This is an basic example project for testing mercadopago payments capture APIs
In the index directory of the project you will find a index.html. This html doesn't required any npm packages to work because mercadopago dependecies are imported on the html. But this project contains also a basic NODEJS API. For this api you will need to install express and body-parser dependencies.
Just run npm install and later npm start to initialize API
By default API runs over port 9000
THE API contantains two simple routes POST /pay and PUT /capture
The first one /pay is used by the client mercadopago form and the second one /capture you have to send a http request manually to that endpoint
When you create an payment using the client form, the payment result is saved in a file payments.json inside /payments folder in the root directory.
Each payment created have a paymentId. You must to send that parammeter paymentId when you hit to PUT /capture endpoint to capture the payment