All websocket events can be either a single item OR an array containing multiple items.

timesync

Syncing server timestamp. It is not emitted unless the client asks it by sending timesync event.

  ["timesync",1619682261540]

new_item

Emitted when a new item is available.

[
   "new_item",
   [
      {
         "auction_ends_at":1738080016,
         "auction_highest_bid":null,
         "auction_highest_bidder":null,
         "auction_number_of_bids":0,
         "icon_url":"-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpou-6kejhjxszFJTwW09-vloWZh-L6OITck29Y_cg_0r_HrY2m2ATmqhBlYT-nd9TDdFNoZQvWrla2xL29gMDpuM6cnHQ2vj5iuyhtZhH0GA",
         "is_commodity":false,
         "market_name":"M4A4 | Cyber Security (Field-Tested)",
         "market_value":3656,
         "name_color":"D2D2D2",
         "price_is_unreliable":false,
         "suggested_price":3801,
         "published_at":"2025-01-28T15:57:17.272965Z",
         "id":288767047,
         "marketplace_privacy_protection_level": "strict",
         "above_recommended_price":-4.05,
         "purchase_price":3656,
         "item_search":{
            "category":"Weapon",
            "type":"Rifle",
            "sub_type":"M4A4",
            "rarity":"Classified"
         },
         "wear_name":"Field-Tested",
         "depositor_stats":{
            "delivery_rate_recent":null,
            "delivery_rate_long":null,
            "delivery_time_minutes_recent":null,
            "delivery_time_minutes_long":null,
            "delivery_rate_status":"poor",
            "steam_level_min_range":null,
            "steam_level_max_range":null,
            "user_has_trade_notifications_enabled":true,
            "user_online_status":1
         }
      },
      {
         "auction_ends_at":null,
         "auction_highest_bid":null,
         "auction_highest_bidder":null,
         "auction_number_of_bids":0,
         "blue_percentage":null,
         "fade_percentage":null,
         "icon_url":"-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpovbSsLQJf1ObcTjxP09u3mY2KqPP7I6vdk3lu-M1wmeyTyoD8j1yg5RZrY26iItOTewQ3N1DVqFG9yObrh8W8uZnBmnRm6XYi53vfyhCxgBFSLrs4Q3CxbRA",
         "is_commodity":false,
         "market_name":"★ Gut Knife | Gamma Doppler (Factory New) - Phase 2",
         "market_value":46709,
         "name_color":"8650AC",
         "preview_id":"0651e9bdeae9",
         "price_is_unreliable":false,
         "stickers":[
            
