PowerAutomate Dummy Custom Code Connector

With the announcement of the new Power Automate Custom Code approach for Custom Connector I still wanted to test the theory whether we would be able to create our own small logic without being tied to the calls for API service.

And it looks like this is exactly the case with the current version. I have implemented a dummy connector that simulates a call to a third-party service, although in reality it only uses our custom logic Example repo

And how can we get this on the example of the long-awaited functionality of string hash:

Find any existing open API without key/auth requirement that may accept additional query/body parameters or website.

Add a definition for your Action

Enable Swagger editor to pass a few additional parameters

And pass you Script code that will intercept the call and transform it in a way that suits you

Well and check the result of your work.

Few notes to keep in mind:

Internal logic will check DNS records and availability of the resources used - So you need some real and working URL to simulate the request.

Code update takes some time. Your first request may fail after the update.

Sometimes custom code is disabled after edits of the connector. Try to make changes to code(add space) and Update it again.

You may need to manually specify used namespaces and check that your code consumed only allowed.