Carriers

Korea Post (EMS, International Mail) Tracking API & MCP

Query live Korea Post (koreapost) package status and scan history in a single synchronous GET request or MCP tool call. lastscanned auto-detects S10 numbers ending KR (with a valid check digit) in Pass 1 and returns a normalized TrackingResult JSON payload, with no Korea Post account or API key.

Overview & Quick Facts

PropertyValue
Carrier slug (?carrier=)koreapost
Brand & service aliasesKorea Post (우정사업본부), ePOST, Korea EMS, service.epost.go.kr, S10 …KR
CategoryNational postal operator (South Korea), international mail
Single-package REST endpointGET https://api.lastscanned.com/v1/track/{trackingNumber}
Batch REST endpointGET https://api.lastscanned.com/v1/track?numbers=EE123456785KR,...
MCP server (https://mcp.lastscanned.com)track_package, track_packages, list_carriers (claude mcp add --transport http lastscanned https://mcp.lastscanned.com)
Authentication & pricingAuthorization: Bearer lsk_live_... · 1 free keyless lookup/day per IP · Free tier (5 unique numbers/day, $0) · Pro ($4.99/mo for 1,000 unique numbers, unlimited re-polls, $0.015/extra) · HTTP 402 Stripe MPP ($0.50 for 25-number lsk_pack_ key or $0.02/number in USDC on Tempo)

Why developers use lastscanned for Korea Post

  • Korean HTML to English-keyed JSON: ePOST returns Korean server-rendered HTML. lastscanned reads the scan table and maps Korean status words (배달완료, 배달준비, 미배달, 반송) to the standard statuses.
  • Local-time caveat handled: after the parcel leaves Korea, ePOST prints the destination's local time. Only scans at a Korean post office get a UTC timestamp (Asia/Seoul).

Tracking Number Formats & Auto-Detection (matches)

PassRule / RegexCheck DigitExamples
Pass 1 (matches)/^[A-Z]{2}\d{9}KR$/ (UPU S10)S10 mod-11EE123456785KR
Pass 2 (mayMatch)Nonen/an/a

Only S10 numbers whose check digit is valid are claimed. Anything else needs ?carrier=koreapost.

Synchronous GET Request & Normalized JSON Response

curl

curl -s "https://api.lastscanned.com/v1/track/EE123456785KR" \
  -H "Authorization: Bearer $LASTSCANNED_API_KEY"

MCP track_package tool call

{
  "tool": "track_package",
  "arguments": {
    "tracking_number": "EE123456785KR"
  }
}

Normalized TrackingResult JSON response

{
  "carrier": "koreapost",
  "trackingNumber": "EE123456785KR",
  "status": "delivered",
  "statusDescription": "배달완료",
  "service": null,
  "deliveredAt": "2026-10-22T05:20:00Z",
  "deliveredAtLocal": "2026-10-22T14:20:00",
  "signedBy": null,
  "destination": null,
  "events": [
    {
      "timestamp": "2026-10-22T05:20:00Z",
      "localTime": "2026-10-22T14:20:00",
      "status": "delivered",
      "description": "배달완료",
      "location": "Seoul Post Office",
      "code": null
    },
    {
      "timestamp": "2026-10-22T00:05:00Z",
      "localTime": "2026-10-22T09:05:00",
      "status": "out_for_delivery",
      "description": "배달준비",
      "location": "Seoul Post Office",
      "code": null
    },
    {
      "timestamp": "2026-10-20T09:40:00Z",
      "localTime": "2026-10-20T18:40:00",
      "status": "in_transit",
      "description": "발송교환국 도착",
      "location": "Incheon International Mail Center",
      "code": null
    }
  ]
}

Notes

  • Unverified scan layout: the scan-row parser was written from the page markup without a live number to compare; the not-found path was verified.
  • Domestic numbers: Korea Post's 13-digit domestic numbers are not auto-detected; only S10 numbers ending KR are.
  • An unknown number returns 404 not_found (cached for 5 minutes).

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