Developer API

Steam Trading API

Trade eligibility, lock state, Steam Guard status — everything a trade bot needs before opening a trade window.

Endpoints

All endpoints return JSON, accept the same auth header, and degrade with a normalised error envelope.

GET /steam/api/profile/trade-eligibility

Steam Trading API — quickstart

Same auth header as every other endpoint we ship. Get an API key from the dashboard and you're querying inside two minutes.

→ Single auth header, JSON response.
→ Rate limits scale with your plan tier.
→ Full schema in the API reference.

API Request

# curl with API key

curl "https://www.steamwebapi.com/steam/api/profile/trade-eligibility?key=$KEY"

# PHP

$res = file_get_contents('https://www.steamwebapi.com/steam/api/profile/trade-eligibility?key=' . $KEY);

$data = json_decode($res, true);

# Node.js

const r = await fetch(`https://www.steamwebapi.com/steam/api/profile/trade-eligibility?key=${KEY}`);

const data = await r.json();

About this API

Before you open a Steam trade, you want to know: can this user trade right now, are they locked, do they have Steam Guard, are they trade-banned? The Steam Trading API answers all of that in one request.

Drop it into your trade bot's preflight check, or into a marketplace risk engine that needs to reject ineligible counterparties up front. Same auth header as every other endpoint we ship.