Depop sizes API

Endpoint facts

Method

GET

API path

/depop/sizes

Auth

apiKey

Credits

3 credits/request

Charged on

Successful 2xx responses only

Platform

Depop

Execution

Managed browser rendering where the target needs it

Response schema

#/definitions/depop.sizesResponseDoc

How this endpoint behaves

Requires the x-api-key header. No query or path parameters.

Notable response behavior:

• Depop's JSON API sits behind a stricter bot-protection tier than its product pages. Calls first try a fast direct request and then fall back to a rendered browser fetch, so responses can take 20-60 seconds; 503 means both paths were blocked. Retry later.
• departments only includes kidswear, menswear, and womenswear — everything-else (see /depop/categories) has no clothing sizes and is omitted.
• Each department groups its sizes into categories (e.g. "Tops", "Bottoms", "Shoes"), each of which groups sizes further into regions (EUR, UK, US, AU).
• Each size's id (e.g. "4.17") is the exact value to pass — comma -separated for multiple — as /depop/search's or /depop/shop/{username}'s sizes query parameter. It omits the region suffix Depop's own page URLs display (e.g. 4.17-US) — that suffix is decorative only; the bare id is what both endpoints actually key off.
• A size id is not scoped to a specific category/gender/is_kids combination by /depop/search or /depop/shop/{username} — pairing an id from the wrong category (e.g. a Shoes id while filtering Tops) simply returns zero results rather than an error.

Example response (truncated):

{
  "code": 200,
  "msg": "OK",
  "data": {
    "departments": [
      {
        "id": "womenswear",
        "name": "Women",
        "categories": [
          {
            "id": "wmns-tops-sizes",
            "name": "Tops",
            "regions": [
              {
                "region": "US",
                "sizes": [
                  { "id": "4.17", "name": "M" },
                  { "id": "4.18", "name": "L" }
                ]
              }
            ]
          }
        ]
      }
    ]
  }
}

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