SizeKeeper for Retailers
Your customers already know the right sizes. Connect to that data and eliminate the guesswork behind every clothing gift.
Request API AccessReduce Returns
Wrong size is the #1 reason clothing gifts get returned. When the buyer already has the correct size on file, returns drop dramatically.
Convert Gift Shoppers
Grandparents and gift buyers are high-intent shoppers. Removing the size uncertainty turns browsers into buyers.
Right Product, Right Size
Surface the correct size automatically at checkout or on product pages — no size chart confusion, no guessing.
How It Works
Families track sizes
SizeKeeper users record clothing sizes for everyone they shop for — grandchildren, kids, spouses — across 8 clothing categories.
Shopper authenticates
On your site, the shopper connects their SizeKeeper account via OAuth. You receive a scoped access token — no raw passwords, no stored PII.
Your app queries the API
Call /api/v1/sizes to retrieve the
shopper's saved profiles and sizes. Pre-fill the right size in your
checkout or recommendation engine.
API Overview
- REST JSON API — standard HTTPS endpoints, straightforward to integrate
- 8 clothing categories — Shirt, Pants/Jeans, Shoes, Dress, Coat/Jacket, Hat, Gloves, Ring
- Size type aware — Adult, Youth, Child, Baby/Toddler sizes returned per profile
- Multiple profiles — a grandparent may have 6+ grandchildren; your app can select the right one
- Per-call pricing — pay only for what you use, no seat fees or monthly minimums
{
"profiles": [
{
"name": "Emma Smith",
"relationship": "Granddaughter",
"age": 8,
"sizes": {
"Shirt": { "type": "Youth", "value": "S (8-10)" },
"Pants": { "type": "Youth", "value": "8 Regular" },
"Shoes": { "type": "Youth", "value": "3.5Y" }
}
}
]
}
A fit for retailers who sell to gift buyers
Ready to talk integration?
The API is in development. Early partners get priority access and input on the feature roadmap. Reach out to start the conversation.
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