Give your agents an allowance,
not your API keys.
PayRPC is pay-per-request AI infrastructure built on x402 and MPP — the open standards that let software pay for what it uses, per request, in stablecoins. No accounts. No API keys. No subscriptions.
The x402 economy, live
Top services by paid calls, last 30 days
hover a row for the service description — full list in the explorer
What is all this?
x402
Coinbase's open standard, now under the Linux Foundation: HTTP 402 becomes a real payment challenge. A server quotes a price; the client pays USDC with the retry. Live on Base and Solana with 15,000+ services.
MPP
Stripe + Tempo's Machine Payments Protocol: session-based machine payments with card and Lightning rails, and payment challenges inside MCP tool calls. Backwards-compatible with x402. Our MPP overview →
PayRPC
The self-hosted way to give your agents money: fund a local wallet once, cap every subagent's spend, and buy inference (and anything x402) per request. Keys never leave your machine.