Change User Balance

The OMG platform calls this API to modify the player's balance.

This API is only invoked when there is a change in the balance. For example, it is called once when a bet is placed and funds are deducted, once when a payout is made, and once when verification is completed. Each invocation includes a type field that specifies the reason for the call.

ChangeBalance

This API is provided by the integrator and is called by the OMG platform.

POST {AGENT_URL}/api/luck/balance/change_balance?trace_id=your_trace_id

{AGENT_URL} is the callback address entered in the integrator's backend.

Headers

Name	Value
Content-Type	"application/json; charset=utf-8"
sign	"omg_sign_string"

Please refer to the Signature Algorithm and Example page for details on the signature algorithm.

Body

Name	Type	Description
app_id	string	The unique identifier for the user, available in the merchant backend.
uname	string	User ID provided by the integrator
money	string (decimal)	Balance Change (Positive/Negative)
game_id	integer	Game ID
session_id	string	Main game round id
round_id	string	Sub-game round id. If there is only one game, the value is the same as session_id
order_id	string	A unique identifier generated each time there is a change in the amount (maximum length of 64 characters)
timestamp	integer	timestamp (in seconds)
bet	string (decimal)	Bet Amount: This value is always positive and is only present when the player places a bet.
type	integer	1:Place Bet; 2:Cancel Bet; 3:Game Payout; 4:Verify Game Completion;5:LuckWin Treasure Chest Reward Distribution；7: WG brand game promotion payout； Game Position Fee Deduction Type Field Description*
end_round	bool	Is the current game session over
cancel_order_id	string	仅This field is only populated when type is 2, indicating which order was canceled.
award_order_ids	array	This field is only populated when type is 3, representing the total payout amount for all bets in the current round. See details below. award_order_ids Parameter Description*
player_login_token	string optional	User Token provided by the integrator

OMG Platform Request Parameter Example

{
    "app_id": "10013",
    "bet": "3",
    "game_id": 74,
    "money": "-3",
    "order_id": "20240716195311drxaoz1mxx6g",
    "session_id": "1813180074526625845",
    "round_id": "1813180074526625845",
    "timestamp": 1721130791,
    "uname": "1006417",
    "end_round": false,
    "type": 1,
    "cancel_order_id": "",
    "award_order_ids": null,
    "player_login_token":"c51597bb-969f-11ef-ad19-0242ac120002"
}

Integrator Response Parameter Example

Success

{
    "code": 1,
    "msg": "ok",
    "data": {
        "balance": "4289.15"
    }
}

Failed

Integrator Response Parameter Example Description

Name	Required	Type	Description
data	Yes	object	Response Data
balance	Yes	string (decimal)	User balance, supports up to 4 decimal places.
code	Yes	integer	Status Code
msg	Yes	string	Message

Error Code

For more error codes, please refer to the General Error Codes page description.

---

*award_order_ids Parameter Description

Type: Array of Objects

The fields of the object are as follows. For more details, please refer to the Game Payout example.

Name	Required	Type	Description
order_id	Yes	string	Bet Order ID
money	Yes	string(decimal)	Payout Amount

*type Parameter Description

Each type corresponds to a separate HTTP call.

Process Example:

• Game Bet → Game Payout → Game Round End

  • Corresponding type: 1 → 3 → 4

  • Description: The player places a bet in the game, wins, and the payout is processed, followed by validation of the game round ending. This flow applies to most game processes.

• Game Bet → Cancel Bet

  • Corresponding type: 1 → 2

  • Description: The player places a bet in the game, but cancels it before the round starts. This scenario is typical in multi-player (e.g., hundreds of players) games or mini-games. The session_id for the cancellation matches the session_id of the bet.

• Game Bet → No Win → Game Round End

  • Corresponding type: 1 → 4

  • Description: The player places a bet, but does not win in that round, which ends with validation of the game round’s completion.