         ],
         "suggested_price":43271,
         "wear":0.008,
         "published_at":"2025-01-28T17:11:28.916993Z",
         "id":288775401,
         "marketplace_privacy_protection_level": "base",
         "above_recommended_price":8.42,
         "purchase_price":46709,
         "item_search":{
            "category":"Weapon",
            "type":"Knife",
            "sub_type":"Gut Knife",
            "rarity":"Covert"
         },
         "wear_name":"Factory New",
         "depositor_stats":{
            "delivery_rate_recent":1,
            "delivery_rate_long":1,
            "delivery_time_minutes_recent":1,
            "delivery_time_minutes_long":1,
            "delivery_rate_status":null,
            "steam_level_min_range":0,
            "steam_level_max_range":4,
            "user_has_trade_notifications_enabled":false,
            "user_online_status":1
         }
      },
      {
         "auction_ends_at":1738084482,
         "auction_highest_bid":null,
         "auction_highest_bidder":null,
         "auction_number_of_bids":0,
         "blue_percentage":null,
         "fade_percentage":null,
         "icon_url":"-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpot621FAR17PLfYQJD_9W7m5a0mvLwOq7c2DMBupQn2eqVotqkiwHiqhdlMmigJtOWJwE5Zw3X8wS-yea8jcDo7c7XiSw0g89L9us",
         "is_commodity":false,
         "market_name":"AWP | Asiimov (Well-Worn)",
         "market_value":16300,
         "name_color":"D2D2D2",
         "preview_id":"11076784be00",
         "price_is_unreliable":false,
         "stickers":[
            {
               "wear":null,
               "name":"Fnatic | Rio 2022",
               "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXQ9QVcJY8gulRPRUOCF7b_mMndR15LKQVFsb_rflBigKaQdGxGvIm1zdHcla6lY-PQkzxXscYi0uuUoYqkjFDtqkJra3ezetGf5hhLtg"
            },
            {
               "wear":null,
               "name":"Fnatic | Rio 2022",
               "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXQ9QVcJY8gulRPRUOCF7b_mMndR15LKQVFsb_rflBigKaQdGxGvIm1zdHcla6lY-PQkzxXscYi0uuUoYqkjFDtqkJra3ezetGf5hhLtg"
            },
            {
               "wear":null,
               "name":"Fnatic (Glitter) | Paris 2023",
               "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXQ9QVcJY8gulRNTV7ZVLb9hZycVVNgJjtQurOxPwJy7P_JYzpHoti3wNbflqShZ7jVxj4C7Jwk2r7AoY_32lG2qEY6Zmild4KSJwc9ZA3Oug_pJVFYabg"
            },
            {
               "wear":null,
               "name":"Fnatic (Glitter) | Paris 2023",
               "image":"https://steamcommunity-a.akamaihd.net/economy/image/-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXQ9QVcJY8gulRNTV7ZVLb9hZycVVNgJjtQurOxPwJy7P_JYzpHoti3wNbflqShZ7jVxj4C7Jwk2r7AoY_32lG2qEY6Zmild4KSJwc9ZA3Oug_pJVFYabg"
            }
         ],
         "suggested_price":16643,
         "wear":0.398,
         "published_at":"2025-01-28T17:11:43.378843Z",
         "id":288775415,
         "marketplace_privacy_protection_level": "base",
         "above_recommended_price":-2.18,
         "purchase_price":16300,
         "item_search":{
            "category":"Weapon",
            "type":"Sniper Rifle",
            "sub_type":"AWP",
            "rarity":"Covert"
         },
         "wear_name":"Well-Worn",
         "depositor_stats":{
            "delivery_rate_recent":1,
            "delivery_rate_long":null,
            "delivery_time_minutes_recent":237,
            "delivery_time_minutes_long":null,
            "delivery_rate_status":null,
            "steam_level_min_range":21,
            "steam_level_max_range":40,
            "user_has_trade_notifications_enabled":false,
            "user_online_status":1
         }
      }
   ]
]

updated_item

Emitted when an existing item has been updated. For example, if status changes.

[
   "updated_item",
   [
      {
         "auction_ends_at":1738068984,
         "auction_highest_bid":72967,
         "auction_highest_bidder":4323412,
         "auction_number_of_bids":1,
         "blue_percentage":null,
         "fade_percentage":null,
         "icon_url":"-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpovbSsLQJf3qr3czxb49KzgL-MhMj5aoTTl3Ju6dBlhf3T-oL8i2u4ohQ0J3elLIfDdA5oZlCC-gO6wenugpC8vsuawXo1vCJw4SvazkO0hR4fauZvm7XAHkiVFsDF",
         "is_commodity":false,
         "market_name":"Souvenir MP9 | Hot Rod (Factory New)",
         "market_value":72967,
         "name_color":"8650AC",
         "preview_id":null,
         "price_is_unreliable":false,
         "stickers":[
            {
               "sticker_id":27,
               "wear":null,
               "name":"Luck Skill (Foil)",
               "image":"-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXQ9QVcJY8gulROWE3eQ-W_04DfRl5_GgJYv7aaJwZy1PaGIjgVvY-3l9eIxaP3Yu2IwD8Bu8B32ryT8dWj2wa3qEVua273JtORIxh-Pw_C74kPjA"
            }
         ],
         "suggested_price":77345,
         "wear":0.398,
         "published_at":"2025-01-28T12:53:52.913350Z",
         "id":13299,
         "marketplace_privacy_protection_level": "base",
         "above_recommended_price":-5,
         "purchase_price":73697,
         "wear_name":"Factory New",
         "depositor_stats":{
            "delivery_rate_recent":1,
            "delivery_rate_long":null,
            "delivery_time_minutes_recent":11,
            "delivery_time_minutes_long":null,
            "delivery_rate_status":null,
            "steam_level_min_range":100,
            "steam_level_max_range":5000,
            "user_has_trade_notifications_enabled":false,
            "user_online_status":1
         }
      }
   ]
]

auction_update

Emitted when someone places a bid for an auction item.

