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POST
/
exchange
Transfer USDC
curl --request POST \
  --url https://api.hyperliquid.xyz/exchange \
  --header 'Content-Type: application/json' \
  --data '{
  "action": {
    "type": "usdSend",
    "hyperliquidChain": "Mainnet",
    "signatureChainId": "0xa4b1",
    "destination": "0x1234567890123456789012345678901234567890",
    "amount": "100.000000",
    "time": 1705234567890
  },
  "nonce": 1705234567890,
  "signature": {
    "r": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef",
    "s": "0xfedcba0987654321fedcba0987654321fedcba0987654321fedcba0987654321",
    "v": 27
  },
  "vaultAddress": null
}'
{
  "status": "ok",
  "response": {
    "type": "usdSend",
    "data": {
      "status": "success"
    }
  }
}
This endpoint requires signature authentication. See our comprehensive Authentication via Signatures guide for implementation details.
Transfers USDC directly to another address on the Hyperliquid chain. This is an internal transfer that doesn’t interact with the EVM bridge and uses a human-readable signature format for wallet interfaces.
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Parameters

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Required parameters

  • action (object, required) — The USD send action object containing:
    • type (string) — Must be "usdSend"
    • hyperliquidChain (string) — "Mainnet" for mainnet, "Testnet" for testnet
    • signatureChainId (string) — Chain ID used for signing in hex format (e.g., "0xa4b1" for Arbitrum)
    • destination (string) — Recipient address in 42-character hexadecimal format
    • amount (string) — Amount of USDC to send (e.g., "100.5" for 100.5 USDC)
    • time (number) — Current timestamp in milliseconds (must match nonce)
  • nonce (number, required) — Current timestamp in milliseconds (must match action.time)
  • signature (object, required) — EIP-712 signature of the action

​
Signature format

This endpoint uses EIP-712 typed data signing with a human-readable format: 
{
  "types": {
    "HyperliquidTransaction:UsdSend": [
      {"name": "hyperliquidChain", "type": "string"},
      {"name": "destination", "type": "string"},
      {"name": "amount", "type": "string"},
      {"name": "time", "type": "uint64"}
    ]
  },
  "primaryType": "HyperliquidTransaction:UsdSend",
  "domain": {
    "name": "HyperliquidSignTransaction",
    "version": "1",
    "chainId": 42161,
    "verifyingContract": "0x0000000000000000000000000000000000000000"
  },
  "message": {
    "hyperliquidChain": "Mainnet",
    "destination": "0x...",
    "amount": "100.5",
    "time": 1234567890123
  }
}

​
Returns

Returns an object with transfer status:
  • status — "ok" if successful
  • response — Contains transfer details:
    • type — "default"

​
Example request

curl -X POST https://api.hyperliquid.xyz/exchange \
  -H "Content-Type: application/json" \
  -d '{
    "action": {
      "type": "usdSend",
      "hyperliquidChain": "Mainnet",
      "signatureChainId": "0xa4b1",
      "destination": "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb0",
      "amount": "100.5",
      "time": 1234567890123
    },
    "nonce": 1234567890123,
    "signature": {...}
  }'

​
Response example

{
  "status": "ok",
  "response": {
    "type": "default"
  }
}

​
Important notes

  • Internal transfers only — This doesn’t interact with external bridges
  • Instant settlement — Transfers are immediate within Hyperliquid
  • No gas fees — Internal transfers don’t require gas
  • Decimal precision — Amount is a string to preserve decimal precision

​
Use cases

  • P2P transfers — Send USDC directly to other users
  • Account funding — Transfer between your own accounts
  • Payment processing — Programmatic USDC payments
  • Vault operations — Transfer funds to/from vault addresses
The time parameter in the action must exactly match the nonce parameter. This ensures signature uniqueness and prevents replay attacks.
Always verify the destination address. Transfers are irreversible once confirmed on the Hyperliquid chain.

Body

application/json
​
action
object
required
​
nonce
integer
required

Current timestamp in milliseconds

​
signature
object
required

EIP-712 signature of the action with r, s, v components

​
vaultAddress
string

Address when trading on behalf of a vault or subaccount (optional)

Response

200 - application/json

USDC transfer result

​
status
string

Request status

​
response
object
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