// use case
Expose your Rails dev server to GitHub for GitHub webhooks
Reserve a stable subdomain
On the lrok free plan you keep one reserved subdomain forever. Pick a name your GitHub dashboard can hold onto — webhook URLs that survive laptop restarts mean fewer dashboard re-pastes.
$ lrok reserve rai-github Reserved https://rai-github.lrok.ioRun your Rails app
Start the dev server on port 3000 (the Rails default).
$ rails sTunnel localhost to the public URL
lrok forwards https://rai-github.lrok.io/webhooks → http://127.0.0.1:3000/webhooks. The flag --hint binds your reserved subdomain to this tunnel.
$ lrok http 3000 --hint rai-github Forwarding https://rai-github.lrok.io -> http://127.0.0.1:3000Paste the URL into GitHub
Repository → Settings → Webhooks → Add webhook. Paste https://rai-github.lrok.io/webhooks as the destination.
Watch deliveries land in the request inspector
Every webhook GitHub sends shows up at lrok.io/dashboard with full body, headers, status, and latency. Re-deliver any request to your Rails handler with one click. GitHub's X-Hub-Signature-256 header is HMAC-SHA-256 over the raw body. The "Recent Deliveries" tab lets you replay any payload — combine it with lrok's built-in inspector for a tight loop.
// why lrok for this
lrok's reserved subdomain is free and lives forever, so your GitHub github webhooks URL never rotates. $9/mo flat for unlimited tunnels — no SSO tax, no enterprise-only signature verification, no bandwidth metering. The request inspector is built in.
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