Production HMAC sig verification, replay-attack guard, customer + founder emails, Vercel deploy, 7-day support. One file in your repo. Zero half-finished docs you have to debug at 1 AM.
First real $29 checkout fired six webhook events. All six returned 200 OK in under one second. Customer + founder confirmation emails delivered via Resend.
Working source: github.com/bshelby88/sentry-forge-landing/api/stripe-webhook.js — fork it free, or pay me $199 to fit it to your stack.
→ Read: webhook blog — deep writeups on signature verification, multi-event handling, idempotency.
→ Try: Free webhook signature diagnostic — paste your sig + body + secret, get instant verdict. Pure client-side; nothing logged.
crypto.timingSafeEqual() for the constant-time compare.checkout.session.completed. Resend by default. Postmark / SendGrid swap is one function call.Default: Next.js API routes on Vercel. Other combos I've done or can do same-day: Express on Render, Hono on Cloudflare Workers, SvelteKit endpoints, Remix actions. If you're on something exotic, send me the framework and I'll tell you in 30 minutes whether it's a fit.
Yes — here. The $199 buys you the time to fit it to your repo, your env vars, your tier map, your email copy, and to verify it end-to-end with a real charge in front of you.
If it's a bug in the code I shipped, I fix it free, no time limit. If it's a new feature you want (new tier, new event type, new email provider), that's a follow-on engagement at hourly rate (I'll tell you up front).
I shipped my own pipeline last night, the code is fresh, and I want three testimonials more than I want $400. After the third client it's $399. Same code, same scope, same support window — just less aggressive pricing while I'm building the case studies.
If I miss the 24-hour delivery window from receipt of your intake brief, I refund. If your Stripe events aren't hitting 200 by the end of the 7-day support window because of my code, I refund. Beyond that, this is a fixed-scope service and the standard "delivered as agreed" rules apply.
Buy at the link above. Stripe webhook fires (yes, my own webhook), I email you within 1 hour with the intake brief: framework, host, repo access, Stripe webhook secret, Resend API key, your tier copy. 24 hours later you have a working pipeline with a verified live test charge.