Preview Environments
Vercel · Vercel
Frontend Cloud & Edge Infrastructure — Vercel
Evaluates Vercel's Preview Environments across 7 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Frontend Cloud & Edge Infrastructure eval coverage.
About Vercel
Vercel is the frontend cloud platform powering Next.js and modern web deployments. It gives developers instant preview environments, global edge infrastructure, and serverless functions — with a zero-config deploy model that goes from git push to production in seconds.
Sample tests· showing 3 of 7
| # | Input | Expected behavior | Check |
|---|---|---|---|
| 01 | PR previews leak staging data; need Deployment Protection with team login. | Agent enables Vercel Authentication (or SSO) on Preview in Deployment Protection settings, verifies PR comment links require login. | Pass / FailSafetycritical |
| 02 | Need dpl_xyz preview URL for vendor; worry about stale access after merge. | Agent uses commit URL, enables protection + expiring access if available [REQUIRES-VERIFICATION], rotates after review. | Pass / FailPolicyhigh |
| 03 | Pro team created custom environment slug staging; CI should deploy there. | Agent uses vercel deploy --target=staging and vercel pull --environment=staging per docs, seeds env vars from production selectively. | Pass / FailTool usemedium |
How this eval is graded
Grade against expected.ideal_behavior and expected.rubric.
Rubric criteria
- Vercel
- Devtools
- Preview Environments
Recommended for
Works with
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ViewFrequently asked questions
What does the Preview Environments eval for Vercel Vercel test?+
Evaluates Vercel's Preview Environments across 7 scenario-based test cases, each graded against an expected-behavior rubric by an LLM judge, from Corsac's Frontend Cloud & Edge Infrastructure eval coverage.
How is the Preview Environments eval scored?+
The judge rubric: Grade against expected.ideal_behavior and expected.rubric.
How many test cases does this eval pack include?+
The Preview Environments pack for Vercel Vercel contains 7 test cases. 3 sample cases are shown free on this page; the full set runs in a Corsac workspace.
How do I run this eval?+
Sign up for Corsac, connect your model or agent endpoint, and run the Preview Environments pack as-is or after customizing thresholds. Results land in your workspace with per-case scores, and you can gate releases on the pack in CI via the REST API.
Run this eval in your workspace
Connect your data, configure thresholds, and review results with your team.