> ## Documentation Index
> Fetch the complete documentation index at: https://docs.chainstack.com/llms.txt
> Use this file to discover all available pages before exploring further.
# USDC transfer | Hyperliquid exchange
> Transfers USDC directly to another address on the Hyperliquid chain. Available on Hyperliquid exchange via Chainstack JSON-RPC nodes.
You can only use this endpoint on the official Hyperliquid public API. It is not available through Chainstack, as the open-source node implementation does not support it yet. See [Hyperliquid methods](/docs/hyperliquid-methods) for the full availability breakdown.
This endpoint requires signature authentication. See our comprehensive [Authentication via Signatures guide](/docs/hyperliquid-authentication-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.
## Parameters
### 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:
```json theme={"system"}
{
"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
```shell cURL theme={"system"}
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": {...}
}'
```
```python Python (hyperliquid-python-sdk) theme={"system"}
from hyperliquid.exchange import Exchange
from hyperliquid.utils import constants
import eth_account
# Initialize with your private key
account = eth_account.Account.from_key("0x...")
exchange = Exchange(account, constants.MAINNET_API_URL)
# Send 100.5 USDC to another address
transfer_result = exchange.usd_transfer(
amount=100.5,
destination="0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb0",
)
print(transfer_result)
```
```typescript TypeScript (@nktkas/hyperliquid) theme={"system"}
import { ExchangeClient, HttpTransport } from "@nktkas/hyperliquid";
import { privateKeyToAccount } from "viem/accounts";
// Initialize with your private key
const wallet = privateKeyToAccount("0x...");
const transport = new HttpTransport();
const exchange = new ExchangeClient({ transport, wallet });
// Send 100.5 USDC to another address
const transferResult = await exchange.usdSend({
destination: "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb0",
amount: "100.5",
});
console.log(transferResult);
```
## Response example
```json theme={"system"}
{
"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.
## OpenAPI
````yaml openapi/hyperliquid_node_api/hypercore_exchange/exchange_usd_send.json post /exchange
openapi: 3.0.0
info:
title: Hyperliquid Exchange API
version: 1.0.0
description: >-
API for trading operations on Hyperliquid exchange requiring authentication.
⚠️ WARNING: These endpoints require EIP-712 signatures for authentication.
The example values provided will NOT work without proper cryptographic
signing. You must implement EIP-712 signing to use these endpoints
successfully.
servers:
- url: https://api.hyperliquid.xyz
security: []
paths:
/exchange:
post:
tags:
- hyperliquid exchange
summary: Transfer USDC
operationId: transferUSDC
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
action:
type: object
properties:
type:
type: string
default: usdSend
enum:
- usdSend
description: Action type
hyperliquidChain:
type: string
description: Chain identifier
default: Mainnet
enum:
- Mainnet
- Testnet
signatureChainId:
type: string
description: EIP-712 signature chain ID
default: '0xa4b1'
destination:
type: string
description: Recipient Ethereum address
amount:
type: string
description: Amount of USD to send as a decimal string
time:
type: integer
description: Current timestamp in milliseconds
required:
- type
- hyperliquidChain
- signatureChainId
- destination
- amount
- time
nonce:
type: integer
description: Current timestamp in milliseconds
signature:
type: object
description: EIP-712 signature of the action with r, s, v components
properties:
r:
type: string
description: ECDSA signature r component (hex string)
example: >-
0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef
s:
type: string
description: ECDSA signature s component (hex string)
example: >-
0xfedcba0987654321fedcba0987654321fedcba0987654321fedcba0987654321
v:
type: integer
description: ECDSA recovery id (27 or 28)
example: 27
required:
- r
- s
- v
vaultAddress:
type: string
description: >-
Address when trading on behalf of a vault or subaccount
(optional)
nullable: true
required:
- action
- nonce
- signature
example:
action:
type: usdSend
hyperliquidChain: Mainnet
signatureChainId: '0xa4b1'
destination: '0x1234567890abcdef1234567890abcdef12345678'
amount: '100.0'
time: 1705234567890
nonce: 1705234567890
signature:
r: >-
0x0000000000000000000000000000000000000000000000000000000000000000
s: >-
0x0000000000000000000000000000000000000000000000000000000000000000
v: 27
vaultAddress: null
responses:
'200':
description: USDC transfer result
content:
application/json:
schema:
type: object
properties:
status:
type: string
description: Request status
response:
type: object
properties:
type:
type: string
data:
type: object
properties:
status:
type: string
description: Transfer status
example:
status: ok
response:
type: usdSend
data:
status: success
````