Hi @HavivO.09641 (Customer)​ , Thank you for reaching out to the Okta Community! 

Please note that providing custom scripting is outside of Okta Support scope. 

That being said, I can try to provide some general advice.  

If you are looking for a simple rule like 

IF users are part of GroupA THEN Assign to GroupB

You will need to leverage the involved group IDs in the request. 

Here is an API request example where 00g144wasdfljB1r0x8 and 00g144xtwasdvcRcO0x8 are the respective group IDs : 

curl -v -X POST \

-H "Accept: application/json" \

-H "Content-Type: application/json" \

-H "Authorization: SSWS ${api_token}" \

-d '{

  "type": "group_rule",

  "name": "API_GroupRuleTEST",

  "conditions": {

    "expression": {

      "value": "isMemberOfAnyGroup(\"00g144wasdfljB1r0x8\")",

      "type": "urn:okta:expression:1.0"

    }

  },

  "actions": {

    "assignUserToGroups": {

      "groupIds": [

        "00g144xtwasdvcRcO0x8"

      ]

    }

  },

  "allGroupsValid": true

}

Please note that newly created group rules are always INACTIVE. You'll need to run a separate request .  

https://developer.okta.com/docs/reference/api/groups/#activate-a-group-rule

If my answer helped, remember to mark it as best to increase its visibility for other members of the Okta Community who might have the same questions as you. 

Hope my answer helps! 

--

Help others in the community by liking or hitting Select as Best if this response helped you.

i tried the Python example in the docs. it took a bit of work to get it to run.

here's a better version. the lines that are commented out are optional. uncomment them (and complete them) if you like.

i also recommend using requests.Session() for better performance.

import requests

your_okta_domain = "subdomain.okta.com"

url = "https://" + your_okta_domain + "/api/v1/groups/rules"

token = 'YOUR_API_TOKEN_HERE'

# session has better performance

session = requests.Session()

session.headers['authorization'] = 'SSWS ' + token

rule = {

 "name": "py group rule 1",

 "actions": {

  "assignUserToGroups": {

   "groupIds": [

    "00g..."

   ]

  }

 },

 "conditions": {

  "expression": {

   "type": "urn:okta:expression:1.0",

   "value": "..."

  },

  # "people": {

  #  "groups": {

  #   "exclude": [

  #    "string"

  #   ],

  #   "include": [

  #    "string"

  #   ]

  #  },

  #  "users": {

  #   "exclude": [

  #    "string"

  #   ],

  #   "include": [

  #    "string"

  #   ]

  #  }

  # }

 },

 "type": "group_rule"

}

response = session.post(url, json=rule)

new_rule = response.json()

print(new_rule)