# PaySimple Developer Portal Documentation

> Documentation for PaySimple Developer Portal

## Guides
- [Welcome](https://documentation.paysimple.com/docs/welcome.md)
- [Security and Compliance](https://documentation.paysimple.com/docs/security-and-compliance.md)
- [Sandbox](https://documentation.paysimple.com/docs/sandbox.md): BASE API URL: https:<nolink>//sandbox-api.paysimple.com UI URL: https://sandbox-payments.paysimple.com/login/login
- [Vaulting Accounts and Making Payments](https://documentation.paysimple.com/docs/paysimplejs-getting-started.md)
- [Code Sample](https://documentation.paysimple.com/docs/paysimplejs-getting-started-code-sample.md): Vaulting Accounts and Making Payments
- [Working with Existing Customers](https://documentation.paysimple.com/docs/paysimplejs-working-with-existing-customers.md): Collecting payments and updating existing account details
- [Code Sample](https://documentation.paysimple.com/docs/paysimplejs-working-with-existing-customers-code-sample.md): Collecting payments and updating existing account details
- [Stripe - 3D Secure Authentication](https://documentation.paysimple.com/docs/3d-secure-authentication.md): The following is only supported for Stripe Processing
- [Product 3 Processing](https://documentation.paysimple.com/docs/product-3-processing.md)
- [Authorization](https://documentation.paysimple.com/docs/authorization.md)
- [Hosted Payment Links](https://documentation.paysimple.com/docs/hosted-payment-links.md)
- [Webhooks](https://documentation.paysimple.com/docs/webhooks.md)
- [Payment Events](https://documentation.paysimple.com/docs/payment-events.md)

## API Reference
- [Trying our API using Postman](https://documentation.paysimple.com/reference/postman.md)
- [Authentication and Authorization](https://documentation.paysimple.com/reference/authentication-overview.md)
- [Legacy Authorization](https://documentation.paysimple.com/reference/legacy-authorization.md)
- [List Customers](https://documentation.paysimple.com/reference/list-customers.md): Sortable list of all customers.
- [New Payment](https://documentation.paysimple.com/reference/new-payment.md): Collect a payment for the specified `AccountId`.
- [Payment Response](https://documentation.paysimple.com/reference/payment-object.md)
- [Payment Statuses](https://documentation.paysimple.com/reference/payment-statuses.md): Indicates the current state of the Payment object.