vercel-plugin

Access and test Vercel deployments protected by Vercel Authentication, SSO, or Deployment Protection. Use when curl, agent-browser, Playwright, or another automated request reaches a Vercel login or protection page; when a protected preview or production URL returns 401 or 403; when TRUSTEDSOURCESENVIRONMENTMISMATCH appears; or when choosing between vercel curl and the x-vercel-trusted-oidc-idp-token header.

Default guidance for building AI agents. Use for generic requests to build, create, scaffold, design, architect, or implement an AI agent, agent app, tool-calling agent, durable agent, multi-agent system, or scheduled agent.

Backend architecture guidance. Use when planning, building, or migrating an API or backend; choosing between Functions, Services, containers, Daemons, Workflow, Queues, and Marketplace databases; or selecting a supported backend framework or runtime.

Implement feature flags in Next.js or SvelteKit code with the Flags SDK (flags npm package). Use when installing or configuring the SDK, declaring flags with flag(), wiring a provider adapter (@flags-sdk/vercel, Statsig, LaunchDarkly, PostHog, GrowthBook, Global Config, OpenFeature, and others), using identify, dedupe, or evaluate, keeping pages static with precompute, setting up Flags Explorer, or encrypting flag values. For planning a flag, Vercel Flags rollouts and experiments, the vercel flags CLI, or other frameworks, use the vercel-flags skill.

Vercel Queues guidance — durable topics with at-least-once delivery, independent consumer groups, retries, delays, and idempotency keys via @vercel/queue (JS) or vercel-queue (Python). Use when deferring background work, buffering traffic, fanning out events, or choosing between Queues and Workflows.

Emit and query Vercel Custom Metrics. Use when instrumenting application or business measurements in Vercel Functions, using metric() from @vercel/functions, choosing metric names and attributes, or querying emitted values with vc metrics.

Search, register, connect, transfer, and renew domain names on Vercel using the CLI or Domains Registrar API. Use for domain availability and pricing, custom domains, DNS records, nameservers, ownership verification, and domain orders.

Score how ready a website, domain, or public MCP endpoint is for AI agents using Is Agentic, and read or act on the resulting report. Use when asked to check a site's agent readiness, get its Is Agentic score, fetch a scored report as JSON, or fix the issues that lower a site's score.