DEVOPS
Block PR merge when the Vercel preview fails smoke tests
When a Vercel preview deployment finishes, runs an HTTP smoke suite against the ephemeral URL and sets a GitHub commit status that blocks merge if any check fails.
How it runs
The automated pipeline, trigger to output.
- TriggerVercel preview deployment readyVercel
- LogicKeep only successful preview builds
- ActionRun HTTP smoke checks against preview URLHTTP webhook
- LogicEvaluate pass/fail from responses
- OutputPost commit status to gate mergeGitHub
What it does
Turns every Vercel preview deployment into a hard merge gate. As soon as a preview is ready, it hits the live ephemeral URL with a battery of smoke checks (homepage 200, health endpoint, a critical API route) and reports the verdict back to the pull request as a required commit status. A broken preview can no longer be merged.
When to use it
Use it when your team merges to a trunk that auto-deploys to production and you want a real, running-environment check — not just unit tests — to stand between a bad preview and main. Pair it with a GitHub branch protection rule that requires the `preview-smoke` status.
How it works
- 1Vercel fires a deployment webhook when the preview reaches the ready state.
- 2A filter keeps only `preview` targets that succeeded, discarding production and errored builds.
- 3An HTTP step calls the preview URL's smoke endpoints and collects status codes and latencies.
- 4A logic branch decides pass or fail based on the responses.
- 5A GitHub commit status is posted (`success` or `failure`) against the PR's head SHA, gating the merge button.
Set it up
What you configure once, before turning it on.
- 1Connect VercelDeploys, runtime logs, analytics.
- 2Connect HTTP webhookTrigger any URL on agent actions.
- 3Connect GitHubRepos, issues, pull requests, actions.
- 4Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 5Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 6Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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