea8ca163115630eea980e89b4c90450027cb055d91fff38-Screenshot_2026-06-10_at_11.33.41.png" />

## Sandbox

Sandbox is a test environment that uses the bank's open banking environments. *Testing Resources:* Sandbox testing information can be found [here](https://docs.neonomics.io/docs/sandbox-testing)

### Setup Steps:

1. **[Sign up](https://merchant.neonomics.io/auth/login)**
2. **Navigate** to Company settings
3. **Find** your Integration information, URL, and API key
4. **Integrate** [Nello Pay](https://docs.neonomics.io/docs/payment-getting-started) by following the integration steps
5. **Integrate** the [Webhook](https://docs.neonomics.io/docs/webhook-payment-status-updates) payment status updates *(optional)*
6. **Test and integrate** with the NelloPay sandbox API and Webhook.

## Production

Production connects to the bank's production environments.

### Getting production access

1. Fill out the **customer due diligence** form and submit for review.
2. Received communication from Neonomics with **feedback and a contract to sign**.
3. Neonomics **approves your organisation** to go live, and you get production access.
4. **Integrate with the production API**, use the production endpoint, API key and webhook.
5. **Go live** with NelloPay.

<br />

### Design Guidelines

In our [Neonomics Brand guidelines](https://docs.neonomics.io/docs/design-guidelines), you will find all you need for the visuals: Logo, Color, and Typography.

**Visual Implementation:**

* Use our **circular logo** with the color variation that stands out in your UI
* Add descriptive text, for example: **"Pay by Bank"**
* Follow our brand guidelines for consistent styling

## Production Integration

> ⚠️ **Prerequisites:** You must have a signed contract with Neonomics to access the Production environment.

**Setup Process:**

1. **[Sign up](https://merchant.neonomics.io/auth/register)** for production access
2. **Wait for approval** - The Customer Success team will approve your user and send a confirmation email
3. **Navigate** to Company settings
4. **Fill in** your company information under Details
5. **Update** your Integration information - replace Sandbox URL and API key with Production credentials
6. **Deploy** [Nello Pay](https://docs.neonomics.io/docs/payment-getting-started) integration to production
7. **Integrate** the [Webhook](https://docs.neonomics.io/docs/webhook-payment-status-updates) payment status updates *(optional)*

> 📘 **Stay Updated:** Subscribe to our [status page](https://status.neonomics.io/) to follow connectivity status.

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# Live Testing and Launch

## Pre-Launch Testing

After completing the integration, we recommend you test and validate your product to ensure it works as expected.

**Testing Requirements:**

* **Real bank accounts** and individuals with local authorization methods (BankID, MitID, etc.)
* **End-to-end live tests** with at least **3 different bank groups** in your target country
* **Complete payment flows** from initiation to completion

## Launch Coordination

**Before going live:**

1. **Complete** comprehensive testing across multiple bank groups
2. **Schedule** a sync with your Neonomics Customer Success team contact
3. **Review** the complete flow together
4. **Notify** the team of your planned launch date

## Mobile App Implementation

<Callout icon="💡" theme="default">
  ### **Best Practice:** For the optimal user experience in mobile apps, redirect users to a dedicated browser rather than using an in-app browser.
</Callout>

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**Ready to get started?** Choose your environment above and begin with account registration. Our team is here to support you every step of the way!