Build on the API.
First message in five minutes.

import os, requests

r = requests.post(
    "https://api.smsmeteor.com/v1/messages",
    headers={"Authorization": f"Bearer {os.environ['SMSMETEOR_KEY']}",
             "Idempotency-Key": "order-4821"},
    json={"to": "+14155550142", "from": "METEOR",
          "text": "Your order #4821 has shipped."},
)
print(r.json()["id"], r.json()["price"])

const r = await fetch("https://api.smsmeteor.com/v1/messages", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.SMSMETEOR_KEY}`,
    "Idempotency-Key": "order-4821",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ to: "+14155550142", from: "METEOR",
    text: "Your order #4821 has shipped." }),
});
const { id, price } = await r.json();

$ch = curl_init('https://api.smsmeteor.com/v1/messages');
curl_setopt_array($ch, [
  CURLOPT_POST => true, CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => ['Authorization: Bearer ' . getenv('SMSMETEOR_KEY'),
    'Idempotency-Key: order-4821', 'Content-Type: application/json'],
  CURLOPT_POSTFIELDS => json_encode(['to' => '+14155550142',
    'from' => 'METEOR', 'text' => 'Your order #4821 has shipped.']),
]);
$msg = json_decode(curl_exec($ch), true);

curl https://api.smsmeteor.com/v1/messages \
  -H "Authorization: Bearer $SMSMETEOR_KEY" \
  -H "Idempotency-Key: order-4821" \
  -d to="+14155550142" \
  -d from="METEOR" \
  -d text="Your order #4821 has shipped."