Crypto Withdraw - AssetPay

Starts a cashout for the end user identified by steamId. Like every cashout, nothing is sent until your server answers the approval call with { "action": "approve" }. See Cashouts. Authentication: Merchant API Key (api-key header) Scope: CORE_ACCESS

Request

POST https://api.assetpay.gg/secure/crypto/withdraw
Content-Type: application/json
api-key: ap_...

{
  "steamId": "76561198012345678",
  "chain": "BSC",
  "token": "USDT",
  "address": "0x9c1f0e2d3b4a59687766554433221100ffeeddcc",
  "amountCents": 2500,
  "requestId": "cashout_7f3a91c2"
}

Field	Type	Required	Description
`steamId`	string	Yes	SteamID64 of the end user
`chain`	string	Yes	`ETH`, `BSC`, `SOL` or `TRON`
`token`	string	Yes	`USDT` or `USDC`. Only `USDT` on `TRON`
`address`	string	Yes	The user’s wallet address on that chain (26-64 chars)
`amountCents`	number	Yes	Amount debited from the merchant balance, in USD cents. The network fee comes out of it
`requestId`	string	Yes	Your idempotency key, 8-64 chars of `A-Z a-z 0-9 _ -`. Repeating it for the same user returns the first withdrawal

Response

201 Created

{
  "requestId": "...",
  "success": true,
  "data": {
    "id": "b0f3c1e2-...",
    "type": "crypto_withdraw",
    "status": "awaiting_approval",
    "steamId": "76561198012345678",
    "chain": "BSC",
    "token": "USDT",
    "amount": "25.00",
    "amountCents": 2500,
    "feeCents": 0,
    "receiveCents": 2500,
    "cryptoAmount": "25",
    "address": "0x9c1f0e2d3b4a59687766554433221100ffeeddcc",
    "txHash": null,
    "reason": null,
    "createdAt": "2026-09-20T10:00:00.000Z",
    "updatedAt": "2026-09-20T10:00:00.000Z",
    "completedAt": null
  }
}

Field	Type	Description
`status`	string	Starts as `awaiting_approval`. See Cashout statuses
`amountCents`	number	Debited from the merchant balance and held at once
`feeCents`	number	Flat network fee of the chain, taken out of `amountCents`
`receiveCents`	number	What the user receives: `amountCents - feeCents`
`cryptoAmount`	string	Token amount that is sent
`txHash`	string \| null	Set once the payout is `sent`
`reason`	string \| null	Your refusal reason, when your server refused it

Every later status change arrives as a { "withdrawal": ... } webhook. On rejected, failed and cancelled the full amount is back in the merchant balance.

Rate Limits

Shared across the crypto withdraw endpoints of all your users.

Merchant Status	Limit
Verified	120 requests / min
Unverified	5 requests / min

Errors

Code	Key	When
2524	`ONCHAIN_CLIENT_WITHDRAW_DISABLED`	Cashouts are switched off (HTTP 503)
2522	`ONCHAIN_MERCHANT_NOT_VERIFIED`	The merchant is not verified (HTTP 403)
2525	`ONCHAIN_CLIENT_WITHDRAW_LIMIT`	A daily limit is reached. `details.scope` is `user` or `merchant`, `details.remainingCents` is what is left (HTTP 403)
2526	`ONCHAIN_CLIENT_WITHDRAW_BUSY`	Another cashout of this merchant is being created, retry in a moment (HTTP 409)
2527	`ONCHAIN_CLIENT_WITHDRAW_NO_CALLBACK`	No active callback URL or no API secret, so the cashout cannot be approved (HTTP 409)
2508	`ONCHAIN_WITHDRAW_BELOW_MIN`	The user would receive less than $1.00 after the fee (HTTP 400)
2509	`ONCHAIN_WITHDRAW_INVALID_ADDRESS`	The address is not valid for this chain (HTTP 400)
2503	`ONCHAIN_UNSUPPORTED_TOKEN`	The token is not supported on this chain (HTTP 400)
2501	`ONCHAIN_CHAIN_PAUSED`	The chain is paused (HTTP 503)
2512	`ONCHAIN_INSUFFICIENT_HOT_BALANCE`	AssetPay cannot cover this payout right now, retry later (HTTP 503)
1600	`INSUFFICIENT_BALANCE`	The merchant balance does not cover the cashout (HTTP 400)
1908	`INSUFFICIENT_SCOPE`	The key does not have the `CORE_ACCESS` scope
1005	`RATE_LIMITED`	Rate limit exceeded