Mock sample for your project: Square Connect API

The BIN Lookup API provides endpoints for retrieving information, such as cost estimates, and 3D Secure supported version based on a given BIN.

The Hosted onboarding API provides endpoints that you can use to generate links to Adyen-hosted pages, such as an onboarding page or a PCI compliance questionnaire. Then you can provide the link to your account holder so they can complete their onboarding.
Authentication
To connect to the Hosted onboarding API, you must use basic authentication credentials of your web service user. If you don't have one, contact our Support Team. Then use your credentials to authenticate your request, for example:

This is an API designed for merchants who are using SpectroCoin services and wishes to integrate them locally.

The Test Cards API provides endpoints for generating custom test card numbers. For more information, refer to Custom test cards documentation.

The Recurring APIs allow you to manage and remove your tokens or saved payment details. Tokens should be created with validation during a payment request.
For more information, refer to our Tokenization documentation.
Authentication
To connect to the Recurring API, you must use your basic authentication credentials. For this, create your web service user, as described in How to get the WS user password. Then use its credentials to authenticate your request, for example:

A set of API endpoints that allow you to initiate, settle, and modify payments on the Adyen payments platform. You can use the API to accept card payments (including One-Click and 3D Secure), bank transfers, ewallets, and many other payment methods.
To learn more about the API, visit Classic integration.
Authentication
To connect to the Payments API, you must use your basic authentication credentials. For this, create your web service user, as described in How to get the WS user password. Then use its credentials to authenticate your request, for example:

Client library for accessing the Square Connect APIs

The Balance Platform Transfers API provides an endpoint that you can use to move funds within your balance platform, or to send funds from your balance platform to a transfer instrument.
For information on how the API is used in Adyen Issuing, refer to Manage funds.
Authentication
Your Adyen contact will provide your API credential and an API key. To connect to the API, add an X-API-Key header with the API key as the value, for example:
Going live
When going live, your Adyen contact will provide your API credential for the live environment. You can then use the username and password to send requests to https://balanceplatform-api-live.adyen.com/btl/v1.
For more information, refer to our Going live documentation.

The Balance Platform API enables you to create a platform, onboard users as account holders, create balance accounts, and issue cards.
For information about use cases, refer to Adyen Issuing.
Authentication
Your Adyen contact will provide your API credential and an API key. To connect to the API, add an X-API-Key header with the API key as the value, for example:
Going live
When going live, your Adyen contact will provide your API credential for the live environment. You can then use the API key or the username and password to send requests to https://balanceplatform-api-live.adyen.com/bcl/v1.
For more information, refer to our Going live documentation.

https://www.beanstream.com/api/v1

A web service containing utility functions available for merchants integrating with Checkout APIs.
Authentication
Each request to the Checkout Utility API must be signed with an API key. For this, obtain an API Key from your Customer Area, as described in How to get the Checkout API key. Then set this key to the X-API-Key header value, for example: