How to create an API with #nocode?

Here's how I did it with n8n.io .
A few weeks ago, I created a simple slack bot that regularly checks Google's ranking for my projects. https://twitter.com/ivbran/status/1453395779473739780
However, I sometimes wanted to be able to check other keywords, but I didn't want to open n8n every time.
So I decided to create an API with n8n and just create a bubble.io web app where I can enter keywords and websites that I want to check. Integration was simple:

Since I already have a workflow in place to find the ranking position, all I had to do was activate a webhook node in n8n and activate "Last node finishes".

When this is enabled, the Webhook will return the specified response code along with the output from the last node executed in the workflow.
I added a SET node at the end of the workflow, where I set three values (position, keyword, url) that I want to return in response to the API call.
And here is the final workflow for a SERP API and slack bot:

