{"type": "article", "title": "Show HN: X402-express. Pay-per-call HTTP 402 middleware for AI agents on Base L2", "publisher": "Web Pulse", "url": "https://wpnews.pro/news/show-hn-x402-express-pay-per-call-http-402-middleware-for-ai-agents-on-base-l2", "original_source": "https://github.com/Evozim/m2mcent-sdk", "published": "2026-06-04T03:57:29+00:00", "accessed": "2026-06-04", "id": "show-hn-x402-express-pay-per-call-http-402-middleware-for-ai-agents-on-base-l2"}