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POST
/
exchange
C validator action
curl --request POST \
  --url https://api.hyperliquid.xyz/exchange \
  --header 'Content-Type: application/json' \
  --data '
{
  "action": {
    "type": "CValidatorAction",
    "register": {
      "profile": {
        "node_ip": {
          "Ip": "1.2.3.4"
        },
        "name": "My Validator",
        "description": "A Hyperliquid validator node",
        "delegations_disabled": false,
        "commission_bps": 1000,
        "signer": "0x1234567890abcdef1234567890abcdef12345678"
      },
      "unjailed": false,
      "initial_wei": 0
    }
  },
  "nonce": 1705234567890,
  "signature": {
    "r": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "s": "0x0000000000000000000000000000000000000000000000000000000000000000",
    "v": 27
  },
  "vaultAddress": null
}
'
import requests

url = "https://api.hyperliquid.xyz/exchange"

payload = {
    "action": {
        "type": "CValidatorAction",
        "register": {
            "profile": {
                "node_ip": { "Ip": "1.2.3.4" },
                "name": "My Validator",
                "description": "A Hyperliquid validator node",
                "delegations_disabled": False,
                "commission_bps": 1000,
                "signer": "0x1234567890abcdef1234567890abcdef12345678"
            },
            "unjailed": False,
            "initial_wei": 0
        }
    },
    "nonce": 1705234567890,
    "signature": {
        "r": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "s": "0x0000000000000000000000000000000000000000000000000000000000000000",
        "v": 27
    },
    "vaultAddress": None
}
headers = {"Content-Type": "application/json"}

response = requests.post(url, json=payload, headers=headers)

print(response.text)
const options = {
  method: 'POST',
  headers: {'Content-Type': 'application/json'},
  body: JSON.stringify({
    action: {
      type: 'CValidatorAction',
      register: {
        profile: {
          node_ip: {Ip: '1.2.3.4'},
          name: 'My Validator',
          description: 'A Hyperliquid validator node',
          delegations_disabled: false,
          commission_bps: 1000,
          signer: '0x1234567890abcdef1234567890abcdef12345678'
        },
        unjailed: false,
        initial_wei: 0
      }
    },
    nonce: 1705234567890,
    signature: {
      r: '0x0000000000000000000000000000000000000000000000000000000000000000',
      s: '0x0000000000000000000000000000000000000000000000000000000000000000',
      v: 27
    },
    vaultAddress: null
  })
};

fetch('https://api.hyperliquid.xyz/exchange', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));
<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.hyperliquid.xyz/exchange",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'action' => [
        'type' => 'CValidatorAction',
        'register' => [
                'profile' => [
                                'node_ip' => [
                                                                'Ip' => '1.2.3.4'
                                ],
                                'name' => 'My Validator',
                                'description' => 'A Hyperliquid validator node',
                                'delegations_disabled' => false,
                                'commission_bps' => 1000,
                                'signer' => '0x1234567890abcdef1234567890abcdef12345678'
                ],
                'unjailed' => false,
                'initial_wei' => 0
        ]
    ],
    'nonce' => 1705234567890,
    'signature' => [
        'r' => '0x0000000000000000000000000000000000000000000000000000000000000000',
        's' => '0x0000000000000000000000000000000000000000000000000000000000000000',
        'v' => 27
    ],
    'vaultAddress' => null
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}
package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.hyperliquid.xyz/exchange"

