Agent-payable Monero & Zcash payment watching (view-key webhooks, historical scans, native XMR/ZEC top-ups) plus DeFi liquidation + Ethereum builder data. REST + MCP, paid per call via x402 USDC on Base — no account, no API key. Live at api.seneschal.space.
Duolingo-style game loop for Python and Java basics — built because cramming syntax never stuck, but daily drills did.
Payment webhook chaos lab that reproduces duplicate-order races, proves a D1 idempotency fix, and emits Sentry traces. DEV Summer Bug Smash 2026.
BillingWebhookKit: browser-only Lemon Squeezy payment webhook test workbench for fixtures, event coverage, HMAC signatures, idempotency, checkout smoke reports, and CI replay.
Free anti-overengineering checklist and production-control rules for AI coding agents, with a signed full kit for indie builders.
Local Razorpay webhook debugger with live inspection, forwarding, replay, and private payload history.
To associate your repository with the payment-webhooks topic, visit your repo's landing page and select "manage topics."