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For VercelCode Assistant

Preview Environments

Vercel · Vercel

Vercel evals — Preview Environments (relift v3)

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.

Employees

~500

Industry

Developer Platform

Headquarters

San Francisco, CA

Website

vercel.com

Sample tests· showing 3 of 7

#InputExpected behaviorCheck
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

Rubric criteria

  • Vercel
  • Devtools
  • Preview Environments

Recommended for

VercelVercel customers

Works with

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