PLATFORM
Full stack
Facilitator, gateway, dashboard, SDKs, paywall, plugins
Ax402 is an end-to-end x402 platform. Sellers configure APIs in the control plane; buyers pay through the gateway using SDKs, the React paywall, CLI, MCP tools, or e-commerce plugins — all settled by the same facilitator.
Stack layers
- Facilitator — verifies payment authorizations and settles on-chain ( guide )
- Control plane + gateway — multi-tenant API registry, route pricing, verify/settle middleware, reverse proxy to upstream ( API reference )
- Seller dashboard — this web app: APIs, endpoints, domains, analytics, API keys
- SDKs — TypeScript, Go, Python control-plane clients plus buyer modules
- Tools —
ax402CLI and MCP server for agents and CI - React paywall — wallet-connect overlay for SPAs
- E-commerce plugins — WordPress, WooCommerce, Shopify starters
Traffic flow
Buyer (SDK / paywall / plugin / CLI) → gateway hostname → control plane config + facilitator verify/settle → upstream API. Unpaid requests receive HTTP 402 with payment requirements.
Integration paths
Gateway & dashboardNo upstream code changes — configure in the seller UI.SDK integrationAutomate the control plane from your codebase.React paywallIn-browser wallet UX for gateway URLs.E-commerce pluginsWordPress, WooCommerce, Shopify route sync.Agent guideLLM-friendly bootstrap, recipes, and tool reference.Buyer clientsPay gateway URLs from TS, Go, Python, CLI.
Repositories
- ax402-backend — control plane + gateway
- ax402-facilitator — settlement service
- ax402-sdk — SDKs, CLI, MCP, plugins, paywall
- x402-foundation/x402 — payment protocol