curl -X POST https://api.thinnest.ai/v2/phone-numbers \
  -H "Authorization: Bearer $THINNESTAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "provider": "vobiz",
  "country": "IN",
  "number_type": "local",
  "agent_id": "ag_xyz789"
}'

{
  "id": "pn_abc123",
  "number": "+919876543210",
  "provider": "vobiz",
  "status": "active",
  "agent_id": "ag_xyz789",
  "monthly_cost_inr": 150.00,
  "setup_fee_inr": 500.00,
  "created_at": "2026-03-25T10:00:00Z"
}