How it works
Buy Mann Co. Supply Crate Keys with USDT, or sell tradable Mann Co. Supply Crate Keys for USDT site balance.
Connect Steam
We never see your password
Official Steam OpenID login. No app install.
You sign in on Steam's own page. Steam sends us only a one-time secure token β your password never touches our servers.
Lock the price
Price frozen for 30 seconds
Pick items β live quote β paste your Trade URL.
Choose your items and the price locks for 30 seconds. The market can move during that window β you still get exactly the displayed amount.
Get your USDT
Credit after confirmed bot receipt
Confirm in Steam Mobile β site balance credited after bot receipt.
Confirm the trade in the Steam Mobile app. After the bot receives and confirms the keys, USDT is credited to your site balance. Polygon withdrawal is a separate step.
Top up Steam Wallet β keep more
Pay USDT to receive Mann Co. Supply Crate Keys at the live quote. If you later list them on Steam Market, Valve fees and restrictions apply, so the top-up benefit varies with the market.
Sell Mann Co. keys for USDT site balance
Send supported Mann Co. Supply Crate Keys to our bot. USDT is credited to your site balance after confirmed receipt; Polygon withdrawal is a separate request.
30-second quote lock
The price stays locked for 30 seconds. Confirm in Steam Mobile; after the bot confirms receipt, USDT is credited to your site balance. Polygon withdrawal is separate.
Why this beats listing on Steam Market yourself
| Steam Market direct | SteamVaults | |
|---|---|---|
| Time to cash | 7 days to weeks | After confirmed bot receipt |
| Paid in | Steam Wallet (games only) | USDT site balance; Polygon withdrawal separate |
| Pricing | 13β15% Valve cut | Quote centered at about 70% of Steam reference; bid/ask spread from 2% |
| Unsold risk | Listing can sit forever | 30-second quote lock; market listing not required |
Fees
Quotes are centered around 70% of the Steam reference value, while the starting bid/ask spread is 2% and can adjust for market and inventory risk. The spread is not the total Steam-reference discount. The exact trade quote and current $0.80 Polygon USDT withdrawal fee are shown before confirmation.
Common questions
Do I have to give you my Steam password?+
No. You sign in on Steam's official page directly, and Steam sends us only a one-time secure token. Your password never touches our servers.
Do I lose money if the 30-second quote expires?+
No. When a quote expires, request a new one. The replacement reflects current market and inventory conditions, so it may be higher or lower. Only an unexpired 30-second quote locks the displayed amount.
How fast do I actually receive my USDT?+
After you accept the trade in Steam Mobile and the bot confirms receipt, USDT is credited to your site balance. If your Steam Mobile Authenticator has been active for under 7 days, Steam itself may hold the trade for 15 days; the Trade Readiness check flags this before you sell.
What does a Polygon withdrawal cost?+
Withdrawals currently use Polygon USDT. The withdrawal fee is currently $0.80 per request, is shown before confirmation, and is separate from the starting 2% trading spread.
My inventory is private β can I still use this?+
Inventory access depends on your current Steam privacy settings and Steam's account and item status. Steam must expose the inventory for the quote check; you also sign in through Steam OpenID and provide your Steam Trade URL for the trade. If Steam cannot expose it, the quote cannot proceed until the setting or restriction changes.
Ready to check your live quote?
Got a question? Read: What is a Steam trade hold? Β· Run the Steam trade readiness check