Sol402 is a paywall orchestration platform built around the emerging x402 (HTTP 402) payment flow. We sit in front of any origin URL or API and turn each request into a pay-per-use interaction: first call returns a standards-compliant 402 challenge, the user or agent pays via Solana USDC, and the request is retried automatically with the payment receipt. Under the hood, Sol402 runs on Cloudflare Workers with KV/R2 storage, uses PayAI’s facilitator for verified settlement, and proxies responses 1:1 once the payment clears. Builders can mint links or API keys in seconds through our self-serve dashboard, monitor real-time usage (ClickHouse-backed analytics, Grafana hooks), and customize pricing per endpoint.