[
  {
    "id": 148844336,
    "above_recommended_price": 10,
    "auction_highest_bid": 79,
    "auction_highest_bidder": 3894061,
    "auction_number_of_bids": 11,
    "auction_ends_at": 1682284308
  },
  {
    "id": 148844305,
    "above_recommended_price": 18,
    "auction_highest_bid": 35,
    "auction_highest_bidder": 2678443,
    "auction_number_of_bids": 7,
    "auction_ends_at": 1682284301
  },
  {
    "id": 148844241,
    "above_recommended_price": 14,
    "auction_highest_bid": 203,
    "auction_highest_bidder": 7905183,
    "auction_number_of_bids": 17,
    "auction_ends_at": 1682284289
  }
]

deleted_item

Emitted when the item is not anymore available for withdrawing. Eg. the auction ends and the winner withdraws it. Contains an array of ids.

[
   "deleted_item",
   [
      91997374,
      92044606,
      92019018,
      92044607,
      91997376,
      92044608,
      91997377
   ]
]

trade_status

Emitted when the trade status gets updated.

[
   {
      "type":"withdrawal",
      "data":{
         "status":5,
         "status_message":"Sent",
         "metadata":{
            "item_validation":{
               "validItemDetected":true,
               "validatedAt":1710222032
            },
            "expires_at":1732272322,
            "partner":{
               "steam_id":"76561198382602085",
               "steam_name":"exampleProfile",
               "avatar":"https://avatars.steamstatic.com/60d676610e6303f1f5fde66f307dbe753fc91221.jpg",
               "avatar_full":"https://avatars.steamstatic.com/60d676610e6303f1f5fde66f307dbe753fc91221_full.jpg",
               "profile_url":"https://steamcommunity.com/profiles/76561198382602085",
               "timecreated":171313223,
               "steam_level":10
            }
         },
         "created_at":"2025-02-25 01:01:01",
         "updated_at":"2025-02-25 02:02:02",
         "id":291452362,
         "item_id":4209852853,
         "tradeoffer_id":22342312,
         "item":{
            "asset_id":4189826749,
            "blue_percentage":null,
            "fade_percentage":null,
            "icon_url":"-9a81dlWLwJ2UUGcVs_nsVtzdOEdtWwKGZZLQHTxDZ7I56KU0Zwwo4NUX4oFJZEHLbXH5ApeO4YmlhxYQknCRvCo04DEVlxkKgpot621FA957P3dcjFH7c6Jh4uem_vnDKnUkmld_cBOhuDG_Zi7iQ2w_RU5Z26md4TDewQ-aF7ZrAC6wL-81pK9tZXPy3pr7yl243eLmgv3309_PudPMg",
            "id":4209852853,
            "is_commodity":false,
            "market_name":"AWP | Acheron (Factory New)",
            "market_value":7,
            "name_color":"D2D2D2",
            "preview_id":"44f7eacc93ea",
            "price_is_unreliable":false,
            "stickers":[
               
            ],
            "suggested_price":281,
            "type":"Mil-Spec Grade Sniper Rifle",
            "wear":0.002,
            "marketplace_privacy_protection_level":"strict"
         },
         "total_value":700
      }
   }
]

deposit_failed

Emitted when a deposit fails.

[
  "deposit_failed",
  [
    {
      "response": {
        "data": {
          "success": false,
          "message": "\"Sticker | device (Gold) | Boston 2018\" (ID 3517043328) already exists in another deposit by you. Please select a different item.",
          "error_key": "item_already_deposited",
          "item_id": 30013
        },
        "status": 400,
        "statusText": "Bad Request"
      }
    }
]