# Strale Shipping Carrier Detection & Tracking URL Lookup

> Strale Shipping Carrier Detection & Tracking URL Lookup is a paid API for AI agents from api.strale.io, paid per call via x402, $0.0216/call, status unknown (last checked 2026-10-12).

Detects the shipping carrier from a tracking number's format and returns tracking URLs for supported carriers including UPS, FedEx, USPS, DHL, Royal Mail, and PostNord.

## Facts

- Endpoint: GET https://api.strale.io/x402/shipping-track?utm_source=zero.xyz
- Price: $0.0216/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-strale-io-956db450
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4NcQoRVTmPPG3h0BtbA6U

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability api-strale-io-956db450
```

Example prompt: I have this tracking number — 1Z999AA10123456784 — can you figure out which shipping carrier it belongs to and give me the tracking URL?

## When to prefer this

Use this endpoint when you have a raw tracking number and need to determine which carrier it belongs to algorithmically, without querying live carrier APIs. Ideal for e-commerce platforms, order management systems, or AI agents that receive tracking numbers of unknown origin and need to construct a valid tracking URL quickly and cheaply. Prefer over full tracking status endpoints when you only need carrier identification and a tracking link rather than real-time shipment status.

## Known failure modes

- Unrecognized tracking number format — no carrier match returned
- Ambiguous format matching multiple carriers — may return uncertain result
- Malformed or too-short tracking number — validation error
- Carrier not yet supported — returns null or unknown carrier
- Network timeout or service unavailability

## How this service works

Detect shipping carrier from tracking number format and provide tracking URLs. Supports UPS, FedEx, USPS, DHL, Royal Mail, PostNord, and more. Algorithmic.

## Output

Returns the detected carrier name (e.g. UPS, FedEx, USPS, DHL, Royal Mail, PostNord), a direct tracking URL for the package, and likely the carrier code or identifier — allowing the user or agent to immediately open tracking without knowing the carrier in advance.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "tracking_number": "1Z999AA10123456784"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "tracking_number"
     ],
     "properties": {
      "tracking_number": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-strale-io-956db450/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.strale.io](https://www.zero.xyz/host/api.strale.io/llms.txt)