---
title: "POST /gmx-account/deposit/cross-chain/prepare"
method: POST
path: "/gmx-account/deposit/cross-chain/prepare"
tags: ["GMX Account"]
---

# POST /gmx-account/deposit/cross-chain/prepare

`POST /gmx-account/deposit/cross-chain/prepare`

## Request body

- CrossChainDepositPrepareRequest
  - `innerData` string — Optional extra payload appended to the LayerZero compose message (hex).
  - `nativeDropAmount` string — Optional native drop (gas) for the destination chain, in destination native decimals.
  - `nativeFee` string — Optional; when omitted, server quotes Stargate `nativeFee` on the source chain.
  - `composeGas` string — Optional client-supplied destination compose-gas hint; bypasses server quote.
  - `tokenKind` 'trade' | 'platform' — "trade" → `IStargate.sendToken` (default); "platform" → `IStargate.send`.
  - `isNativeOnSource` boolean — Whether the source-chain token is the chain's native gas asset (ETH/BNB/etc.) — Stargate auto-wraps it to WETH/WBNB on the source side. Optional override; otherwise resolved from the registry.
  - `destinationStargatePoolAddress` string — Optional override; otherwise resolved from the registry by symbol/token.
  - `sourceStargatePoolAddress` string — Optional override; otherwise resolved from the registry by symbol/token.
  - `tokenAddress` string — Token address on the settlement chain (alternative to `tokenSymbol`).
  - `tokenSymbol` string — Token identifier. Provide one of: - `tokenSymbol` (e.g. "USDC" | "USDT" | "ETH"), or - `tokenAddress` on the settlement chain. Stargate pool addresses and source-side `isNativeOnSource` are resolved server-side.
  - `amount` string, required — Amount in token-native decimals as a base-10 string.
  - `account` string, required — GMX account that will receive the deposit on the settlement chain.
  - `srcChainId` number, double, required — Source chain id (where the user holds funds and signs the bridge tx).

## Response `200`

Success

- CrossChainDepositPrepareResponse
  - `expiresAt` number, double, required
  - `nativeFee` string, required
  - `composeGas` string, required
  - `payload` object, required
    - `value` string, required
    - `data` string, required
    - `to` string, required
  - `payloadType` 'transaction', required

## Other responses

- `400` — Bad Request
- `429` — Too Many Requests
- `500` — Internal Server Error

---

[API](https://skmtc.net/gmx/apis/gmx-io-gmx-public-api.md) · [All operations](https://skmtc.net/gmx/apis/gmx-io-gmx-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/gmx/gmx-io-gmx-public-api/revisions/b3be06047493/schema)