SWAP_AS_A_SERVICE

Embed Crypto
Exchange.
No_KYC. Ever.

Drop a privacy-first crypto swap into any site in 30 seconds. Your users trade BTC, ETH, USDT, XMR and 4,600+ coins across 16 engines — you earn on every settlement. No custody. No compliance. No code.

Init_WidgetFREE // NO_EMAIL // INSTANT_KEY » How_It_Works
16_ENGINES_ONLINE BEST_RATE_ROUTING GHOST_MODE_READY
[ LIVE_DEMO // RATES_ARE_ILLUSTRATIVE ]
16Exchange_Engines
4,600+Supported_Coins
10Languages
ZEROKYC // Logs // Custody
{{ic:shield}}
No_KYC_Required
Zero identity verification, ever
{{ic:filex}}
No_Logs
No data retention or tracking
{{ic:coins}}
Crypto_Native
Pay in crypto, earn in crypto
{{ic:zap}}
Earn_Per_Swap
Rev-share to your BTC balance
WHY_404.CASH

Everything to Monetize Crypto Swaps

A complete swap infrastructure that embeds into any website, app, or platform — and pays you on every trade.

01
{{ic:shield}}

Zero_KYC

No identity verification. No documents. No data retention. Built for privacy-first platforms that respect their users.

02
{{ic:zap}}

30s_Setup

Copy one HTML snippet. Paste it into your site. The widget auto-initializes with your config from the merchant portal. Done.

03
{{ic:coins}}

Earn_Per_Swap

Revenue share on every custodial swap, credited to your internal BTC balance and withdrawable as XMR — or referral credit on fallback swaps.

04
{{ic:layers}}

Multi_Provider

Aggregates rates from 16 non-KYC exchange engines. Best rate wins automatically. Built-in redundancy and instant failover.

05
{{ic:ghost}}

Ghost_Mode

Optional privacy routing through Monero (XMR). Breaks the on-chain link between input and output for maximum privacy.

06
{{ic:sliders}}

Fully_Themed

Dark and light modes. Custom accent colors. Domain locks. Provider filters. Custom CSS injection. All from the portal.

INTEGRATION

Zero to Earning in 5 Minutes

Four steps to add a no-KYC crypto swap to your website.

01
Register

Create an anonymous merchant account. No email required. Get your widget key instantly.

02
Configure

Spin up a widget. Choose coins, providers, theme. Set your rev-share model.

03
Embed

Copy two lines of HTML. Paste into your site. The widget renders and connects automatically.

04
Earn

Track swaps, volume, and earnings in your dashboard. Withdraw to any address, anytime.

THEMING

Adapts to Your Brand

One widget, every aesthetic. Ships with three skins × light/dark, custom accent colors, and full CSS override support. Switch a skin below — the whole site responds.

https://your-site.com
DEVELOPER_FRIENDLY

Embed in Seconds

Two lines of HTML. Or drive it programmatically with the JavaScript API.

// drop-in_html
<!-- 404.cash swap widget -->
<div data-swap-widget
     data-widget-key="wk_live_x9f2"
     data-theme="dark"></div>
<script src="https://404.cash/widget.iife.js"></script>
// javascript_api
SwapWidget.init({
  container: '#my-swap',
  widgetKey: 'wk_live_x9f2',
  theme:     'dark',
  allowGhost: true,
  onSettle:  (tx) => console.log(tx),
});
FAQ

Common Questions

Everything you need to know about 404.cash.

What is 404.cash?{{ic:chev}}
404.cash is a Swap-as-a-Service platform that lets you embed a no-KYC crypto exchange widget on any website. It aggregates rates from 16 exchange engines covering 4,600+ coins, and merchants earn revenue from every swap their users make.
How do merchants earn money?{{ic:chev}}
Two ways: custodial rev-share, where 404.cash settles the swap and credits a share of swap revenue to your internal BTC balance, or referral fallback, a non-custodial swap attributed to the platform that earns you a referral credit. Both models are supported per widget.
How do I get paid?{{ic:chev}}
Your revenue share accrues automatically to an internal BTC balance as swaps settle. You can withdraw it as XMR from the merchant dashboard at any time.
Which cryptocurrencies are supported?{{ic:chev}}
Over 4,600 cryptocurrencies across 16 exchange engines, including BTC, ETH, USDT, USDC, XMR, SOL, and thousands more. The multi-provider architecture ensures maximum coverage and best rates.
Is KYC required?{{ic:chev}}
No. 404.cash is built for privacy. No identity verification, no documents, no data retention. Merchants create anonymous accounts and their users swap without any KYC requirements.
How does Ghost Mode work?{{ic:chev}}
Ghost Mode routes swaps through XMR (Monero) as an intermediate step, splitting the trade into two legs — input coin to XMR, then XMR to output coin — which breaks the on-chain link between input and output for untraceable transactions.
Is there a platform fee?{{ic:chev}}
No. The widget and dashboard are 100% free — no plans, no subscriptions, no platform fee, no prepaid quota. Every feature is available to everyone, and you earn on every swap.
Can I use my own domain?{{ic:chev}}
Yes. Custom domains are free for everyone, providing a fully white-labeled experience with no 404.cash branding visible to end users.
DEPLOY_NOW

Ready to Monetize Swaps?

Free forever. No credit card. No email. No KYC. Obviously.

Create_Merchant_Account» INSTANT_WIDGET_KEY