# OMNO API Reference

Welcome to the **OMNO API Reference**, your comprehensive guide to integrating with our payment orchestration platform.

## Available APIs

OMNO provides several API services to manage payment transactions, customer sessions, and authentication:

### Payments API

Our core Payments API enables you to process transactions across multiple payment service providers (PSPs) through a
single integration. The API supports:

- **Pay-In Operations**: Accept payments from customers
- **Pay-Out Operations**: Send funds to customers
- **Cashier Session Management**: Create unified checkout experiences


### Authentication API

The Authentication API provides secure access to OMNO services using the OAuth 2.0 framework with client credentials
flow.

## API Environments

| Environment | Base URL | Description |
|  --- | --- | --- |
| Production | https://api.omno.com | Live production environment |
| Sandbox | https://api.omno.dev | Test environment for integration |


## Key Concepts

### Transaction Flow

1. **Creation**: Initiate a transaction with customer and payment details
2. **Processing**: OMNO routes the transaction to the optimal PSP
3. **Confirmation**: For certain operations, explicit confirmation may be required
4. **Status Updates**: Monitor transaction status via API or webhooks


### Authentication

All API requests require authentication using OAuth 2.0 tokens. To authenticate:

1. Obtain client credentials from the OMNO dashboard
2. Request an access token using the client credentials grant type
3. Include the token in the Authorization header for all API calls


## Getting Started

To begin integrating with OMNO APIs:

1. Register for an account at [OMNO Dashboard](https://cockpit.omno.com)
2. Generate API credentials in the Developer section
3. Implement the authentication flow
4. Start creating test transactions in the sandbox environment


## Support

For technical assistance with API integration, please contact our support team
at [support@omno.com](mailto:support@omno.com).