- Any chain in, - your chain out. -
- -- Cross-chain USDC settlement for x402 (Coinbase's HTTP 402 protocol) and MPP (Machine - Payments Protocol). Buyer pays on Solana, seller receives on Stellar. No SDK, no - dashboard, no code changes. -
- - -# 1. Register your wallet (one-time) -curl -X POST https://facilitator.402.md/register \ - -H "Content-Type: application/json" \ - -d '{"wallet": "GSELLER...", "network": "stellar:pubnet"}' - -# 2. Use standard @x402/express — zero 402md code -import { paymentMiddleware } from "@x402/express" - -app.use(paymentMiddleware({ - "GET /your-endpoint": { - accepts: [ - { scheme: "exact", network: "eip155:8453", payTo: "0x4C95...c3b9", price: "$0.001", extra: { merchantId: "7c-vQZHANEd5ICp" } }, - { scheme: "exact", network: "solana:mainnet", payTo: "4r7q...BDP5", price: "$0.001", extra: { merchantId: "7c-vQZHANEd5ICp" } }, - { scheme: "exact", network: "stellar:pubnet", payTo: "GAX5...5HZR", price: "$0.001", extra: { merchantId: "7c-vQZHANEd5ICp" } }, - ], - }, -}, "https://facilitator.402.md")) - -# Buyers on Base, Solana, or Stellar can now pay you.-
One chain is not enough
-- x402 lets any API charge for access. But every facilitator today locks sellers to a - single chain — and leaves money on the table. -
- -Chain lock-in
-- 30 x402 facilitators, all single-chain. Buyer on Solana, seller on Stellar? Payment - fails. Revenue lost silently. -
-Wrong tokens, wrong path
-- DEX-based bridges mean wrapped USDC, slippage, and risk. Native USDC via CCTP V2 is - the only clean path. -
-Fragmented protocols
-x402 and MPP serve different ecosystems. No one speaks both — until now.
-Agents don't choose chains
-- AI agents need to pay, not navigate blockchain infrastructure. The payment layer - should be invisible. -
-Three steps. That's it.
- -One curl to start receiving
-Register your wallet
-- POST /register with your address and chain. Get - facilitator addresses on all supported chains. -
-Use standard x402
-- Add @x402/express middleware. Point - payTo to your facilitator address. Zero 402md - dependencies. -
-Receive USDC on your chain
-- Buyer pays on any chain. 402md settles via CCTP V2. Native USDC, directly to - your wallet. -
-Pay from any chain
-Discover the seller
-- GET the API. Receive a 402 response with facilitator - addresses on your chain. -
-Pay with USDC
-- Sign a standard x402 payment on Base - Solana or - Stellar. No bridge, no swap. -
-Get the resource
-- Payment verified in milliseconds. Resource delivered instantly. Settlement - runs in the background. -
-Opinionated choices, for good reasons
-- Every decision optimizes for one thing: the seller should do zero extra work to accept - payments from any chain. -
- -Non-custodial
-- CCTP V2 mints USDC directly to the seller's wallet. 402md never holds your funds. -
-Free
-- 0% platform fee. Only network gas deducted from settlement. Fixed schedule, no - surprises. -
-Zero dependencies
-- Sellers use standard @x402/express from Coinbase. No 402md SDK, no custom packages. -
-Dual protocol
-x402 and MPP through one facilitator. Two ecosystems, one registration.
-Native USDC only
-Circle CCTP V2 burns and mints real USDC. No wrapped tokens, no slippage.
-Three chains
-Base, Solana, Stellar. Adding a new EVM chain is a config change, not a deploy.
-Free. Seriously.
-- Zero platform fee. The only cost is a fixed gas allowance per route, deducted from the - seller's payout. Here's what that looks like on a $1.00 payment. -
- -| Route | -Seller receives | -Gas allowance | -
|---|---|---|
| - Stellar → - Stellar - | -$0.99999 | -$0.00001 0.001% | -
| - Solana → - Solana - | -$0.9990 | -$0.0010 0.10% | -
| - Base → - Base - | -$0.9980 | -$0.0020 0.20% | -
| - Stellar → - Solana - | -$0.9985 | -$0.0015 0.15% | -
| - Solana → - Stellar - | -$0.9975 | -$0.0025 0.25% | -
| - Stellar → - Base - | -$0.9975 | -$0.0025 0.25% | -
| - Base → - Stellar - | -$0.9968 | -$0.0032 0.32% | -
| - Base → - Solana - | -$0.9965 | -$0.0035 0.35% | -
| - Solana → - Base - | -$0.9965 | -$0.0035 0.35% | -
Common questions
- -What is Facilitator by 402md?
-How is this different from other x402 facilitators?
-What chains are supported?
-How much does it cost?
-Is it custodial?
-How long does settlement take?
-Do I need to install any 402md package?
-What about same-chain payments?
-What is MPP?
-One curl. All chains.
-- Register your wallet and start accepting cross-chain USDC in under a minute. No - dashboard, no login, no SDK. -
- -