Exact
received
10.15
delta
±0.00
Paid
Stablecoin payments for businesses and AI agents
Stablecoinpayments,built for businessesand AI agents.
Accept supported stablecoins, verify exact assets, and reconcile every payment—whether it starts in a checkout or a programmatic agent workflow.
Exact assetsVerified stateReconciled payments
Live payment object Test mode
AC
Acme Supply
Order #1048
Amount due
$10.15
pay_•••f1b
$
Exact assetUSDC
Base network
Live payment state
01/03Transfer detected
10.15 USDC · Base
Contract · amount · finality
The payment rail / 01—04
One payment object.A complete journey.
Follow the same resource from merchant intent to independently verified payment and durable accounting.
pay_1bcca•••f1bLive resource
Payment objectStage 01
$10.15
asset
USDC · Base
order
#1048
Current event
Processingcheckout_session.created
10.15 USD · USDC on Base
01020304
CreateObserveConfirmDeliver
One payment objectExact asset identity
Network-aware by design
One integration.Exact assets on supported rails.
A symbol is not an asset. Paybytoken binds each supported token to its network identity, contract or mint, decimal rules, and confirmation policy.
checkout_session.create
Accept $10.15
currency "usd"
ui_mode "embedded"
supported_tokens
USDC / base
USDC / ethereum
USDT / ethereum
USDC / solana
The merchant defines eligibility once. No chain credentials enter the browser.
Identity resolver Match 01
USDC
- network
- eip155:8453
- contract
- 0x833…2913
- decimals
- 6
Fingerprint7C:91:0F
01Network finality
USDC / Base
Allowlisted contract
02Network finality
USDC / Ethereum
Allowlisted contract
03Network finality
USDT / Ethereum
Allowlisted contract
04Network finality
USDC / Solana
Allowlisted mint
Exact asset identity Route-specific finality One normalized ledger
Checkout surfaces / 03
Change the surface.Keep the payment rail.
Surface previewHosted checkout
checkout.paybytoken.io
Hosted by Paybytoken
$10.15
USDC · Base
Exact asset selected
Continue to payment
Optional checkout accelerator
Paybytoken Pay lets eligible returning customers use a balance.
Controlled pilotRun the Pay demo
Reconciliation is the product
Real payments are not always exact.
Transfers can arrive short, over, late, or more than once. Paybytoken records what actually happened and applies an explicit policy instead of flattening every case into success or failure.
Expected10.15 USDC
Underpaid
received
9.50
delta
−0.65
Policy review
Overpaid
received
11.00
delta
+0.85
Fully accounted
Expired
received
—
delta
closed
Closed safely
Built for software and teams
A payment rail for businessesand AI agents.
The same payment contract can power a human checkout and a programmatic agent flow. Businesses retain policy control while agents receive bounded actions and verifiable outcomes.
One payment contract
Policy controlledCreate a bounded payment intent
The merchant defines the amount, eligible assets, expiry, and business context before any actor can pay.
Let software act safely
Short-lived scopes and idempotent operations give an agent a narrow action instead of an open-ended credential.
Verify the outcome
Machine-readable state and signed events let both merchant systems and agents confirm what actually happened.
agent_payment · agps_7d91 Authorized
Agent-authorized payment
250.00 USDC
agent budget
250.00 USDC
scope · procurement
merchant payment
Order #AX-204
USDC · Base
- Limit
- 250 USDC
- Expires
- 10 minutes
- Mode
- Test
- Result
- Awaiting payment
Human and agent flows share exact asset validation, payment state, and reconciliation.
Delegated agent authorization remains a controlled design-partner capability.
Server-side first
One API for stablecoin payments.
Secret credentials never enter the storefront
Short-lived client secrets scope browser access
Webhooks and retrieval—not redirects—confirm success
merchant-server.ts Node.js
const session = await paybytoken.checkoutSessions.create({
currency: "usd",
line_items: order.items,
supported_tokens: [
{ currency: "USDC", chain: "base" }
],
ui_mode: "embedded",
allowed_origin: "https://shop.example.com"
});
return {
client_secret: session.client_secret,
url: session.url
};idempotentexact assetsigned webhook
Operations after checkout
Every payment leavesoperational evidence.
payment event stream Live
12:04:11.208chain.transfer.detectedobservation recorded
12:04:18.441payment_intent.succeeded3 confirmations
12:04:18.507balance_transaction.posted+10.15 USDC
12:04:19.032webhook.deliveredHTTP 200
Operational guarantees
01
Idempotent creation
Safe retries never create an ambiguous order.
02
Authenticated retrieval
Current payment state remains available on demand.
03
Signed delivery
Webhook evidence is verifiable and replayable.
04
Ledger boundary
Merchant balances update from durable accounting entries.
The payment resolves here
Funds received.Order ready.
Take the same object from creation to durable accounting and a signed merchant event. The browser never decides whether the payment succeeded.
pay_7d91b8a31c Succeeded
Payment receipt
10.15 USDC
01Transfer matchedBase · exact asset
02Ledger postedmerchant +10.15
03Webhook deliveredsigned · HTTP 200
Merchant actionFulfil order