Question Steambot Identify items by a unique number

[Cracker]

So i am building a steambot to interact with a website! Is there a specific variable in the item array that i could use to identify the item once the item is given to the bot? I heard that people use assetid but that it can change after making a trade.

manager.on('sentOfferChanged', function(offer, oldState) {
	if(TradeOfferManager.ETradeOfferState[offer.state] == "Declined") {
		console.log("Declined");
	} else if (TradeOfferManager.ETradeOfferState[offer.state] == "Active") {
		
	} else if (TradeOfferManager.ETradeOfferState[offer.state] == "Accepted") {

		offer.itemsToReceive.forEach(function(entry) {

			console.log(entry.id);
			
		});
	} else {
		console.log("Changed?");
		console.log(TradeOfferManager.ETradeOfferState[offer.state]);
	}
});

Also, where does the bot get the item data from? I dont see assetid for the items in http://api.steampowered.com/IEconItems_440/GetPlayerItems/v0001/

[Dr. McKay]

The asset ID for an item is also referred to as just the item's "id". In GetPlayerItems, "id" is the same as "assetid".

 

Asset IDs do change when traded for Valve games (and some others). You can get the new IDs from the getReceivedItems method.

[Cracker]

I tried that but it didnt work the id was different but ill try it again q.q

[Van Kappa]

You can use both intanceid and classid combined. They are unique and don't change after trade.

Edited December 21, 2016 by Van Kappa

[Dr. McKay]

They can change, e.g. StatTrak/Strange items that reset their counters on trade. There are also some other instances where they can change unexpectedly.