# Preflight

> Load to run, tune, or debug preflight.

- Skill: `vanillagreencom/preflight` (Agent Skill, multi-file: 15 files)
- Install (CLI): `npx skillmds@latest add vanillagreencom/preflight`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vanillagreencom/preflight/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: MIT
- Author: vanillagreencom (https://skillmd.com/u/vanillagreencom)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/vanillagreencom/preflight

---


# Preflight

Run preflight in the validate step, before the project's own validation command.

```bash
.agents/skills/preflight/scripts/preflight              # vs the default branch's merge base
.agents/skills/preflight/scripts/preflight --staged     # staged changes (pre-commit)
.agents/skills/preflight/scripts/preflight --all        # every tracked file, every line
```

Fix what a finding reports; never widen a lane's exclusions to clear it.

Lanes, scopes, settings, output and exit codes are in `preflight --help`. Diff construction and the `unwired-suite`, `data-syntax` and `applied-migration-edited` glob grammars are [references/lanes.md](references/lanes.md). Hook and CI wiring is [README.md](README.md) § Wiring.