MicroAPI Payments for the Programmable Web
Monetize APIs, endpoints, or content with one-click, on-chain payments. Built on the open x402 standard for programmable paywalls, trustless settlement, and verifiable receipts across Solana and more.
Universal API Monetization
Require payment for any endpoint in one line of code — fully programmable, no lock-in, extensible to any HTTP resource.
Crypto Payments Built-in
Accept USDC, stablecoins, or native assets instantly — trustless, fast, and gasless for providers. Solana and EVM support out of the box.
AI & Agent Ready
x402’s open spec and agent-friendly headers make it perfect for composable automation, AI agents, and programmable finance.
Permissionless & Trustless
There’s no middleman — anyone can verify payments or build a facilitator/server. Open APIs make integration with any stack easy.
Developer First
Designed for DX: great docs, one-line integration, multi-language SDKs and full-stack generated code samples.
Blazing Fast & Low Cost
Subsecond settlement, $0.001 minimum fees, and 402 flow makes metered APIs affordable for everyone — not just enterprises.
Discover APIs
View Transaction History →How it works
- Client calls a protected endpoint.
- Provider returns 402 with PaymentRequirements.
- Client sends X-PAYMENT header with authorization.
- Provider verifies and settles via facilitator.
- Provider returns 200 with X-PAYMENT-RESPONSE.
Try pay-per-call
Use the agent demo or click the button to simulate a paid request from the server.
PAYER_PUBKEY=<devnet_pubkey> PROVIDER_URL=http://localhost:8080/api/data npm --workspace clients/agent-demo run dev