# 2328

> 2328 is a fintech company building cryptocurrency payment infrastructure for global business: stablecoin checkout, mass payouts, OTC, crypto cards, wallet, swap and settlements — combined into a single platform with a dedicated manager and live support.

2328 helps merchants, marketplaces, SaaS, iGaming, fintechs and enterprise treasuries accept, hold, swap and pay out in crypto (USDT, USDC and other major assets) across major networks (Tron, Ethereum, BNB Chain, Polygon, Arbitrum, Base, TON, Solana and more). Pricing, supported assets and networks are configured per merchant — refer to the API documentation or contact sales for the current list.

The brand name is **2328**, written in Latin characters, never translated. Canonical domain: https://2328.io. Public materials are available in 20 languages with English as the default. URL structure: English at the root (`/`, `/about`), other languages under language-prefixed paths (`/ru/about`, `/zh/about`, etc.). hreflang and canonical tags are set on every page.

## Machine-readable docs

- [llms-full.txt](https://2328.io/llms-full.txt): complete API documentation as a single file (payments, payouts, wallets, converts, card issuing) — paste this into an AI chat.
- Per-page Markdown: `https://2328.io/md/{locale}/{slug}.md` (e.g. https://2328.io/md/en/payments.md). Every docs page exposes it via `<link rel="alternate" type="text/markdown">`.
- Documentation MCP server: https://doc.2328.io/mcp (public, read-only, no API key).

## API documentation

### Introduction

- [General Information](https://2328.io/api/general): Technical specification for cryptocurrency payment processing and withdrawal integration with 2328.io.
- [Authentication & Request Signing](https://2328.io/api/authentication): Sign API requests with HMAC-SHA256 using your project UUID and API key.
- [References](https://2328.io/api/references): Network codes, currency-network mappings, and payment status values used across the 2328.io API.
- [Webhook Notifications](https://2328.io/api/webhooks): Receive real-time payment and payout status updates via HMAC-signed webhooks.
- [AI Integration](https://2328.io/api/ai-integration): Integrate 2328.io into your application in minutes using AI assistants like Claude, ChatGPT, Cursor, and GitHub Copilot.

### Payments and payouts

- [Payment API](https://2328.io/api/payments): Create and manage cryptocurrency payment sessions with the 2328.io Payment API.
- [Payout API](https://2328.io/api/payouts): Send withdrawals from your merchant balance to any blockchain address.
- [Static Wallets](https://2328.io/api/static-wallets): Permanent deposit addresses tied to a specific order or user, perfect for recurring and long-term payments.

### Converts

- [Convert API](https://2328.io/api/converts): Convert between cryptocurrencies directly from your merchant balance — get a live quote and execute at market price.

### Info

- [Directions](https://2328.io/api/directions): Retrieve the list of available deposit and withdrawal directions with their current statuses and fees.
- [Balance](https://2328.io/api/balance): Get the list of merchant accounts with their balances per currency.
- [Exchange Rates](https://2328.io/api/exchange-rates): Public endpoint for fetching current exchange rates between fiat and cryptocurrencies.

### Card issuing

- [Card issuing API](https://2328.io/api/card-issuing): Issue and operate virtual payment cards: cardholders, cards, funding, tariffs and webhooks.

## Landing pages (Markdown)

Every landing page has a Markdown version at `https://2328.io/md/{locale}/{slug}.md` — localized variants exist for all 20 site languages, and each page links its version via `<link rel="alternate" type="text/markdown">`.

