Is there a way to write scripts in RSA Archer so Archer can call an API to trigger other web applications?

I am trying to trigger a function developed in a web application when a record in RSA Archer is updated, for example Control Procedure records. But we are not allowed to call API outside RSA Archer (such as Python PyPl)

Does RSA Archer have a function or place where I can write some custom scripts and execute it?

Well you can use a custom object within the application and use JavaScript to make the API calls.