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Agent skill

Preflight

by vvedantb in vvedantb/eva

Run repo health checks that used to live in husky hooks (typecheck, React Compiler bailouts, design-system drift, lint).

MITAuto-check passedDevelopment

Install Preflight

skills CLI
$ npx skills add vvedantb/eva --skill preflight -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install vvedantb/eva preflight --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/vvedantb/eva.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/preflight .claude/skills/preflight && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
preflight
GitHub stars
101
Token cost
~330 tokens
SKILL.md length
121 words
Files
1
Skills in repo
23
Repo updated
First seen
Licence
MIT

At a glance

Run repo health checks that used to live in husky hooks (typecheck, React Compiler bailouts, design-system drift, lint).

  • Works in 5 steps: Typecheck (web + backend + callback) → React Compiler bailouts → Design-system drift → …
  • The user says preflight
  • SKILL.md covers Steps and Notes
  • Calls pnpm

What it does

Preflight is an agent skill from vvedantb/eva. Run repo health checks that used to live in husky hooks (typecheck, React Compiler bailouts, design-system drift, lint). Use when the user says preflight, /preflight, run checks before push, or asks to typecheck the monorepo occasionally.

Its SKILL.md is about 330 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Linting and formatting, Monorepo tooling and Design systems. It works with React. The repository describes itself as: Orchestrate sandboxed agents that run in the cloud while you work. The licence is MIT.

When your agent uses it

  • The user says preflight
  • Run checks before push
  • Asks to typecheck the monorepo occasionally

Example prompts

  • “/preflight”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Typecheck (web + backend + callback)
  2. React Compiler bailouts
  3. Design-system drift
  4. Lint (whole tree; former lint-staged scope was staged files only)
  5. Commit hygiene (manual — hooks are off)

What it can do on your machine

Read from SKILL.md and the folder at commit a5a4df2. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • pnpm

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use pnpm, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Preflight loads about 330 tokens when it runs. Until then it costs about 62 tokens; SKILL.md has 121 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~62
When it runs · the whole SKILL.md, loaded when a task matches
~330

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from vvedantb/eva at commit a5a4df2, republished under its MIT licence (© vvedantb). 121 words, ~330 tokens.

Download SKILL.mdSave it as .claude/skills/preflight/SKILL.md (or your agent's skills folder).
name
preflight
description
Run repo health checks that used to live in husky hooks (typecheck, React Compiler bailouts, design-system drift, lint). Use when the user says preflight, /preflight, run checks before push, or asks to typecheck the monorepo occasionally.
disable-model-invocation
true

Preflight

On-demand replacement for disabled husky gates. Run from repo root. Fix failures before continuing; do not skip unless the user says so.

Steps

  1. Typecheck (web + backend + callback):
bash
pnpm typecheck
  1. React Compiler bailouts:
bash
pnpm compiler:check
  1. Design-system drift:
bash
pnpm design:check
  1. Lint (whole tree; former lint-staged scope was staged files only):
bash
pnpm lint
  1. Commit hygiene (manual — hooks are off):
    • No Co-authored-by: Cursor / Made-with: Cursor in commit messages
    • No stray lone @ line in the message (PowerShell here-string leak)

Notes

  • Do not run convex codegen as part of preflight (uploads to the linked deployment).
  • Husky hooks under .husky/ are commented out on purpose; re-enable there if you want gates back on every commit/push.
  • Optional format pass on dirty files: ./node_modules/.bin/lint-staged (needs staged files) or Prettier on specific paths.

© vvedantb, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/preflight of vvedantb/eva.

Open the folder on GitHubat commit a5a4df2

Compare with similar skills

Preflight next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Preflight compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Preflight this skillvvedantb/eva101—~330Automated safety check: PassMIT
React Render Types CompositionHorusGoul/eslint-plugin-react-render-types111—~1.1kAutomated safety check: PassMIT
Typescript Tooling MigrationArize-ai/phoenix12k—~2.8kAutomated safety check: PassApache-2.0
Repo Maintenance Nodecommercetools/ui-kit154—~3kAutomated safety check: NotesMIT
Vercel Composition Patternssupabase/supabase111k58 repos~726Automated safety check: PassMIT
Lint Fixgetsentry/sentry46k—~1kAutomated safety check: PassCustom licence

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Works with

Categories

Questions about Preflight

What does Preflight do?

Run repo health checks that used to live in husky hooks (typecheck, React Compiler bailouts, design-system drift, lint). Preflight is an agent skill from vvedantb/eva. Run repo health checks that used to live in husky hooks (typecheck, React Compiler bailouts, design-system drift, lint).

When should I use Preflight?

Preflight fits situations like: the user says preflight; run checks before push; asks to typecheck the monorepo occasionally.

How do I install Preflight in Claude Code?

Run `npx skills add vvedantb/eva --skill preflight -a claude-code`. Or copy the skill folder (.agents/skills/preflight in vvedantb/eva) into .claude/skills/preflight in your project. Claude Code loads it when a task matches its description.

How do I install Preflight in Codex?

Run `npx skills add vvedantb/eva --skill preflight -a codex`. Or copy the skill folder (.agents/skills/preflight in vvedantb/eva) into .agents/skills/preflight in your project. Codex loads it when a task matches its description.

Can I use Preflight in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add vvedantb/eva --skill preflight -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/preflight, .gemini/skills/preflight, .github/skills/preflight and .opencode/skills/preflight in your project.

What does Preflight need to run?

Going by SKILL.md and its folder, Preflight needs the command-line tools its instructions call (pnpm).

Does Preflight access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Preflight safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Preflight use?

Preflight is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Preflight use?

About 330 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Preflight?

Skills that share tags, products or a category with Preflight: React Render Types Composition (HorusGoul/eslint-plugin-react-render-types, 111 stars), Typescript Tooling Migration (Arize-ai/phoenix, 12k stars), Repo Maintenance Node (commercetools/ui-kit, 154 stars) and Vercel Composition Patterns (supabase/supabase, 111k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Preflight?

vvedantb (a GitHub user) maintains it in vvedantb/eva, which has 101 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on October 9, 2026.

Source: vvedantb/eva on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.