Every webhook provider has a different signature algorithm and header format and you end up rewriting the same verification boilerplate for each one. Tern absorbs that pain.

Zero-dependency TypeScript SDK. Handles signature verification for Stripe, Polar, Clerk, Shopify, Sentry, Grafana and 15+ more. Works with Express, Next.js and Cloudflare Workers.

Also now Tern opens source supports complete inbound webhook event reliability layer including Queuing, retries, deduplication, replay, dead letter queue and Slack/Discord alerting — all opt-in,