• Game Bet → Game Payout → Game Payout → Game Payout … → Game Round End

  • Corresponding type: 1 → 3 → 3 → … → 4

  • Description: The player places a bet and wins multiple times within the same round until the game round ends. This scenario is common in cascading slot games, slots with special features, or lottery-type games.

• LUCKYWIN Treasure Chest Reward Distribution

  • Description: In LUCKYWIN, players can claim treasure chest rewards upon meeting turnover requirements at any time. *This action is independent of the game process.

• WG brand game promotion payout

  • Description: In WG brand games, players who complete designated in-game tasks are eligible to enter a lucky draw, where they may win cash prizes of various amounts based on probability. *This action is independent of the game process.

---

Example Parameters for OMG ChangeBalance API Request

API Request (Type = 1: User Bet)

{
    "app_id": "10013",
    "bet": "3",
    "game_id": 74,
    "money": "-3",
    "order_id": "20240716195311drxaoz1mxx6g",
    "session_id": "1813180074526625845",
    "round_id": "1813180074526625845",
    "timestamp": 1721130791,
    "uname": "1006417",
    "end_round": false,
    "type": 1,
    "cancel_order_id": "",
    "award_order_ids": null
}

API Request (Type = 2: Cancel Bet)

{
    "app_id": "13",
    "uname": "1033201",
    "money": "10000",
    "game_id": 100001,
    "session_id": "1777333924821798912",
    "round_id": "1777333924821798912",
    "order_id": "10920408215323di4cal9or8ji",
    "timestamp": 1712584403,
    "bet": "0",
    "type": 2,
    "end_round": false,
    "cancel_order_id":"20240408215323di4cal9or8jk",
    "award_order_ids":null
}

API Request (Type = 3: Game Payout)

{
    "app_id": "10013",
    "bet": "0",
    "game_id": 100001,
    "money": "33.66",
    "order_id": "20240715204114drtuiv8r7ny8",
    "session_id": "24713",
    "round_id": "24713",
    "timestamp": 1721047274,
    "uname": "1006415",
    "end_round": false,
    "type": 3,
    "cancel_order_id": "",
    "award_order_ids": [
        {
            "order_id": "20240715204030drtugi3tau4g",
            "money": "5.1"
        },
        {
            "order_id": "20240715204053drtuhqp0jthc",
            "money": "10.2"
        },
        {
            "order_id": "20240715204104drtuibx5hlhc",
            "money": "18.36"
        }
    ]
}

API Request (Type = 4: Game Round Ended)

{
    "app_id": "10013",
    "bet": "0",
    "game_id": 100001,
    "money": "0",
    "order_id": "20240715204114drtuiv8r7ny9",
    "session_id": "24713",
    "round_id": "24713",
    "timestamp": 1721047274,
    "uname": "1006415",
    "end_round": true,
    "type": 4,
    "cancel_order_id": "",
    "award_order_ids": null
}

API Request (Type = 5: LuckWin Treasure Chest Reward)

Exclusive to LuckWin Game

{
    "app_id": "10013",
    "bet": "0",
    "game_id": 100003,
    "money": "2",
    "order_id": "20240628171403dq4oali2j30g",
    "session_id": "14973",
    "round_id": "14973",
    "timestamp": 1719566043,
    "uname": "1004612",
    "end_round": false,
    "type": 5,
    "cancel_order_id": "",
    "award_order_ids": null
}

API Request (Type = 7: WG brand game promotion payout)

This promotion is exclusive to WG brand games.

{
    "app_id": "10013",
    "bet": "0",
    "game_id": 83013,
    "money": "300",
    "order_id": "20260128182915fbiuwamcm3nl",
    "session_id": "2016458543764471808",
    "round_id": "2016458543764471808",
    "timestamp": 1769596155,
    "uname": "1003802",
    "end_round": false,
    "type": 7,
    "cancel_order_id": "",
    "award_order_ids": null
}