check-env

Validate required environment variables for presence and formatting.

2|Updated Apr 11, 2026
One-click install
npx skills add https://github.com/PlazaCC/antes-da-tela --skill check-env-plazacc
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: check-env
Source: https://github.com/PlazaCC/antes-da-tela/tree/main/.agents/skills/check-env
Command: npx skills add https://github.com/PlazaCC/antes-da-tela --skill check-env-plazacc

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Verifies that all required environment variables are present and correctly formatted, preventing runtime errors during setup, debugging, or deployment.

Core Features & Use Cases

  • Ensures mandatory keys (e.g., NEXT_PUBLIC_SUPABASE_URL, DATABASE_URL, RESEND_API_KEY) are configured with non-empty values.
  • Validates basic formatting rules (URL schemes, token prefixes) and provides guidance when a variable is missing or malformed.
  • Useful in local development, CI pipelines, and pre-deployment checks to surface configuration gaps early.

Quick Start

Validate that your environment is properly configured by checking all required variables before starting the application.

Frequently Asked Questions about check-env

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I verify required environment variables are present before deployment?

To verify required environment variables before deployment, check that mandatory keys like NEXT_PUBLIC_SUPABASE_URL and DATABASE_URL are configured with non-empty values and correct formatting patterns to prevent runtime errors.

Why does my application fail to connect when environment variables are malformed?

Applications fail when environment variables are malformed because connection strings like DATABASE_URL lack valid URL schemes or required prefixes. Validating formatting rules early surfaces these configuration gaps during setup or debugging.

Can I validate environment variable formatting in a CI pipeline?

Yes, you can validate environment variable formatting in CI pipelines by checking that keys such as RESEND_API_KEY enforce presence, non-emptiness, and basic formatting patterns to surface configuration gaps before deployment.

What is the best way to check for missing env vars during local development?

The best way to check for missing env vars during local development is to validate required environment variables for presence and non-emptiness, which reports missing variables with guidance on where to locate them.

Does environment variable validation work with Supabase and Resend API keys?

Yes, environment variable validation works with Supabase and Resend API keys. It validates that NEXT_PUBLIC_SUPABASE_URL and RESEND_API_KEY are present, non-empty, and correctly formatted with proper URL schemes and token prefixes.