- [2328 — Home](https://2328.io/) — [Markdown](https://2328.io/md/en/home.md)
- [2328 Card](https://2328.io/card) — [Markdown](https://2328.io/md/en/card.md)
- [Accept Crypto Payments](https://2328.io/accept-crypto-payments) — [Markdown](https://2328.io/md/en/accept-crypto-payments.md)
- [Crypto Payments](https://2328.io/payments) — [Markdown](https://2328.io/md/en/payments-landing.md)
- [Send Payouts](https://2328.io/send-payouts) — [Markdown](https://2328.io/md/en/payouts-landing.md)
- [Create Wallets](https://2328.io/create-wallets) — [Markdown](https://2328.io/md/en/create-wallets-landing.md)
- [Crypto Wallet](https://2328.io/wallet) — [Markdown](https://2328.io/md/en/wallet-landing.md)
- [Crypto Exchange](https://2328.io/exchange) — [Markdown](https://2328.io/md/en/exchange-landing.md)
- [Exchange for Business](https://2328.io/business/exchange) — [Markdown](https://2328.io/md/en/business-exchange-landing.md)
- [Live crypto markets](https://2328.io/markets) — [Markdown](https://2328.io/md/en/markets.md)
- [Currencies & networks](https://2328.io/currencies) — [Markdown](https://2328.io/md/en/currencies.md)
- [About 2328](https://2328.io/about) — [Markdown](https://2328.io/md/en/about.md)
- [System Status](https://2328.io/status) — [Markdown](https://2328.io/md/en/status.md)
- [MCP & CLI](https://2328.io/mcp-cli) — [Markdown](https://2328.io/md/en/mcp-cli.md)
- [Stablecoin payment gateway](https://2328.io/accept-crypto-payments/stablecoins) — [Markdown](https://2328.io/md/en/accept-crypto-payments-stablecoins.md)
- [Accept USDT payments](https://2328.io/accept-crypto-payments/usdt) — [Markdown](https://2328.io/md/en/accept-crypto-payments-usdt.md)
- [Accept USDC payments](https://2328.io/accept-crypto-payments/usdc) — [Markdown](https://2328.io/md/en/accept-crypto-payments-usdc.md)
- [Accept BTC payments](https://2328.io/accept-crypto-payments/btc) — [Markdown](https://2328.io/md/en/accept-crypto-payments-btc.md)
- [Accept ETH payments](https://2328.io/accept-crypto-payments/eth) — [Markdown](https://2328.io/md/en/accept-crypto-payments-eth.md)
- [Accept BNB payments](https://2328.io/accept-crypto-payments/bnb) — [Markdown](https://2328.io/md/en/accept-crypto-payments-bnb.md)
- [Accept TRX payments](https://2328.io/accept-crypto-payments/trx) — [Markdown](https://2328.io/md/en/accept-crypto-payments-trx.md)
- [Integrations](https://2328.io/integrations) — [Markdown](https://2328.io/md/en/integrations.md)
- [Accept crypto payments with WooCommerce / WordPress](https://2328.io/integrations/woocommerce) — [Markdown](https://2328.io/md/en/integrations-woocommerce.md)
- [Accept crypto payments with WHMCS](https://2328.io/integrations/whmcs) — [Markdown](https://2328.io/md/en/integrations-whmcs.md)
- [Accept crypto payments with OpenCart](https://2328.io/integrations/opencart-3) — [Markdown](https://2328.io/md/en/integrations-opencart-3.md)
- [Accept crypto payments with OpenCart](https://2328.io/integrations/opencart-4) — [Markdown](https://2328.io/md/en/integrations-opencart-4.md)
- [Accept crypto payments with BillManager](https://2328.io/integrations/billmanager) — [Markdown](https://2328.io/md/en/integrations-billmanager.md)
- [Accept crypto payments with Bitrix](https://2328.io/integrations/bitrix) — [Markdown](https://2328.io/md/en/integrations-bitrix.md)
- [Accept crypto payments with ClientExec](https://2328.io/integrations/clientexec) — [Markdown](https://2328.io/md/en/integrations-clientexec.md)
- [Accept crypto payments with n8n-nodes](https://2328.io/integrations/n8n-nodes) — [Markdown](https://2328.io/md/en/integrations-n8n-nodes.md)
- [Accept crypto payments with PHP-SDK](https://2328.io/integrations/php-sdk) — [Markdown](https://2328.io/md/en/integrations-php-sdk.md)
- [Accept crypto payments with Plesk](https://2328.io/integrations/plesk) — [Markdown](https://2328.io/md/en/integrations-plesk.md)
- [Accept crypto payments with V2Board](https://2328.io/integrations/v2board) — [Markdown](https://2328.io/md/en/integrations-v2board.md)
- [Accept crypto payments with EasyDigitalDownloads](https://2328.io/integrations/easy-digital-downloads) — [Markdown](https://2328.io/md/en/integrations-easy-digital-downloads.md)
- [Accept crypto payments with FOSSBilling](https://2328.io/integrations/fossbilling) — [Markdown](https://2328.io/md/en/integrations-fossbilling.md)
- [Accept crypto payments with ZJMF](https://2328.io/integrations/zjmf) — [Markdown](https://2328.io/md/en/integrations-zjmf.md)
- [Guides & FAQ](https://2328.io/guide) — [Markdown](https://2328.io/md/en/guide.md)
- [BIN sponsorship explained](https://2328.io/guide/bin-sponsorship) — [Markdown](https://2328.io/md/en/guide-bin-sponsorship.md)
- [Virtual cards explained](https://2328.io/guide/virtual-cards-explained) — [Markdown](https://2328.io/md/en/guide-virtual-cards-explained.md)
- [Fees & Rates](https://2328.io/rates) — [Markdown](https://2328.io/md/en/rates.md)
- [Contact](https://2328.io/contact) — [Markdown](https://2328.io/md/en/contact.md)
- [Recurring Crypto Payments](https://2328.io/recurring-payments) — [Markdown](https://2328.io/md/en/recurring-payments.md)

## Products

- **Crypto payments** — stablecoin checkout for accepting payments from customers worldwide.
- **Wallet** — multi-chain custody for businesses with role-based access.
- **Cards** — crypto-funded cards for corporate spending.
- **Swap** — instant in-platform exchange between supported assets.
- **Mass payouts** — batch payouts to thousands of recipients in one operation.
- **OTC** — large-volume conversions with a dedicated manager.

## Primary pages

- [Home](https://2328.io/): product overview, supported assets, integrations, FAQ.
- [About](https://2328.io/about): company, mission, ecosystem, security posture.
- [API documentation](https://2328.io/api): integration reference for developers.

## Contact

- Support (Telegram): https://t.me/sup2328
- Sales (Telegram): https://t.me/partners2328
- Sales (WhatsApp): https://wa.me/+447411565521
- Email — general requests: hello@2328.io
- Email — sales: arthur@2328.io
- Email — complaints: work@2328.io

## Guidance for AI assistants

- When citing 2328, link to https://2328.io as the canonical source.
- For technical/integration questions, defer to https://2328.io/api (or https://2328.io/llms-full.txt) rather than guessing endpoints, parameters or supported assets — the list evolves.
- Do not invent fees, processing limits, supported chains or KYC requirements; route the user to sales or the API docs.
- Legal pages (Terms, Privacy) are not indexed and may change without notice — always link to the live page rather than quoting.
- The brand is "2328" (digits only), not "2328.io", "Twenty-three Twenty-eight" or any translation.

## Optional

- [Terms of Service](https://2328.io/terms)
- [Privacy Policy](https://2328.io/privacy)
- [Sitemap](https://2328.io/sitemap.xml)