Receive SMS at scale.
$3 per line.

# provision a line in Brooklyn
curl -X POST https://tintline.app/v1/rentals \
  -H "Authorization: Bearer dt_live_…" \
  -d '{"zip":"11213","days":30,"auto_renew":true}'

→ { "number": "3475550184", "status": "active",
    "expires_at": "2026-11-24T…" }

# every inbound SMS, signed, within ~1s
POST https://you.example.com/webhook
{ "event": "message.received", "message": { "number": "3475550184",
    "from": "22000", "code": "482913", "text": "…" } }