SunYou package tracking, and the API behind it.
Shenzhen carrier behind many AliExpress economy parcels, with the local carrier's number once handed over. One free lookup a day, no sign-up.
Also known as SYPost, Sunyou Logistics.
SunYou tracking numbers
We recognize these formats from the number alone. For anything else from SunYou, add ?carrier=sunyou.
- SunYou
- SY + 2 letters + 9 digits
- Example (format only)
- SYGB012345678
- Category
- Cross-border
- API carrier code
- sunyou
SunYou tracking API quickstart
One request per number, or up to 100 at once with ?numbers=a,b,c. Your agents can use the same data over MCP.
REST
curl "https://api.lastscanned.com/v1/track/SYGB012345678?carrier=sunyou"Claude Code
claude mcp add --transport http lastscanned https://mcp.lastscanned.comThen ask
> Where is my SunYou package SYGB012345678? When will it arrive?
SunYou tracking FAQ
- How do I track a SunYou package?
- Paste the tracking number into the lookup on this page. We read SunYou's own tracking data and show every scan, the current status and the delivery details. Anyone can do one lookup a day without signing up.
- Is there a SunYou tracking API?
- Yes. GET https://api.lastscanned.com/v1/track/:number?carrier=sunyou returns SunYou tracking as JSON, in the same shape as every other carrier lastscanned covers. Sign up for a free key with 5 lookups a day, or Pro for $4.99 a month with 1,000 numbers.
- What does a SunYou tracking number look like?
- SunYou: SY + 2 letters + 9 digits. For example SYGB012345678. lastscanned recognizes these formats on its own, so ?carrier=sunyou is optional for them.
- Does this work for SYPost and Sunyou Logistics numbers?
- Yes. They are tracked through SunYou and come back as carrier "sunyou".
- Can an AI agent track SunYou packages?
- Yes. Add lastscanned as an MCP server (https://mcp.lastscanned.com) in Claude, ChatGPT, Cursor or VS Code and ask it where a SunYou parcel is.
Other carriers
Major carriers
Regional and last mile
Tracking pages are for people. This is for your code.
Every carrier shows a parcel differently. lastscanned reads them all and answers in one shape, so your app, your spreadsheet or your agent handles any carrier the same way.
| Carrier website | lastscanned API | |
|---|---|---|
| Carriers | One carrier per site | 31 carriers behind one endpoint |
| Response | A web page to read | The same JSON for every carrier |
| Volume | One number at a time | Up to 100 numbers per request |
| Agents | Copy and paste | MCP server for Claude, ChatGPT and Cursor |
| Automation | Check back by hand | Poll from your own code or workflow |
Free: 5 numbers a day with a key. Pro: $4.99 a month for 1,000 numbers, then $0.015 each.