Info API Migration Guide

Migrating from Hyperliquid’s public /info API to Uniblock is a two-line change: point at Uniblock’s endpoint and add your API key. Because Uniblock forwards the native /info contract verbatim, every request body and response shape you already use stays the same.

Grab your API key from the Uniblock dashboard before you start.

What changes

	Public Hyperliquid	Uniblock
URL	`https://api.hyperliquid.xyz/info`	`https://api.uniblock.dev/uni/v1/hyperliquid/info?chainId=999`
Auth	none	`x-api-key: YOUR_API_KEY` header
Testnet	`https://api.hyperliquid-testnet.xyz/info`	add `chainId=998`
Request body	unchanged	unchanged
Response body	unchanged	unchanged
Rate limits	request-weight cap per IP	no per-IP cap, but plan-level limits apply

Everything else (the type discriminator, operation-specific fields, and the JSON you get back) is identical.

Before and after

curl --location 'https://api.hyperliquid.xyz/info' \
  --header 'Content-Type: application/json' \
  --data '{
    "type": "clearinghouseState",
    "user": "0x0000000000000000000000000000000000000000"
  }'

curl --location \
  'https://api.uniblock.dev/uni/v1/hyperliquid/info?chainId=999' \
  --header 'x-api-key: YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "type": "clearinghouseState",
    "user": "0x0000000000000000000000000000000000000000"
  }'

Migrate in code

If you build requests in application code, change the base URL and inject the header once:

// Before
const BASE_URL = "https://api.hyperliquid.xyz/info";
async function info(body) {
  const res = await fetch(BASE_URL, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify(body),
  });
  return res.json();
}

// After
const BASE_URL = "https://api.uniblock.dev/uni/v1/hyperliquid/info?chainId=999";
async function info(body) {
  const res = await fetch(BASE_URL, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "x-api-key": process.env.UNIBLOCK_API_KEY, // the only new line
    },
    body: JSON.stringify(body),
  });
  return res.json();
}

Python

import os
import requests

# Before: "https://api.hyperliquid.xyz/info"
BASE_URL = "https://api.uniblock.dev/uni/v1/hyperliquid/info"

def info(body):
    res = requests.post(
        BASE_URL,
        params={"chainId": 999},
        headers={"x-api-key": os.environ["UNIBLOCK_API_KEY"]},
        json=body,
    )
    return res.json()

After migrating

The public per-IP request-weight cap no longer applies, but keep your retry/backoff logic: Uniblock enforces plan-level rate limits and returns 429 when your project exceeds them (backup routing does not bypass this). See Rate Limits & Caching and error codes.
Consider Uniblock’s synthetic types (portfolioState, batchClearinghouseStates, batchPortfolioStates) to replace multiple round-trips with one request. See the Info API overview.
Using an off-the-shelf Hyperliquid SDK? See SDK Compatibility.

Quickstart

Guides

Hyperliquid API

Info API Migration Guide

What changes

Before and after

Migrate in code

After migrating

​What changes

​Before and after

​Migrate in code

​After migrating

What changes

Before and after

Migrate in code

After migrating