Nuxt / Nitro / h3

server/api/webhooks/stripe.post.ts

import { createWebhookHandler } from 'verihook/h3';

export default defineEventHandler(
  createWebhookHandler('stripe', process.env.STRIPE_WEBHOOK_SECRET!, async (payload, result, event) => {
    // result.event is a StripeEvent; event is the h3 event
  }),
);

Works with h3 v1 (Nuxt 3) and h3 v2. readBody(event) still works inside the handler. With runtimeConfig, pass a function: (event) => useRuntimeConfig(event).stripeWebhookSecret.

onError(result, event) returns your own Response for failures.

What the adapter does

Situation	Response
Invalid, missing or expired signature	401 { error, code }, unless you pass onError
Duplicate event (with dedupeStore)	200 { received: true, duplicate: true }
Body over maxBodySize (default 2 MB)	413 { code: "PAYLOAD_TOO_LARGE" }
Exception during verification	500 with a generic message
Your handler throws or responds >= 500	The dedupe key is released so the retry is processed

All verification options (tolerance, dedupeStore, url, …) can be passed as the last argument. Pick your provider in Providers for the secret and the headers it sends.