Initiate Deposit

Initiates a deposit (sell) trade. The user’s items are sent via Steam trade offer and the value is credited to your merchant balance. Authentication: Client Token (Authorization header)

Request

POST https://api.assetpay.gg/client/trading/deposit
Content-Type: application/json
Authorization: CLIENT_TOKEN

{
  "items": [
    {
      "itemId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "price": 10.75
    }
  ],
  "game": "730",
  "externalId": "dep_unique_123",
  "isInstant": true
}

Body Parameters

Parameter	Type	Required	Description
`items`	array	Yes	Items to deposit (min 1, max 250)
`items[].itemId`	string	Yes	Item ID from inventory (5–256 chars)
`items[].price`	number	Yes	Offer price in USD. Must equal the current offer price returned by `/client/inventory`, validated server-side.
`items[].amount`	number	No	Quantity to deposit from a stacked inventory row (integer, default: 1, max: 10000). Rust items and items routed to a deposit provider only accept `1`; a larger amount fails with `EXCEEDS_MAX_AMOUNT`.
`game`	string	No	`"730"` (CS2) or `"252490"` (Rust). Defaults to `"730"`.
`externalId`	string	No	Your unique tracking ID (max 128 chars). Must be unique per trade.
`isInstant`	boolean	No	CS2 only. Request instant credit during the hold period (default `false`). Fails with `INSTANT_DEPOSITS_DISABLED` if instant deposits are off for your account. Rust deposits are never split: they are credited in full when the trade reaches `completed`, whatever this field says.

Response

{
  "requestId": "...",
  "success": true,
  "data": {
    "id": "trade-uuid",
    "type": "deposit",
    "source": "client",
    "status": "initiated",
    "game": "730",
    "externalId": "dep_unique_123",
    "merchantId": "merchant-uuid",
    "clientUserId": "client-uuid",
    "clientSteamID": "76561198012345678",
    "clientTradeUrl": "https://steamcommunity.com/tradeoffer/new/?partner=...",
    "items": [
      {
        "id": "a1b2c3d4-...",
        "name": "AK-47 | Redline",
        "marketHashName": "AK-47 | Redline (Field-Tested)",
        "type": "Rifle",
        "iconUrl": "IzMF03bk9WpSBq-S-ekoE33L-iLqGFHVaU25ZzQNQcXdA3g5gMEPvUZZEfSMJ6dESN8p_2SVTY7V2N4MxGVIwXpaL3_a3Hh...",
        "assetId": "38291746502",
        "appid": 730,
        "tradable": true,
        "marketPrice": 12.50,
        "offer": {
          "price": 10.75,
          "accepted": true
        },
        "exterior": "Field-Tested",
        "wear": "0.25432"
      }
    ],
    "totalPrice": 10.75,
    "preCredit": 8.60,
    "pendingCredit": 2.15,
    "isInstant": true,
    "collateral": { "merchant": 0, "provider": 150.00 },
    "createdAt": "2026-03-04T10:00:00.000Z",
    "updatedAt": "2026-03-04T10:00:00.000Z"
  }
}

The response is a full Trade object. After creation, the trade progresses through callbacks. See Trade Lifecycle. preCredit, pendingCredit and collateral are already present on the creation response. For CS2, preCredit is what will be credited when the trade enters hold and pendingCredit the remainder. A Rust deposit has no hold: it carries preCredit equal to totalPrice and pendingCredit 0, and the full amount is credited on completed. collateral appears only on this response and never on callbacks.

Split baskets

A basket can be split into several trades internally, for example when some items are routed to a deposit provider and the rest go through AssetPay’s own bots. Each trade gets its own Steam offer and its own callbacks. The response body is the largest trade (the primary), and the others ride along in relatedTrades[], each a full Trade object. Only the primary carries your externalId. Instant credit is decided once for the whole basket and apportioned across the trades. If some of the trades fail to dispatch, the request still succeeds with the ones that went out; it only fails when none did.

