curl -X POST \
  https://us.api.hellotars.com/api/campaigns/YOUR_CAMPAIGN_ID/validate \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{ "to": "+15551234567", "params": { "order_id": "A-1042" } }'

const response = await fetch(
  "https://us.api.hellotars.com/api/campaigns/YOUR_CAMPAIGN_ID/validate",
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.TARS_API_KEY}`,
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      to: "+15551234567",
      params: { order_id: "A-1042" }
    })
  }
);

const data = await response.json();

import os
import requests

response = requests.post(
    "https://us.api.hellotars.com/api/campaigns/YOUR_CAMPAIGN_ID/validate",
    headers={
        "Authorization": f"Bearer {os.environ['TARS_API_KEY']}",
        "Content-Type": "application/json",
    },
    json={"to": "+15551234567", "params": {"order_id": "A-1042"}},
)

data = response.json()

{
  "ok": true,
  "pricing": { "category": "marketing", "quoted_usd": 0.0025, "currency": "USD" }
}

{
  "ok": false,
  "code": "invalid_params",
  "errors": [{ "field": "order_id", "code": "template_param_missing" }]
}