Webhook Signature Verifier

Verify webhook signatures for Stripe, GitHub, and Slack. Input payload, secret, and signature to verify HMAC

Webhook Provider

Hash Algorithm

Webhook Payload (request body)

Signing Secret

Received Signature (from header)

1. The provider sends a webhook with a payload and a signature header

2. The signature is an HMAC hash of the payload using your shared secret

3. You compute the same HMAC on your end and compare

4. If they match, the webhook is authentic and untampered

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