Rate Limits

Per-merchant tier throttle (shared across all clients of the same merchant):

Merchant Status	Limit
Verified	500 requests / min
Unverified	5 requests / min

Per-client guard (scoped per (merchant, clientSteamId)):

Constraint	Limit	Error key
Concurrent active deposits	5	`TOO_MANY_ACTIVE_TRADES` (HTTP 429)
Deposits initiated in any rolling 5-minute window	10	`RATE_LIMITED` (HTTP 429)

An “active” deposit is any not-yet-accepted trade (initiated, pending or active). The per-client guard runs before pricing/inventory fetches, so rate-limited requests bail cheap.

Errors

Code	Key	When
1	`EXTERNAL_ID_EXISTS`	The `externalId` is already in use
3	`INVENTORY_FETCH_FAILED`	Couldn’t load user’s inventory
4	`NO_OFFER_FOUND`	No valid offer for this item
5	`TRADE_OFFER_FAILED`	The Steam trade offer could not be sent (HTTP 502)
6	`TOO_MANY_ACTIVE_TRADES`	Client has 5+ active deposits (see Rate Limits)
7	`USER_NOT_TRADEABLE`	User’s Steam account can’t trade. This covers a Steam economy (trade) ban for any game and, for CS2, a VAC ban on record (Steam refuses to move the items, even though the inventory still lists them as tradable); the error `details` carry `vacBanned`, `gameBans` and `economyBan`. Game bans do not block trading, and Rust deposits are not affected by VAC bans
9	`ITEMS_UNAVAILABLE`	Items not found in inventory, or no longer tradable
11	`PRICE_CHANGED`	Offer price has changed since fetch
13	`INVALID_TRADEURL`	Steam rejected the user’s trade URL while loading their inventory
16	`INVALID_LISTING_ID`	An `itemId` is not an inventory item id
17	`INSUFFICIENT_ITEM_AMOUNT`	Requested amount exceeds available quantity
18	`EXCEEDS_MAX_AMOUNT`	Requested amount exceeds the per-item maximum, or `amount` is above `1` on a Rust item or a provider-routed item
19	`DEPOSIT_IN_PROGRESS`	Another deposit is already processing for this user, or another deposit is claiming the same overstock-limited item. Retryable; the response carries `retry-after: 1`
29	`ESCROW_NOT_ALLOWED`	Rust: the trade would be held in Steam escrow (the user has no Steam Guard Mobile Authenticator)
30	`INVENTORY_PRIVATE`	The user’s Steam inventory is private or could not be accessed
31	`STEAM_UNAVAILABLE`	Steam is temporarily unable to serve the request; retry shortly (HTTP 424)
33	`STEAM_RATE_LIMITED`	Steam is rate-limiting inventory requests; retry shortly (HTTP 424)
45	`ITEM_OVERSTOCKED`	CS2: AssetPay already holds the maximum quantity of one or more items. `details.items[]` names each refused item as `{ itemId, marketHashName, remaining }`; refresh the inventory and retry without them
1001	`VALIDATION_FAILED`	Invalid request body (HTTP 400), including an empty `items` array or more than 250 items. `error.fields` maps each invalid field to its reason
1005	`RATE_LIMITED`	Client exceeded 10 deposits / 5 min (see Rate Limits)
1010	`NO_BOTS_AVAILABLE`	No Steam bots online; retry shortly
1011	`FLEET_DEGRADED`	No trading bot has capacity right now (HTTP 503, `Retry-After: 30`); retry shortly
1014	`DEPOSITS_PAUSED`	Deposits for this game are paused, or CS2 deposit pricing is temporarily unavailable (HTTP 503). Clears on its own
1310	`USER_NOT_FOUND`	Steam could not find the user behind the trade URL
1622	`INSTANT_DEPOSITS_DISABLED`	CS2: instant deposits are disabled for your account and the request set `isInstant: true` (omit the field or send `false`)

Overview

Authentication

Client

Trading

Secure

Verification

Wallet

Ledger

Request

Body Parameters

Response

Split baskets

Rate Limits

Errors

​Request

​Body Parameters

​Response

​Split baskets

​Rate Limits

​Errors

Request

Body Parameters

Response

Split baskets

Rate Limits

Errors