curl --request POST \
  --url https://{your-subdomain}.neetoform.com/api/external/v2/forms/{form_id}/prefilled_link \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <x-api-key>' \
  --data '
{
  "answers": [
    {
      "question_id": "0b7e5c2a-1d3f-4a6b-8c9d-0e1f2a3b4c5d",
      "value": "oliver@example.com"
    }
  ],
  "discount_code": "SAVE10"
}
'

const options = {
  method: 'POST',
  headers: {'X-Api-Key': '<x-api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    answers: [
      {
        question_id: '0b7e5c2a-1d3f-4a6b-8c9d-0e1f2a3b4c5d',
        value: 'oliver@example.com'
      }
    ],
    discount_code: 'SAVE10'
  })
};

fetch('https://{your-subdomain}.neetoform.com/api/external/v2/forms/{form_id}/prefilled_link', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://{your-subdomain}.neetoform.com/api/external/v2/forms/{form_id}/prefilled_link"

payload = {
    "answers": [
        {
            "question_id": "0b7e5c2a-1d3f-4a6b-8c9d-0e1f2a3b4c5d",
            "value": "oliver@example.com"
        }
    ],
    "discount_code": "SAVE10"
}
headers = {
    "X-Api-Key": "<x-api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "url": "https://spinkart.neetoform.com/feedback?email=oliver%40example.com&discount_code=SAVE10",
  "query_params": {
    "email": "oliver@example.com",
    "discount_code": "SAVE10"
  }
}

{
  "error": "Form does not exist."
}

{
  "error": "Question 0b7e5c2a-1d3f-4a6b-8c9d-0e1f2a3b4c5d is not a published question of this form that can be pre-filled"
}