	payload := strings.NewReader("{\n  \"action\": {\n    \"type\": \"CValidatorAction\",\n    \"register\": {\n      \"profile\": {\n        \"node_ip\": {\n          \"Ip\": \"1.2.3.4\"\n        },\n        \"name\": \"My Validator\",\n        \"description\": \"A Hyperliquid validator node\",\n        \"delegations_disabled\": false,\n        \"commission_bps\": 1000,\n        \"signer\": \"0x1234567890abcdef1234567890abcdef12345678\"\n      },\n      \"unjailed\": false,\n      \"initial_wei\": 0\n    }\n  },\n  \"nonce\": 1705234567890,\n  \"signature\": {\n    \"r\": \"0x0000000000000000000000000000000000000000000000000000000000000000\",\n    \"s\": \"0x0000000000000000000000000000000000000000000000000000000000000000\",\n    \"v\": 27\n  },\n  \"vaultAddress\": null\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}
HttpResponse<String> response = Unirest.post("https://api.hyperliquid.xyz/exchange")
  .header("Content-Type", "application/json")
  .body("{\n  \"action\": {\n    \"type\": \"CValidatorAction\",\n    \"register\": {\n      \"profile\": {\n        \"node_ip\": {\n          \"Ip\": \"1.2.3.4\"\n        },\n        \"name\": \"My Validator\",\n        \"description\": \"A Hyperliquid validator node\",\n        \"delegations_disabled\": false,\n        \"commission_bps\": 1000,\n        \"signer\": \"0x1234567890abcdef1234567890abcdef12345678\"\n      },\n      \"unjailed\": false,\n      \"initial_wei\": 0\n    }\n  },\n  \"nonce\": 1705234567890,\n  \"signature\": {\n    \"r\": \"0x0000000000000000000000000000000000000000000000000000000000000000\",\n    \"s\": \"0x0000000000000000000000000000000000000000000000000000000000000000\",\n    \"v\": 27\n  },\n  \"vaultAddress\": null\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.hyperliquid.xyz/exchange")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Content-Type"] = 'application/json'
request.body = "{\n  \"action\": {\n    \"type\": \"CValidatorAction\",\n    \"register\": {\n      \"profile\": {\n        \"node_ip\": {\n          \"Ip\": \"1.2.3.4\"\n        },\n        \"name\": \"My Validator\",\n        \"description\": \"A Hyperliquid validator node\",\n        \"delegations_disabled\": false,\n        \"commission_bps\": 1000,\n        \"signer\": \"0x1234567890abcdef1234567890abcdef12345678\"\n      },\n      \"unjailed\": false,\n      \"initial_wei\": 0\n    }\n  },\n  \"nonce\": 1705234567890,\n  \"signature\": {\n    \"r\": \"0x0000000000000000000000000000000000000000000000000000000000000000\",\n    \"s\": \"0x0000000000000000000000000000000000000000000000000000000000000000\",\n    \"v\": 27\n  },\n  \"vaultAddress\": null\n}"

response = http.request(request)
puts response.read_body
{
  "status": "<string>",
  "response": {}
}
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 for the full availability breakdown.
This endpoint requires signature authentication. See our comprehensive Authentication via Signatures guide for implementation details.
Performs a validator-specific action on the Hyperliquid consensus layer.
Get your own node endpoint todayStart for free and get your app to production levels immediately. No credit card required.You can sign up with your GitHub, X, Google, or Microsoft account.

​
Parameters

​
Required parameters

  • action (object, required) — The action object containing:
    • type (string) — Must be "CValidatorAction"
    • payload (object) — Validator action payload
  • 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

curl -X POST https://api.hyperliquid.xyz/exchange \
  -H "Content-Type: application/json" \
  -d '{
    "action": {"type": "CValidatorAction"},
    "nonce": 1234567890123,
    "signature": {...}
  }'

import eth_account
from hyperliquid.exchange import Exchange
from hyperliquid.utils import constants

# Load the validator signer wallet (keep the key out of source control).
wallet = eth_account.Account.from_key("0x_your_private_key")

# CValidatorAction is public-only — use the public Hyperliquid mainnet API.
exchange = Exchange(wallet, constants.MAINNET_API_URL)

# Register a validator.
result = exchange.c_validator_register(
    node_ip="1.2.3.4",
    name="my-validator",
    description="My Hyperliquid validator",
    delegations_disabled=False,
    commission_bps=100,
    signer="0x_validator_signer_address",
    unjailed=True,
    initial_wei=10000000000,
)
print(result)

# Update the validator profile.
exchange.c_validator_change_profile(
    node_ip="1.2.3.4",
    name="my-validator",
    description="Updated description",
    unjailed=True,
    disable_delegations=False,
    commission_bps=100,
    signer=None,
)

# Unregister the validator.
exchange.c_validator_unregister()

import * as hl from "@nktkas/hyperliquid";
import { privateKeyToAccount } from "viem/accounts";

// Load the validator signer wallet (keep the key out of source control).
const wallet = privateKeyToAccount("0x_your_private_key");

// CValidatorAction is public-only — HttpTransport defaults to the public Hyperliquid API.
const transport = new hl.HttpTransport();
const client = new hl.ExchangeClient({ transport, wallet });

await client.cValidatorAction({
  changeProfile: {
    node_ip: { Ip: "1.2.3.4" },
    name: "my-validator",
    description: "Updated description",
    unjailed: true,
    disable_delegations: false,
    commission_bps: 100,
    signer: null,
  },
});

​
Use case

  • C validator action — Performs a validator-specific action on the Hyperliquid consensus layer.
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.

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 | null

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

Response

200 - application/json

Action result

​
status
string

Request status

​
response
object

Action response data

Last modified on June 24, 2026