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

URL: https://docs.lastscanned.com/carriers/koreapost

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

| Property | Value |
|---|---|
| **Carrier slug (`?carrier=`)** | `koreapost` |
| **Brand & service aliases** | Korea Post (우정사업본부), ePOST, Korea EMS, `service.epost.go.kr`, S10 `…KR` |
| **Category** | National postal operator (South Korea), international mail |
| **Single-package REST endpoint** | `GET https://api.lastscanned.com/v1/track/{trackingNumber}` |
| **Batch REST endpoint** | `GET 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 & pricing** | `Authorization: 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`)

| Pass | Rule / Regex | Check Digit | Examples |
|---|---|---|---|
| **Pass 1 (`matches`)** | `/^[A-Z]{2}\d{9}KR$/` (UPU S10) | S10 mod-11 | `EE123456785KR` |
| **Pass 2 (`mayMatch`)** | *None* | n/a | n/a |

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

## Synchronous `GET` Request & Normalized JSON Response

### `curl`

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

### MCP `track_package` tool call

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

### Normalized `TrackingResult` JSON response

```json
{
  "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).

## Related Resources

- **Live browser lookup tool**: [Track a Korea Post package live on lastscanned.com/lookup/koreapost](https://lastscanned.com/lookup/koreapost)
- **Carrier hub**: [All supported carriers](/carriers)
- **Regex & check digits**: [Tracking number formats & auto-detection](/formats)
- **AI support workflows**: [WISMO AI agents & synchronous tracking](/wismo)