curl --request POST \
  --url https://api.nops.io/v1/cost-allocation/{id}/rules/dimension-preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "dimension": "billing_account_name",
  "costDistribution": {
    "Production": 75,
    "Staging": 25
  }
}
'

import requests

url = "https://api.nops.io/v1/cost-allocation/{id}/rules/dimension-preview"

payload = {
    "dimension": "billing_account_name",
    "costDistribution": {
        "Production": 75,
        "Staging": 25
    }
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    dimension: 'billing_account_name',
    costDistribution: {Production: 75, Staging: 25}
  })
};

fetch('https://api.nops.io/v1/cost-allocation/{id}/rules/dimension-preview', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.nops.io/v1/cost-allocation/{id}/rules/dimension-preview"

	payload := strings.NewReader("{\n  \"dimension\": \"billing_account_name\",\n  \"costDistribution\": {\n    \"Production\": 75,\n    \"Staging\": 25\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

{
  "data": {
    "preview": [
      {
        "value": "Production",
        "percent": 75,
        "spend": 31575.66
      },
      {
        "value": "Staging",
        "percent": 25,
        "spend": 10525.22
      }
    ]
  }
}

{
  "error": {
    "code": "forbidden_scope",
    "message": "API key is missing required scope: budgets:write",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}

{
  "error": {
    "code": "forbidden_scope",
    "message": "API key is missing required scope: budgets:write",
    "request_id": "550e8400-e29b-41d4-a716-446655440000"
  }
}