# Montonio API Documentation

> Montonio developer documentation for payments and shipping integration.

Montonio provides payments (Bank Payments/PIS, Cards, Apple Pay, Google Pay, MobilePay, BLIK, Financing, etc.) and shipping for online merchants in the Baltics, Finland, and Poland. There are two ways to integrate: ready-made e-commerce plugins (WooCommerce, Magento, PrestaShop, and others — see https://montonio.com/integrations) or a custom integration against the REST APIs listed below.

## Getting started (custom integration)

1. Get API keys from the Partner System (https://partner.montonio.com). Keys come in two environments: Sandbox (for testing) and Production.
2. Read the product overview: /api/stargate/overview.md (payments) or /api/shipping-v2/overview.md (shipping).
3. Authenticate. Requests are authorized with a JSON Web Token (JWT) signed with your Secret Key using HS256; your Access Key identifies the store.
4. For payments, work through the integration checklist (/api/stargate/checklist.md), then follow /api/stargate/guides/orders.md to create and validate an order and /api/stargate/guides/payment-methods.md to display methods.

/llms-full.txt contains the entire documentation inlined in a single file. Questions: support@montonio.com. Find detailed guides for each topic here:

## Payments API (Stargate)
- [API changes](/api/stargate/changes.md)
- [Integration checklist](/api/stargate/checklist.md)
- [Using the AUTHORIZED status](/api/stargate/guides/authorized-status.md)
- [Embedded BLIK in checkout](/api/stargate/guides/embedded-blik.md)
- [Embedded BLIK in checkout (custom integration)](/api/stargate/guides/embedded-blik-custom.md)
- [Embedded BLIK Custom Flow Diagram](/api/stargate/guides/embedded-blik-custom-diagram.md)
- [Embedded Cards in checkout](/api/stargate/guides/embedded-cards.md)
- [Embedded cards migration guide for plugins](/api/stargate/guides/embedded-cards-plugins-migration.md)
- [Financing payment methods](/api/stargate/guides/financing.md)
- [Create and validate an Order](/api/stargate/guides/orders.md)
- [Payment links](/api/stargate/guides/payment-links.md)
- [Display payment methods](/api/stargate/guides/payment-methods.md)
- [Retrieve payout report statements](/api/stargate/guides/payouts.md)
- [Refund an Order](/api/stargate/guides/refunds.md)
- [Listen to webhooks](/api/stargate/guides/webhooks.md)
- [Payments](/api/stargate/overview.md)
- [API reference](/api/stargate/reference.md)
- [UI widgets](/api/stargate/widgets.md)

## Shipping API (v2)
- [Creating a Label File](/api/shipping-v2/guides/labels.md)
- [Using the sandbox environment](/api/shipping-v2/guides/sandbox.md)
- [Creating and updating Shipments](/api/shipping-v2/guides/shipments.md)
- [Fetching Shipping Methods](/api/shipping-v2/guides/shipping-methods.md)
- [Creating a Webhook](/api/shipping-v2/guides/webhooks.md)
- [Shipping](/api/shipping-v2/overview.md)
- [Shipping](/api/shipping-v2/reference.md)