Thực hiện cuộc gọi đi (API)

curl -X POST https://api.thunderphone.com/v1/call \
  -H "Authorization: Bearer sk_live_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from_number": "+15551234567",
    "to_number":   "+14155550199",
    "agent_id":    12
  }'

{ "call_id": 987654321, "status": "initiated" }

curl -X POST https://api.thunderphone.com/v1/call \
  -H "Authorization: Bearer sk_live_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "from_number": "+15551234567",
    "to_number":   "+14155550199",
    "config": {
      "prompt":  "You are confirming Jane Doe appointment for 3pm tomorrow…",
      "voice":   "john",
      "product": "spark"
    }
  }'

{
  "from_number": "+15551234567",
  "to_number":   "+14155550199",
  "agent_id":    12,
  "max_hold_seconds": 120
}