CSTRADEUP Logo
Available on Chrome Web Store

Your CS2 history.
Finally yours.

Every item sitting in your inventory, even in your Storage Units, it's all real data locked inside Steam with no way to analyse it. CSTRADEUP extension syncs your history in the background, so you can finally see your portfolio, your P&L, and your edge.

Add to Chrome — It's Free How It Works
Free forever Open source Syncs automatically
CSTRADEUP CSTRADEUP v0.1.0

Inventory

22
1d ago
100% At Jan 17, 2014
Now Mar 2026
Account created May 2011
Crawled to January 17, 2014 ~2d ago
Sync now

What the extension unlocks

The moment your data starts flowing, two personal analytics surfaces light up in your CSTRADEUP account. No configuration. No waiting. Just insight from your real history.

Portfolio

Inventory + Storage Units,
one unified portfolio

Items in your inventory and items locked inside Storage Units — finally in one place. Every skin is valued at real-time market price against your cost basis, so you see your true holdings, not just what’s on the surface.

  • Inventory & Storage Unit items merged into a single view
  • Portfolio value over time with interactive chart
  • P&L, ROI, cost basis per item and in aggregate
  • Top gainers, worst performers, allocation breakdown
Open Portfolio
Portfolio +12.4%
Value
$1,842
Invested
$1,637
P&L
+$205
M4A4 | Royal Paladin (Field-Tested)
M4A4 | Royal Paladin (Field-Tested)
x2 · 17.7% · Covert
$168.42
+$102.87 +156.9%
M4A1-S | Player Two (Field-Tested)
M4A1-S | Player Two (Field-Tested)
x2 · 11.8% · Covert
$112.60
+$35.63 +46.3%
Operation Wildfire Case
Operation Wildfire Case
x20 · 9.4% · Base Grade
$89.60
+$29.60 +49.3%
Trade-Up History
Trades
84
Win%
61%
Total P&L
+$312
Streak
▲3
Activity
★ Karambit | Doppler Black Pearl (Minimal Wear)
★ Karambit | Doppler Black Pearl (Minimal Wear)
5 inputs
$146.99 $5,922.49 = +$5,775.50 (+3929%)
SCAR-20 | Carbon Fiber (Factory New)
SCAR-20 | Carbon Fiber (Factory New)
10 inputs
$0.30 $0.11 = -$0.19 (-63%)
PP-Bizon | Blue Streak (Field-Tested)
PP-Bizon | Blue Streak (Field-Tested)
10 inputs
$1.08 $0.50 = -$0.58 (-54%)
Trade-Up History

Every contract you ever
crafted, analysed

Stop wondering whether trade-ups are working for you. See every contract laid out — what you put in, what came out, and whether it was profit or loss.

  • Cumulative P&L line chart with per-trade annotations
  • GitHub-style activity heatmap by day and outcome
  • Win rate, avg profit, best day, current streak
  • Ticket Cashback: collect tickets for each trade-up
Open Trade-Up History

Up and running in three steps

Install from the Chrome Web Store, sign in, and let the extension do the rest.

Step 1

Install the extension

One click from the Chrome Web Store. Works on Chrome, Edge, Brave, Opera — any Chromium browser.

Add to Chrome
Step 2

Sign in with Steam

Log in to CSTRADEUP with your Steam account. This links the extension to your personal dashboard.

Sign in with Steam
Step 3

Sync your history

Hit sync to crawl your full Steam history. The initial run takes about 5–10 min depending on account age — pause and resume anytime.

After the first sync, updates take seconds.
Open Portfolio
Open source: The extension is fully open source under the MIT License. Browse the source on GitHub or build it yourself.

Still have questions?

Here are answers to common questions and concerns.

Does the extension store my Steam login credentials?
No. The extension never touches your username or password. It only reads responses after Steam has already authenticated you in your browser session — the same data visible in your browser tab.
Will it track me on non-Steam pages?
No. The extension only activates on steamcommunity.com/id/*/inventory* pages — it is completely inactive everywhere else.
Can I use CSTRADEUP without the extension?
Yes. All trade-up calculators, contract browser, simulator, float finder, and market insights work without the extension. The extension only unlocks your personal Portfolio and Trade-Up History features.
How far back does my trade-up history go?
The extension reads Steam's inventory event history page-by-page, following cursor pagination. Each sync picks up from where it left off. The further back Steam's API provides data, the further back we record — typically several months to years depending on your account activity.
Can I build the extension from source myself?
Absolutely. The extension is fully open source under the MIT License. Clone the GitHub repo, run pnpm install && pnpm run build:webpack and load it as an unpacked extension. It's the same code published on the Chrome Web Store.
Chrome Web Store

Your history is waiting.
Go get it.

Free. Open source. One click to install.

Add to Chrome — It's Free How It Works
Source on GitHub Sign in with Steam