Core capabilities
How it works
Agent discovers a product
Your agent identifies what it needs to buy and sends a product URL to Rye's checkout endpoint.
Rye responds with a price
Rye returns the exact total (product + shipping + tax) via 402 Payment Required.
AgentCash signs and pays
AgentCash signs a USDC payment and resends the request. No manual wallet management.
Rye verifies and fulfills
Rye verifies payment, executes checkout on the merchant's site, and returns order confirmation with tracking.
Why It matters
The Rye + AgentCash Advantage
With AgentCash + Rye
One wallet, no API key
No payment provider accounts, no card vaults, no PCI surface
HTTP-native payments
x402 embeds payment directly into the web request
15,000+ merchants
Rye's Universal Checkout handles fulfillment across the open web
Stablecoin payments, instant settlement
Without
Multiple payment provider integrations per merchant
Card tokenization, PCI compliance, credential management
Limited merchant coverage or manual fulfillment
Fiat rails with delays and intermediaries
Onboarding
Rye APIs available through AgentCash.
Run in your terminal
Onboard into AgentCash, make one live call against this API, then save it into your agent's persistent context.
Onboard AgentCash
Sets up AgentCash and routes you through credits if needed.
npx agentcash onboardTry the API
Discovers the origin and walks the first live call path.
npx agentcash try https://x402.rye.comAdd for reuse
Keeps Rye available in your agent's persistent context.
npx agentcash add https://x402.rye.com