webhook-receiver-hardener

Installation
SKILL.md

Webhook Receiver Hardener

Build secure, reliable webhook endpoints that handle failures gracefully.

Core Security

Signature Verification: HMAC validation before processing Deduplication: Track processed webhook IDs Idempotency: Safe to process same webhook multiple times Retries: Handle provider retry attempts Rate Limiting: Prevent abuse

Signature Verification

import crypto from "crypto";

export const verifyWebhookSignature = (
  payload: string,
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107
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First Seen
Jan 24, 2026