Enterprise Crypto Onramp API

Let Your UsersBuy Crypto Instantly

Add fiat-to-crypto purchases to your app in minutes. Our API handles KYC, payments, and delivery - you just earn 99% of every transaction.

Start Integrating View API Docs

Only 1% platform fee

Instant payouts

No volume limits

api-example.js

// Create an onramp session
const response = await fetch(
  'https://api.web3pay.com/v1/onramp',
  {
    method: 'POST',
    headers: {
      'X-API-Key': 'wp3_live_xxx...',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      // Recipient wallet - where crypto is sent
      wallet_address: '0x742d35Cc6...',
      crypto_currency: 'ETH',
      fiat_amount: 10000, // $100.00
      fiat_currency: 'USD'
    })
  }
);

const { client_secret } = await response.json();

// Open the payment widget
Web3PayWidget.open(client_secret);

99% Revenue

Secure Payments

Simple Integration

How It Works

Get your users buying crypto in four simple steps. No blockchain expertise required.

Integrate Our API

Add a few lines of code to create onramp sessions. Use our REST API, JavaScript SDK, or drop in our embeddable widget.

User Pays with Card

Your user enters their card details in our secure checkout. We handle KYC and compliance automatically.

Crypto Delivered

Crypto is purchased and sent directly to your user's wallet. ETH, USDC, SOL, and more - on their preferred network.

You Get Paid

Your earnings are sent directly to your wallet on Ethereum, Polygon, or Base. No invoices, no waiting - fully decentralized.

Powerful Features

Everything You Need to Monetize Crypto

A complete fiat-to-crypto solution with multiple integration options. No blockchain expertise required.

Secure Card Payments

Secure card processing with support for all major cards, Apple Pay, and Google Pay.

Built-in KYC & Compliance

We handle KYC, AML, and regulatory compliance automatically. You focus on building your product while we manage the legal complexity.

Instant Crypto Payouts

Earnings sent directly to your wallet on Ethereum, Polygon, or Base. No invoices, no waiting periods - get paid instantly on every transaction.

Multi-Currency Support

Accept USD, EUR, and GBP. Users can purchase ETH, USDC, MATIC, SOL and more on Ethereum, Polygon, Base, or Solana.

Embeddable Widget

Drop our white-label widget into your app with one line of code. Fully customizable to match your brand. Works on web and mobile.

JavaScript SDK

Full-featured TypeScript SDK with type definitions. Create sessions, open widgets, and handle events programmatically.

REST API

Simple REST API for server-to-server integration. Create sessions, check status, and manage transactions from any language.

API Key Management

Separate keys for test and production environments. Rotate keys, set permissions, and monitor usage from your dashboard.

Real-time Webhooks

Get instant notifications for transaction status changes. Idempotent event handling with automatic retries built in.

Test Environment

Full sandbox environment with test API keys. Simulate transactions without real money using test cards.

Analytics Dashboard

Track volume, transactions, and fees in real-time. Export reports, monitor conversion rates, and analyze your business growth.

Enterprise Security

Bank-grade encryption, PCI DSS compliant, and SOC 2 certified infrastructure. Your users' data is always protected.

Multi-Chain

Multi-Chain Support

Let your users purchase crypto on their preferred network. We support the most popular chains and tokens.

⟠

Ethereum

ETH

The original smart contract platform

Supported Tokens

ETHUSDCUSDT

⬡

Polygon

MATIC

Fast and low-cost transactions

Supported Tokens

MATICUSDCUSDT

▲

Base

ETH

Coinbase's L2 network

Supported Tokens

ETHUSDC

◎

Solana

SOL

High-performance blockchain

Supported Tokens

SOLUSDC

Accepted Fiat Currencies

Pay with your local currency

USD

US Dollar

€

EUR

Euro

GBP

British Pound

Simple Pricing

Simple, Transparent Pricing

No monthly fees. No hidden costs. You only pay when you make money.

Pay As You Go

1%per transaction

You keep 99% of every transaction. We take 1%.

What's Included

Unlimited API calls
All supported cryptocurrencies
Embeddable widget
JavaScript SDK
Real-time webhooks
Analytics dashboard
Test environment
Email support

Example Transaction

User buys$100 of ETH

Platform fee (1%)-$1.00

You receive$99.00

Instant Wallet Payouts: Earnings sent directly to your wallet on Ethereum, Polygon, or Base. No invoices, fully decentralized.

Get Started Free View Documentation

Processing over $100k/month? Contact us for volume discounts

Ready to get started?

Start Monetizing Crypto Today

Join hundreds of apps already using Web3 Pay to earn revenue from crypto purchases. Get your API keys in minutes and start integrating.

Create Free Account Read the Docs

5 minute integration

No setup fees

Full SDK included