Mock sample for your project: Big Red Cloud API

Summary
The Swiss NextGen API is based on the NextGenPSD2 Framework Version 1.3.4 of the Berlin Group which offers a modern, open, harmonised and interoperable set of
Application Programming Interfaces (APIs) as the safest and most efficient way to provide data securely.
The NextGen Framework reduces XS2A complexity and costs, addresses the problem of multiple competing standards
in Europe and, aligned with the goals of the Euro Retail Payments Board,
enables European banking customers to benefit from innovative products and services ('Banking as a Service')
by granting TPPs safe and secure (authenticated and authorised) access to their bank accounts and financial data.
The Swiss edtion refines the message formats specific to Switzerland and defines some matching examples.
The possible Approaches are:
Redirect SCA Approach
(Not recommended by obp.ch community) OAuth SCA Approach
(Not recommended by obp.ch community) Decoupled SCA Approach
(Not recommended by obp.ch community) Embedded SCA Approach without SCA method
(Not recommended by obp.ch community) Embedded SCA Approach with only one SCA method available
(Not recommended by obp.ch community) Embedded SCA Approach with Selection of a SCA method
Not every message defined in this API definition is necessary for all approaches.
Furthermore this API definition does not differ between methods which are mandatory, conditional, or optional
Therefore for a particular implementation of a compliant API it is only necessary to support
a certain subset of the methods defined in this API definition.
**Please have a look at the implementation guidelines if you are not sure
which message has to be used for the approach you are going to use.**
Some General Remarks Related to this version of the OpenAPI Specification:
This API definition is based on the Implementation Guidelines of the Berlin Group API.
It is not a replacement in any sense.
The main specification is (at the moment) always the Implementation Guidelines of the Berlin Group API.
This API definition contains the REST-API for requests from the PISP to the ASPSP.
This API definition contains the messages for all different approaches defined in the Implementation Guidelines.
According to the OpenAPI-Specification [https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.1.md]
"If in is "header" and the name field is "Accept", "Content-Type" or "Authorization", the parameter definition SHALL be ignored."
The element "Accept" will not be defined in this file at any place.
The elements "Content-Type" and "Authorization" are implicitly defined by the OpenApi tags "content" and "security".
There are several predefined types which might occur in payment initiation messages,
but are not used in the standard JSON messages in the Implementation Guidelines.
Therefore they are not used in the corresponding messages in this file either.
We added them for the convenience of the user.
If there is a payment product, which needs these fields, one can easily use the predefined types.
But the ASPSP need not to accept them in general.
**We omit the definition of all standard HTTP header elements (mandatory/optional/conditional)
except they are mentioned in the Implementation Guidelines.**
Therefore the implementer might add these in his own realisation of a comlient API in addition to the elements defined in this file.
General Remarks on Data Types
The Berlin Group definition of UTF-8 strings in context of the API have to support at least the following characters
a b c d e f g h i j k l m n o p q r s t u v w x y z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
0 1 2 3 4 5 6 7 8 9
/ - ? : ( ) . , ' +
Space

Introduction
The Xero Accounting API is a RESTful web service and uses the OAuth (v1.0a) protocol to authenticate 3rd party applications. The Accounting API exposes accounting and related functions of the main Xero application and can be used for a variety of purposes such as creating transactions like invoices and credit notes, right through to extracting accounting data via our reports endpoint.

Chaingateway.io
REST API to build the bridge between Ethereum and the real world
Please check out our website for detailed information about this API.
To use our API, you need an API Key (Described as Authorization header in the examples below).
To get one, please create an account on our website.
For our internal documentation, please check out our Docs Site.
If you need help with integrating our API in your application, you can reach us via email or join our official Telegram group.

Stock and Forex Data and Realtime Quotes

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

Welcome to the Big Red Cloud API
This API enables programmatic access to Big Red Cloud data.
We have used Swagger to auto generate the API documentation on this page, and it also enables direct interaction with the API in this page.
To get started, you will require an API Key - check out our guide at https://www.bigredcloud.com/support/generating-api-key-guide/ for information on how to get one.
Use the 'Enter API Key' button below to enter your API key and start interacting with your Big Red Cloud data right on this page.
The API key will be stored in your browsers local storage for convenience, but you will be able to delete it at any time if you wish.
For additional information on the API, check out our support article at https://www.bigredcloud.com/support/api/

API Interface to retrieve company data and products from business registers

An API for accessing the NaviPlan Fact Finder.

Swagger for Payment Initiation API Specification

The Plaid REST API. Please see https://plaid.com/docs/api for more details.