How the CS2 Inspect URL Format Works

Every CS2 in-game item has a unique inspect URL that encodes three pieces of information in a single string: the owner (or market listing) ID, the asset ID, and the class ID. The format follows the pattern S<steamid>A<assetid>D<classid> for player-owned items, or M<marketid>A<assetid>D<classid> for market listings.

What each ID means

Prefix	Meaning	Use case
`S<id>`	Steam ID of the current owner	Player-owned items (inventory inspect)
`M<id>`	Steam Market listing ID	Items currently listed on the Steam Market
`A<id>`	Asset ID — unique per item	Identifies the specific item instance
`D<id>`	Class ID — defines the base skin & wear	Identifies the skin variant (knife model, finish, wear tier)

Why float, pattern, and wear matter

The float value of a CS2 skin is a numeric measurement (0.00-1.00) of how worn the texture appears. Lower floats = cleaner-looking skins. Five named wear tiers map to float ranges:

Wear tier	Float range	Visual
Factory New (FN)	0.00 - 0.07	Pristine, no visible wear
Minimal Wear (MW)	0.07 - 0.15	Very minor scratching
Field-Tested (FT)	0.15 - 0.38	Noticeable but not dominant wear
Well-Worn (WW)	0.38 - 0.45	Heavy wear visible across the surface
Battle-Scarred (BS)	0.45 - 1.00	Maximum wear weathering

Pattern index — why two identical skins look different

Each CS2 skin instance has a pattern index (0-1000) — a number that controls how the procedural texture is applied to the model. Some finishes (Case Hardened, Marble Fade, Doppler, Fade) have lottery-driven pattern indices that produce iconic rare variants: Blue Gems on AK-47 Case Hardened (#661 being the holy grail), Fire and Ice on Karambit Marble Fade, Emerald-phase Doppler.

How to get an inspect URL

From your inventory: right-click any item, choose Inspect in Game, then copy the URL from the inspect dialog.
From a Steam Market listing: open the listing page, click Inspect in Game link, and copy the URL.
From a trade offer: click the item in the trade window to reveal the inspect link.

Trader & collector use cases

Inspect URLs let traders verify that a quoted item exactly matches the seller's listing — the asset ID is unique and cannot be spoofed. Pattern-hunters cross-reference inspect URLs against rare-pattern databases (Blue Gem #661, Fire and Ice 100%) to confirm authenticity before purchase. Sticker craft collectors verify sticker placement and float pairing.

Frequently asked questions

Why doesn't this tool show the float value?

The actual float value requires a live connection to Valve's CS2 Game Coordinator using a Steam bot account. Tools like CSFloat and FloatDB do this server-side. Our checker decodes the URL components and links to the Steam Market listing where you can request a live inspect.

Can I see the pattern index?

Pattern index is encoded in the in-game item attributes, not the inspect URL itself. Once you open the inspect link in CS2, the in-game inspect screen shows the float value and pattern index. Third-party services that show this without launching the game query the Game Coordinator directly.

Are market listing IDs permanent?

No — market listing IDs only exist while the item is actively listed on the Steam Community Market. Once sold or removed, the M-prefix inspect link no longer resolves. Asset IDs, however, persist as the item moves between owners.

CS2 Float Checker