Contribute to Postman

(pre: I have tried to find the way to contribute or try to fork and play with postman sources, but have no success)
want to ask about the postman test block - how its works with request/response life cycle. Is there a way to contribute/develop to this part?
I want to investigate is postman test bock capable to interact with with kotlin


Hey @goodvin4 - I am so glad you asked this. Postman is powered in its core using a module called “postman-runtime” - it, on the other hand, depends on a number of very interesting modules like Postman Sandbox (for executing test block) and Postman Collection (to process collections).

A good portion of how Postman Runtime works is outlined in the tutorials section at - and the API for using Postman Collection SDK is at We’ve attempted to document the codebase inline to the best we could.

If kotlin can be transpiled to JS (https[colon]//kotlinlang[dot]org/docs/tutorials/javascript/kotlin-to-javascript/kotlin-to-javascript.html) you can do the following:

  1. Look for script: type=text/kotlin in collection script inside sandbox
  2. transpile it to JS inside sandbox
  3. then send to UVM module (which sandbox uses) for execution like any other script.

However, we are not yet planning to support JS-transpilable languages in Postman app yet, not at least what I know of. :slight_smile:


  • https[colon]//github[dot]com/postmanlabs/postman-runtime/
  • https[colon]//github[dot]com/postmanlabs/postman-sandbox
  • https[colon]//github[dot]com/postmanlabs/postman-collection

PS: You’ll have to replace [dot] and [colon] in places where I had to do them since new users can only post a few links. :wink:

@shamasis sorry but for me it was not enough clear if we can contribute to Postman, like implementing a new button on front-end then implementing it back-end functionality, then after sending a pull request… Is there guidelines to this?
Thanks in advance