Question 1

Which is better, Account and Transaction API Specification - UK or LianLian Pay (连连支付)?

Accepted Answer

If you need a Finance API that's easy to integrate, go with LianLian Pay (连连支付). Account and Transaction API Specification - UK uses apiKey while LianLian Pay (连连支付) uses no authentication.

Question 2

What is the main difference between Account and Transaction API Specification - UK and LianLian Pay (连连支付)?

Accepted Answer

Account and Transaction API Specification - UK: ## Functionality at a glance

The NBG "UK OPB - Account and Transaction v3.1.5" API follows the [UK Open Banking Specification
    v3.1.5](https://openbankinguk.github.io/read-write-api-site3/v3.... LianLian Pay (连连支付): Cross-border payment platform — international settlements, merchant services, e-wallet. REST API. They differ in authentication (apiKey vs no authentication), HTTPS support (yes vs yes), and CORS (unknown vs unknown).

Question 3

Which Finance API is easier to integrate?

Accepted Answer

LianLian Pay (连连支付) is easier to integrate because it requires no authentication.

Feature	Account and Transaction API Specification - UK	LianLian Pay (连连支付)
Authentication	apiKey	None
HTTPS	Yes	Yes
CORS	Unknown	Unknown

Account and Transaction API Specification - UK vs LianLian Pay (连连支付)

Account and Transaction API Specification - UK

LianLian Pay (连连支付)

When to use which?