preflight-check

Diagnose missing binaries, environment variables, and service connections before skill execution.

Updated Feb 18, 2026

Search Tags:#validation #environment #connectivity #prerequisites #preflight #env-vars #binaries

Ready to run

npx skills add https://github.com/guifav/openclaw-skills --skill preflight-check-guifav

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: preflight-check
Source: https://github.com/guifav/openclaw-skills/tree/main/preflight-check
Command: npx skills add https://github.com/guifav/openclaw-skills --skill preflight-check-guifav

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Preflight-check validates that all required binaries, environment variables, and services are present and correctly configured before any skill runs, reducing runtime errors and deployment delays.

Core Features & Use Cases

Validate essential binaries and CLI tools across stacks (node, git, gh, gcloud, curl, etc.).
Verify environment variables and service connectivity, with clear remediation guidance.
Generate structured preflight reports (JSON + human-readable) to inform go/no-go decisions.

Quick Start

Run the preflight-check to verify your current environment against the selected target stack and generate a report.

Frequently Asked Questions about preflight-check

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

FAQPage Schema

How do I verify environment variables and binaries before running a deployment?▼

Preflight checks diagnose missing binaries, unset environment variables, and failed service connections before running a deployment, returning a structured report with remediation guidance.

Can I check service connectivity for Vercel and Supabase before executing a skill?▼

Yes, preflight checks validate service connectivity across Vercel, Supabase, and GCP stacks, executing commands to ensure required services are reachable and correctly configured before execution.

What is a preflight check and when do I need it for my stack?▼

A preflight check validates that required binaries, environment variables, and services are present and configured correctly, reducing runtime errors and deployment delays across full-stack environments.

How do I generate a machine-readable JSON report for missing prerequisites?▼

Run a preflight check to enumerate required binaries and environment variables, executing commands to test connectivity and returning both machine-readable JSON and a human-readable summary.

Does the preflight check work with GCP and full-stack environments?▼

Yes, preflight checks work across Vercel, Supabase, GCP, and full-stack environments, validating essential binaries like node, git, gh, gcloud, and curl before any skill runs.