Hi @fkseki ,

Since filter_by is an object parameter in a GET request, I think that you need to convert it to a JSON string when passing it as a query parameter. Try to do something like this:

filter_by_json = json.dumps({"policy_name": "aaaa"})
params = {"filter_by": filter_by_json}
response = requests.get(url=url, headers=headers, params=params)

Hi @fkseki 

The filter_by parameter is functional, but the error you’re seeing is because you’re passing it as a
Python dict in params — which requests will serialize into query string format — whereas the API
expects a JSON object in the request body for this particular endpoint.

For the list call in the Databricks Budget Policy API, filter_by isn’t a plain query parameter; it’s part
of the request payload (POST), even though it’s a “list” operation

import requests
import json

url = f"https://accounts.azuredatabricks.net/api/2.1/accounts/{account_id}/budget-policies/list"

headers = {
    "Authorization": f"Bearer {TOKEN}",
    "Accept": "application/json",
    "Content-Type": "application/json"
}

payload = {
    "filter_by": {
        "policy_name": "aaaa"
    }
}

response = requests.post(url, headers=headers, data=json.dumps(payload))
print(response.status_code, response.text)

Key differences from your attempt:
The method should be POST, not GET.
The filter_by object should be in the request body as JSON, not in params.
The URL is usually <...>/budget-policies/list rather than just /budget-policies.

Thanks for the reply, @szymon_dybczak and @lingareddy_Alva.

I tried both approaches but none was successful.

url = f'{account_url}/api/2.1/accounts/{account_id}/budget-policies'

filter_by_json = json.dumps({"policy_name": "aaaa"})
params = {"filter_by": filter_by_json}

headers = {
 'Authorization': f'Bearer {TOKEN}',
 'Accept': 'application/json',
 'Content-Type': 'application/json'
}

response = requests.get(url=url, headers=headers, params=params)

params = {"filter_by":{"policy_name":"aaes"}}
response = requests.post(url=url, headers=headers, data=json.dumps(params))

For the post method, I tried with and without the "/list" at the end of the endpoint.

With it I got an ENDPOINT_NOT_FOUND error

Without it, the INVALID_PARAMETER_VALUE error, probably because this endpoint with POST method is to be used to create a new budget policy

'error_code': 'INVALID_PARAMETER_VALUE', 'message': 'Invalid policyName - policy name cannot be empty'

Wonderful! It works! Thank you very much, I tried many different ways but didn't think to test this one, though.

No problem @fkseki. It was interesting, but at the same time frustrating experience 😄 Good that we managed to solve it.

@szymon_dybczak, you are a legend, saved me a lot of time.