How to track STO Express (Shentong) Spain parcels handed off to Correos (`PQ...`) & SEUR

# 1. Query STO Express origin waybill (extracts final-mile barcode in .message):
curl "https://api.lastscanned.com/v1/track/773049281940312" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

# 2. Query the extracted Correos (Spain) barcode:
curl "https://api.lastscanned.com/v1/track/PQ48290418293847561074F" \
  -H "Authorization: Bearer lsk_live_YOUR_API_KEY"

const headers = { Authorization: `Bearer ${process.env.LASTSCANNED_API_KEY}` };
const originRes = await fetch(`https://api.lastscanned.com/v1/track/${encodeURIComponent(number)}`, { headers });
const originPkg = await originRes.json();

// Extract secondary barcode from top-level message ("Forwarded to Correos (PQ48290418293847561074F)")
const handoff = originPkg.message?.match(/^Handed to (.+?) as ([A-Z0-9-]+)$/i);
if (handoff) {
  const [, , lastMileNumber] = handoff;
  const destRes = await fetch(`https://api.lastscanned.com/v1/track/${encodeURIComponent(lastMileNumber)}`, { headers });
  const destPkg = await destRes.json();
}

claude mcp add --transport http lastscanned https://mcp.lastscanned.com \
  --header "Authorization: Bearer lsk_live_YOUR_API_KEY"