curl --request PUT \
  --url https://api.tangoanalytics.com/v1/common/exchangerates \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --header 'x-client: <api-key>' \
  --data '
{
  "records": [
    {
      "source_currency": "USD",
      "converted_currency": "GBP",
      "spot_exchange_rate": "5.1111",
      "avg_exchange_rate": "4.111",
      "exchange_rate_date": "09/14/2020",
      "effective_from": "01/01/2020",
      "effective_to": "01/31/2020"
    }
  ]
}
'

const options = {
  method: 'PUT',
  headers: {
    'x-client': '<api-key>',
    'x-api-key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    records: [
      {
        source_currency: 'USD',
        converted_currency: 'GBP',
        spot_exchange_rate: '5.1111',
        avg_exchange_rate: '4.111',
        exchange_rate_date: '09/14/2020',
        effective_from: '01/01/2020',
        effective_to: '01/31/2020'
      }
    ]
  })
};

fetch('https://api.tangoanalytics.com/v1/common/exchangerates', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.tangoanalytics.com/v1/common/exchangerates"

payload = { "records": [
        {
            "source_currency": "USD",
            "converted_currency": "GBP",
            "spot_exchange_rate": "5.1111",
            "avg_exchange_rate": "4.111",
            "exchange_rate_date": "09/14/2020",
            "effective_from": "01/01/2020",
            "effective_to": "01/31/2020"
        }
    ] }
headers = {
    "x-client": "<api-key>",
    "x-api-key": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)

{
  "status": "OK",
  "gu_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "status_message": "<string>"
}