Introdução

curl -X GET "https://api.validanfe.com/NFe/ConsultarNFe/35170608530528000184550000000154301000771561" \
  -H "Accept: application/json" \
  -H "X-API-KEY: SEU_API_TOKEN_AQUI"

GET /NFe/ConsultarNFe/{chave}
Host: api.validanfe.com
X-API-KEY: SEU_API_TOKEN_AQUI
Accept: application/json

const response = await fetch('https://api.validanfe.com/NFe/ConsultarNFe/{chave}', {
  method: 'GET',
  headers: {
    'Accept': 'application/json',
    'X-API-KEY': 'SEU_API_TOKEN_AQUI'
  }
});

const data = await response.json();

import requests

url = "https://api.validanfe.com/NFe/ConsultarNFe/{chave}"
headers = {
    "Accept": "application/json",
    "X-API-KEY": "SEU_API_TOKEN_AQUI"
}

response = requests.get(url, headers=headers)
data = response.json()