GS Postbox Tracking API & MCP
Query live GS Postbox (gspostbox) package status and scan history in a single synchronous GET request or MCP tool call. Invoice numbers are 10–12 digits, shared with other Korean carriers, so pass ?carrier=gspostbox.
Overview & Quick Facts
| Property | Value |
|---|---|
Carrier slug (?carrier=) | gspostbox |
| Brand aliases | GS Postbox, GS25 Postbox, CVSnet, 편의점택배, GS반값택배 |
| Category | Convenience-store parcel service (South Korea) |
| Single-package REST endpoint | GET https://api.lastscanned.com/v1/track/{trackingNumber} |
| Batch REST endpoint | GET https://api.lastscanned.com/v1/track?numbers=210600000123,... |
MCP server (https://mcp.lastscanned.com) | track_package, track_packages, list_carriers |
| Authentication & pricing | Authorization: Bearer lsk_live_... · 1 free keyless lookup/day per IP |
Tracking Number Formats & Auto-Detection
| Pass | Rule / Regex | Check Digit | Examples |
|---|---|---|---|
Pass 1 (matches) | none | none | none |
Pass 2 (mayMatch) | none | none | none |
This carrier is not auto-detected. Invoice numbers are 10–12 digits (GS25 half-price parcels start 21), a shape FedEx and Korean carriers share, so ?carrier=gspostbox is required.
Synchronous GET Request & Normalized JSON Response
curl -s "https://api.lastscanned.com/v1/track/210600000123?carrier=gspostbox" \
-H "Authorization: Bearer $LASTSCANNED_API_KEY"{
"carrier": "gspostbox",
"trackingNumber": "210600000123",
"status": "delivered",
"statusDescription": "고객에게 전달",
"service": "반값택배",
"deliveredAt": "2026-07-30T12:24:05Z",
"deliveredAtLocal": "2026-07-30T21:24:05",
"signedBy": null,
"destination": null,
"events": [
{
"timestamp": "2026-07-30T12:24:05Z",
"localTime": "2026-07-30T21:24:05",
"status": "delivered",
"description": "고객에게 전달",
"location": "GS25뉴동인3가점",
"code": "C11"
},
{
"timestamp": "2026-07-30T05:45:11Z",
"localTime": "2026-07-30T14:45:11",
"status": "exception",
"description": "점포에 도착",
"location": "GS25뉴동인3가점",
"code": "C10"
},
{
"timestamp": "2026-07-27T00:13:09Z",
"localTime": "2026-07-27T09:13:09",
"status": "in_transit",
"description": "점포에서 접수",
"location": "GS25용인서천마을점",
"code": "C01"
}
]
}Notes
- Source: cvsnet.co.kr's invoice page embeds the scans as JSON in a
trackingInfoscript variable. - Status:
C11(handed to the customer) is delivered;C10(arrived at the destination store, waiting for the customer) is shown asexception, the API's "ready for pick-up" convention. - Time zone: scan times have no offset and are read as
Asia/Seoul.
Related Resources
- Regex & check digits: Tracking number formats & auto-detection
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