Webhook Payload Generator (Stripe, GitHub, Slack)

Building a webhook receiver? Stop hunting for example payloads in vendor docs. This generator builds realistic test payloads for popular webhook providers, with optional HMAC signatures matching the real format. Use as fixture data for unit tests or to manually post to your local dev server.

How to use the Webhook Payload Generator (Stripe, GitHub, Slack)

Pick a provider + event. Set a signing secret. Click Generate. The output includes the payload body and the matching Stripe-Signature / X-Hub-Signature-256 / X-Slack-Signature header value, plus a ready-to-paste cURL command.