How to Set Up GitHub Webhooks

GitHub webhooks let you react to events in your repositories — pushes, pull requests, issues, deployments, and more.

Setting Up

1. Go to Settings → Webhooks → Add webhook
2. Set Payload URL to your HookSniff endpoint
3. Choose Content type: application/json
4. Select events: push, pull_request, issues, deployment
5. Save

Verifying GitHub Signatures

GitHub signs payloads with HMAC-SHA1 using your webhook secret. HookSniff verifies this automatically.

Common Use Cases

• **CI/CD** — Trigger builds on push
• **Notifications** — Alert team on PR reviews
• **Automation** — Auto-merge dependabot PRs
• **Analytics** — Track commit frequency

Code Example

func handleGitHubWebhook(w http.ResponseWriter, r *http.Request) {
    event := r.Header.Get("X-GitHub-Event")
    switch event {
    case "push":
        triggerBuild(payload)
    case "pull_request":
        reviewPR(payload)
    }
    w.WriteHeader(200)
}