Installation & Setup

Requirements

Node.js 22 or higher
npm, yarn, pnpm, or bun

Install the SDK

pnpm
npm
yarn
bun

pnpm add @paxoslabs/amplify-sdk

npm install @paxoslabs/amplify-sdk

yarn add @paxoslabs/amplify-sdk

bun add @paxoslabs/amplify-sdk

Install Peer Dependencies

The SDK works with various wallet libraries. Install the dependencies for your chosen stack:

Privy
Wagmi
Viem Only

pnpm add @privy-io/react-auth viem @tanstack/react-query

pnpm add wagmi viem @tanstack/react-query

pnpm add viem

Environment Variables

Create .env.local (ignored by Vite by default):

# Required
VITE_AMPLIFY_API_KEY=pxl_your_api_key

# Optional: Wallet provider credentials
VITE_PRIVY_APP_ID=your-privy-app-id

# Recommended: Custom RPC endpoints
VITE_APP_ETHEREUM_MAINNET_RPC=https://eth-mainnet.g.alchemy.com/v2/your-key
VITE_APP_ETHEREUM_SEPOLIA_RPC=https://eth-sepolia.g.alchemy.com/v2/your-key

Never commit .env.local. Provide an .env.example without secrets for teammates.

Initialize the SDK

Call initAmplifySDK() once at application startup before using any other SDK functions.

Basic

import { initAmplifySDK } from "@paxoslabs/amplify-sdk";

await initAmplifySDK("pxl_your_api_key");

With Custom RPCs

For the best user experience and reliability, use your own RPC endpoints:

import { initAmplifySDK } from "@paxoslabs/amplify-sdk";
import { mainnet, sepolia } from "viem/chains";

await initAmplifySDK("pxl_your_api_key", {
  rpcUrls: {
    [mainnet.id]: import.meta.env.VITE_APP_ETHEREUM_MAINNET_RPC,
    [sepolia.id]: import.meta.env.VITE_APP_ETHEREUM_SEPOLIA_RPC,
  },
});

With All Options

import { initAmplifySDK, LogLevel } from "@paxoslabs/amplify-sdk";

await initAmplifySDK("pxl_your_api_key", {
  rpcUrls: {
    1: import.meta.env.VITE_APP_ETHEREUM_MAINNET_RPC,
  },
  telemetry: true,
  logLevel: LogLevel.ERROR,
});

React Integration Hook

Create a hook to initialize the SDK once and expose ready state:

// src/hooks/useAmplify.ts
import { initAmplifySDK, LogLevel } from "@paxoslabs/amplify-sdk";
import { useEffect, useState } from "react";
import { mainnet } from "viem/chains";

let initialized = false;

export function useAmplify() {
  const [isReady, setIsReady] = useState(initialized);
  const [error, setError] = useState<Error | null>(null);

  useEffect(() => {
    if (initialized) {
      setIsReady(true);
      return;
    }

    const apiKey = import.meta.env.VITE_AMPLIFY_API_KEY;
    if (!apiKey) {
      setError(new Error("Missing VITE_AMPLIFY_API_KEY env variable"));
      return;
    }

    async function init() {
      try {
        await initAmplifySDK(apiKey, {
          rpcUrls: {
            [mainnet.id]: import.meta.env.VITE_APP_ETHEREUM_MAINNET_RPC,
          },
          logLevel: LogLevel.ERROR,
          telemetry: true,
        });
        initialized = true;
        setIsReady(true);
      } catch (err) {
        setError(err instanceof Error ? err : new Error("SDK initialization failed"));
      }
    }

    init();
  }, []);

  return { isReady, error };
}

Verify Installation

Test that everything is working:

import { initAmplifySDK, getVaultsByConfig } from "@paxoslabs/amplify-sdk";

async function verify() {
  await initAmplifySDK("pxl_your_api_key");

  const vaults = await getVaultsByConfig();
  console.log(`Found ${vaults.length} vaults:`);
  for (const vault of vaults) {
    console.log(`  ${vault.name} — ${vault.yieldType} on chain ${vault.chainId}`);
  }
}

verify();

Package Exports

The SDK supports focused imports for tree-shaking:

// Main entry — all public APIs
import { initAmplifySDK, getVaultsByConfig } from "@paxoslabs/amplify-sdk";

// Low-level helpers (contract reads, price feeds)
import { getEthPrice, getRateInQuoteWithAssetDecimals } from "@paxoslabs/amplify-sdk/core";

// Vault operations
import { prepareDeposit, prepareDepositAuthorization } from "@paxoslabs/amplify-sdk/vaults";

// Utility helpers
import { calculateDeadline } from "@paxoslabs/amplify-sdk/utils";

Global Providers

Set up React Query and your wallet provider:

// src/app/providers.tsx
import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
import { PrivyProvider } from "@privy-io/react-auth";
import type { ReactNode } from "react";

const queryClient = new QueryClient();

export function AmplifyProviders({ children }: { children: ReactNode }) {
  if (!import.meta.env.VITE_PRIVY_APP_ID) {
    throw new Error("Missing VITE_PRIVY_APP_ID env variable");
  }

  return (
    <PrivyProvider appId={import.meta.env.VITE_PRIVY_APP_ID}>
      <QueryClientProvider client={queryClient}>
        {children}
      </QueryClientProvider>
    </PrivyProvider>
  );
}

Wire the providers in your entry point:

// src/main.tsx
import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import App from "./App.tsx";
import { AmplifyProviders } from "./providers.tsx";

createRoot(document.getElementById("root")!).render(
  <StrictMode>
    <AmplifyProviders>
      <App />
    </AmplifyProviders>
  </StrictMode>,
);

Recommended Directory Structure

.env.local

package.json

src

app

App.tsx

providers.tsx

components

DepositForm.tsx

WithdrawForm.tsx

hooks

useAmplify.ts

useBalances.ts

lib

privy.ts

viem.ts

pages

styles

main.tsx

Layer	Directory	Purpose
Providers	`src/app/providers.tsx`	Initialize Privy, React Query, and the Amplify SDK once.
Hooks	`src/hooks/`	Wrap SDK helpers with domain-specific logic and query invalidation.
Components	`src/components/`	Pure UI components that receive prepared data plus callbacks for execution.
Lib	`src/lib/`	Interaction helpers for viem, Privy, or analytics that should not depend on React state.

Server-Side Usage

If you execute transactions from a backend service, mirror the same separation:

server/app.ts – Express/Fastify entry point
server/clients/amplify.ts – initAmplifySDK and helper wrappers
server/services/deposits.ts – orchestrates approvals, permits, or withdrawals

Next Steps

Follow the Deposits guide to implement your first deposit flow
See initAmplifySDK for full API reference
Check Logging for debug configuration

Getting started

Amplify

USDG0

Installation & Setup

Requirements

Install the SDK

Install Peer Dependencies

Environment Variables

Initialize the SDK

Basic

With Custom RPCs

With All Options

React Integration Hook

Verify Installation

Package Exports

Global Providers

Recommended Directory Structure

Server-Side Usage

Next Steps

​Requirements

​Install the SDK

​Install Peer Dependencies

​Environment Variables

​Initialize the SDK

​Basic

​With Custom RPCs

​With All Options

​React Integration Hook

​Verify Installation

​Package Exports

​Global Providers

​Recommended Directory Structure

​Server-Side Usage

​Next Steps

Requirements

Install the SDK

Install Peer Dependencies

Environment Variables

Initialize the SDK

Basic

With Custom RPCs

With All Options

React Integration Hook

Verify Installation

Package Exports

Global Providers

Recommended Directory Structure

Server-Side Usage

Next Steps