curl --request POST \
  --url https://api.nops.io/v1/cost-allocation \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "name": "Engineering",
  "valueSource": "rules"
}
'

import requests

url = "https://api.nops.io/v1/cost-allocation"

payload = {
    "name": "Engineering",
    "valueSource": "rules"
}
headers = {
    "Idempotency-Key": "<idempotency-key>",
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {
    'Idempotency-Key': '<idempotency-key>',
    Authorization: 'Bearer <token>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({name: 'Engineering', valueSource: 'rules'})
};

fetch('https://api.nops.io/v1/cost-allocation', 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"

	payload := strings.NewReader("{\n  \"name\": \"Engineering\",\n  \"valueSource\": \"rules\"\n}")

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

	req.Header.Add("Idempotency-Key", "<idempotency-key>")
	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": {
    "showback": {
      "id": 1,
      "name": "Engineering",
      "active": true,
      "allocationTagType": null,
      "tagKeys": [],
      "extraValues": [],
      "hideValues": [],
      "removedShowbackValues": [],
      "baseFilterJson": null,
      "isLocked": false,
      "created": "2026-07-17T12:00:00.000Z",
      "modified": "2026-07-17T12:00:00.000Z",
      "ruleCount": 2
    }
  }
}

{
  "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"
  }
}