> ## 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.
# cDeposit | Hyperliquid exchange
> Deposits tokens into the consensus layer for staking or validator operations. 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.
Deposits tokens into the consensus layer for staking or validator operations.
## Parameters
### Required parameters
* `action` (object, required) — The action object containing:
* `type` (string) — Must be `"cDeposit"`
* `amount` (string) — Amount to deposit
* `nonce` (number, required) — Current timestamp in milliseconds (must be recent)
* `signature` (object, required) — EIP-712 signature of the action
### Optional parameters
* `vaultAddress` (string, optional) — Address when trading on behalf of a vault or subaccount
## Returns
Returns an object with the action status:
* `status` — `"ok"` if request processed
* `response` — Contains action result data
## Example request
```shell cURL theme={"system"}
curl -X POST https://api.hyperliquid.xyz/exchange \
-H "Content-Type: application/json" \
-d '{
"action": {"type": "cDeposit"},
"nonce": 1234567890123,
"signature": {...}
}'
```
```python Python (hyperliquid-python-sdk) theme={"system"}
# The hyperliquid-python-sdk has no cDeposit convenience method,
# so build and sign the user-signed action with the SDK primitives.
import eth_account
from hyperliquid.exchange import Exchange
from hyperliquid.utils.constants import MAINNET_API_URL
from hyperliquid.utils.signing import get_timestamp_ms, sign_user_signed_action
# EIP-712 payload for the cDeposit action.
C_DEPOSIT_SIGN_TYPES = [
{"name": "hyperliquidChain", "type": "string"},
{"name": "wei", "type": "uint64"},
{"name": "nonce", "type": "uint64"},
]
wallet = eth_account.Account.from_key("0x...") # your private key
exchange = Exchange(wallet, MAINNET_API_URL) # public mainnet endpoint
nonce = get_timestamp_ms()
action = {
"type": "cDeposit",
"wei": 1 * 10**8, # amount of wei to deposit into staking (float \* 1e8)
"nonce": nonce,
}
signature = sign_user_signed_action(
wallet,
action,
C_DEPOSIT_SIGN_TYPES,
"HyperliquidTransaction:CDeposit",
True, # is_mainnet
)
result = exchange._post_action(action, signature, nonce)
print(result)
```
```typescript TypeScript (@nktkas/hyperliquid) theme={"system"}
import { ExchangeClient, HttpTransport } from "@nktkas/hyperliquid";
import { privateKeyToAccount } from "viem/accounts";
const wallet = privateKeyToAccount("0x..."); // your private key
const transport = new HttpTransport(); // public mainnet endpoint
const exchange = new ExchangeClient({ transport, wallet });
const result = await exchange.cDeposit({
wei: 1 * 1e8, // amount of wei to deposit into staking (float \* 1e8)
});
console.log(result);
```
## Use case
* **C deposit** — Deposits tokens into the consensus layer for staking or validator operations.
Always ensure your system clock is synchronized. Nonce must be within a reasonable time window of the current server time or the request will be rejected.
## OpenAPI
````yaml openapi/hyperliquid_node_api/hypercore_exchange/exchange_c_deposit.json post /exchange
openapi: 3.0.0
info:
title: Hyperliquid Exchange API
version: 1.0.0
description: >-
API for trading operations on Hyperliquid exchange. **IMPORTANT**: All
exchange endpoints require EIP-712 signatures for authentication. The
examples shown will not work without proper signing. See the [Hyperliquid
Python SDK](https://github.com/hyperliquid-dex/hyperliquid-python-sdk) for
implementation examples.
servers:
- url: https://api.hyperliquid.xyz
security: []
paths:
/exchange:
post:
tags:
- hyperliquid exchange
summary: C deposit
operationId: cDeposit
requestBody:
required: true
content:
application/json:
schema:
type: object
properties:
action:
type: object
properties:
type:
type: string
default: cDeposit
enum:
- cDeposit
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'
wei:
type: integer
description: Amount in wei to deposit for staking
nonce:
type: integer
description: Current timestamp in milliseconds
required:
- type
- hyperliquidChain
- signatureChainId
- wei
- nonce
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: cDeposit
hyperliquidChain: Mainnet
signatureChainId: '0xa4b1'
wei: 1000000000000000000
nonce: 1705234567890
nonce: 1705234567890
signature:
r: >-
0x0000000000000000000000000000000000000000000000000000000000000000
s: >-
0x0000000000000000000000000000000000000000000000000000000000000000
v: 27
vaultAddress: null
responses:
'200':
description: Action result
content:
application/json:
schema:
type: object
properties:
status:
type: string
description: Request status
response:
type: object
description: Action response data
````