webhook-security

Implements secure webhook handling with SHA-256 HMAC verification and replay protection.

783|62|Updated Jan 19, 2026

Search Tags:#security #api #verification #webhooks #idempotency #integrations

Ready to run

npx skills add https://github.com/dadbodgeoff/drift --skill webhook-security-dadbodgeoff

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: webhook-security
Source: https://github.com/dadbodgeoff/drift/tree/main/drift%20v1%20depreciated/skills/webhook-security
Command: npx skills add https://github.com/dadbodgeoff/drift --skill webhook-security-dadbodgeoff

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill provides robust security measures for handling incoming webhooks, protecting your application from malicious or malformed requests.

Core Features & Use Cases

Signature Verification: Ensures the webhook request genuinely originates from the expected source using HMAC-SHA256.
Replay Protection: Validates timestamps to prevent old requests from being processed multiple times.
Idempotency: Guarantees that a specific webhook event is processed only once, even if received multiple times.
Use Case: Securely receive payment notifications from Stripe, code push events from GitHub, or SMS delivery reports from Twilio.

Quick Start

Use the webhook-security skill to verify an incoming webhook request using the provided secret and signature.

Frequently Asked Questions about webhook-security

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I verify webhook signatures for Stripe or GitHub integrations?▼

Webhook signature verification uses HMAC-SHA256 cryptography to authenticate incoming requests from services like Stripe or GitHub. This prevents malicious or forged webhook deliveries from triggering unauthorized actions.

What's the best way to prevent replay attacks on incoming webhooks?▼

Replay protection validates request timestamps to ensure old webhook payloads cannot be resubmitted and processed multiple times. This mechanism rejects expired requests outside an acceptable time window.

How do I implement idempotency for webhook integrations?▼

Idempotency guarantees a specific webhook event is processed only once, even if received multiple times. It tracks unique event identifiers using libraries like ioredis to prevent duplicate processing.

Can I use this webhook security approach with Python FastAPI and TypeScript?▼

Yes, webhook verification implementations support both TypeScript/JavaScript and Python environments. Code examples demonstrate integration with FastAPI and crypto libraries for secure handling.

Why do I need timestamp validation for third-party API webhooks?▼

Timestamp validation prevents replay attacks by checking if webhook requests fall within an acceptable time window. Without it, intercepted requests from services like Twilio could be maliciously resent.