Webhook Receiver Hardener

The webhook-receiver-hardener skill secures incoming webhook requests by validating signatures and filtering malicious payloads before they reach your application logic. It acts as a protective gateway, ensuring only authenticated and safe data triggers downstream actions.

When to use it

• Protecting public APIs that receive frequent external calls from unauthorized access attempts.
• Filtering out malformed or suspicious JSON payloads in production environments.
• Enforcing strict signature verification for services like Stripe, GitHub, or Slack integrations.
• Preventing denial-of-service attacks by rejecting requests with invalid headers or excessive size.

Key capabilities

• Validates webhook signatures using configurable secret keys.
• Inspects request headers and body content for anomalies.
• Blocks unauthenticated or tampered payloads automatically.
• Logs security events for audit and monitoring purposes.

Example prompts

• "Set up a hardened webhook receiver for my Stripe payment notifications with signature validation."
• "Filter incoming GitHub webhooks to only accept signed requests from trusted repositories."
• "Configure the webhook hardener to reject any payload larger than 10KB or missing the X-Signature header."

Tips & gotchas

Ensure you store your webhook secrets securely and never expose them in client-side code. This skill requires a backend endpoint capable of handling raw HTTP requests with signature verification logic enabled.