#Webhooks

3 snippets

• JavaScript Tested

  Verify a webhook signature in Node.js

  Validate an HMAC-SHA256 webhook against the raw request body with a constant-time comparison and replay window.

• Python Tested

  Verify a webhook HMAC signature in Python

  Validate a signed webhook body with hmac.compare_digest and a timestamp tolerance.

• PHP Tested

  Verify an HMAC signature in PHP (constant time)

  Check a webhook or signed-request HMAC with hash_hmac and hash_equals to avoid timing attacks.