One checkout.
Every wallet.
Any token.
Splintr is chain-agnostic — buyers pay with whatever they hold on any chain, an AI agent can pay over MCP, and you receive one clean settlement on the chain you choose. Payment options depend on supported networks, live routes and available liquidity. Or skip the integration entirely — invoice anyone, P2P or business, and share a payment link.
Exploring x402? Meet cross-chain commerce.npm install @splintr-dev/react @splintr-dev/serverimport { SplintrProvider, SplintrCheckout } from "@splintr-dev/react";
export default function Checkout({ intentId }: { intentId: string }) {
return (
<SplintrProvider publicKey={import.meta.env.VITE_SPLINTR_PUBLIC_KEY}>
<SplintrCheckout
intentId={intentId}
onSettled={(p) => console.log("Paid:", p.id)}
onError={(err) => console.error(err)}
/>
</SplintrProvider>
);
}A built-in MCP server lets AI agents create intents, follow settlement, send payouts and issue refunds — no wallet clicks.
Stablecoins, native tokens and other supported assets — screened for safety and executable liquidity.
Small balances scattered across chains are combined into one checkout a buyer can actually spend.
The merchant receives exactly the token and chain they invoiced — never a token zoo.
Send a P2P or business invoice as a plain link. The recipient pays with any token on any chain — no code, no wallet homework.
Agent payments.
Beyond the API paywall.
Exploring x402? It standardizes payment for resources. Splintr focuses on the commerce around a payment: cross-chain checkout, shareable invoices, MCP tools, and one clean settlement for the receiver.
Pay from fragmented balances
Route supported tokens across supported chains into the asset the receiver chooses. Only executable, safety-screened routes reach checkout.
Invoice people and businesses
A payment link for a customer, a seller, or a friend. Track expiry, settlement, and refunds against the same payment intent.
Give agents commerce tools
Use authenticated MCP tools to create invoices, inspect routes, follow settlement, and manage payouts and refunds.
Different layers, not a drop-in replacement. x402 supports multiple networks and assets; Splintr does not currently implement the x402 payment handshake.
Compare with x402More assets. One settlement.
Stablecoins, ETH, SOL, memecoins and usable wallet balances can contribute through supported routes. Stock-token catalog entries are not payment options unless their contracts, safety checks and executable liquidity are verified.
- → Combine supported assets across supported networks
- → Tokenized-equity catalog: AAPL, SPY and more
- → Only routes with live, executable liquidity are offered
- → Receive your chosen supported settlement asset
Payment rails for AI agents.
Autonomous agents can't click "connect wallet." Splintr ships a built-in MCP server, so any AI agent can create payments, follow settlement, send payouts and issue refunds across every supported chain on its own.
How it works
Specify amount, currency, settlement chain, token, and wallet. Splintr returns a client secret.
User connects wallets. We scan balances, pick the cleanest combination, and sign one checkout.
Same-chain swap, cross-chain intent, or fallback session. Merchant receives the exact output.
Pay with whatever
is in your wallet.
Your users do not need the right token. They just need enough value. Turn ETH on Base, USDC on Solana, BONK, and forgotten Arbitrum USDT into one usable checkout.
Three modes. One API.
Multiple tokens on one chain executed in a single real transaction.
One signed intent. A solver routes liquidity and lands the exact output.
Multi-route session with clear progress when solver liquidity is unavailable.
For business owners, sellers,
and everyone else.
Don't build a checkout — send an invoice. Create it from the dashboard or the API, share the link, and your customer pays with any token on any chain. You receive one clean settlement, exactly as invoiced. It works the same for a two-person business and for a friend splitting dinner — that's P2P invoicing, and it rides on the same rails.
Pay for what settles.
No subscriptions. No setup fees. You only pay when a payment lands. Network gas and routing-provider charges are separate.
- ✓ Test mode free forever
- ✓ Same-chain + cross-chain routes
- ✓ Webhooks with HMAC signing
- ✓ All supported chains
Crypto payments are splintered.
Your checkout doesn't have to be.
