Create an Internal API in 10 min to solve common problems in your company

There are excellent tools we use internally in a company like Postman or excellent libraries but they are only available in one language, or sometimes we want to perform an algorithm to return something specific like a random string following a pattern.

The problem we face many times is the limitations of those apps, libraries, resources… don’t allow us to easily integrate them. The easy and fast solution is to create a simple API that will be accessible from everywhere inside your network.

I will use in this example a Sinatra app that will create an API accepting requests for generating random strings and JSON following patterns supplied. All you need is Ruby 2.4+, and then install the next gems:

Then create a file with any name, for example: api.rb with this content:

Run in command line / bash:

Now you will be able to access your API everywhere inside your network.

For example, if you go to a browser and write this: mycomputername:4567/gen?pattern=20–50:@&num=30 will generate 30 emails from 20 to 50 characters.

More info:

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