preflight SKILL.md skillA
preflight from ucsandman/claude-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ucsandman/claude-skills/preflight@git:20260919.5b179a5Pins git:20260919.5b179a5 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ucsandman/claude-skills
- Path
preflight/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260919.5b179a5, committed Sep 19, 2026
- First version recorded
- Aug 14, 2026
- Size
- 5,367 bytes
- Repository stars
- 5
- License
- MIT
Run a product's final prelaunch readiness check; /preflight.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Preflight — the last pass before a repo goes public One run per repo. The pass is **read-only on infra**: it reports platform problems; fixing them (set env var, Stripe config, DNS, deploy) is a CLAUDE.md Hard Stop. Collect every needed infra fix into ONE batched go-ahead list at the end — never apply them mid-pass, never ask one at a time. Two rules that override everything below: - **Env vars are checked by NAME only.** Never pull, print, or diff env VALUES — not in chat, not in a file. Never run `vercel env pull` (it has blanked `.env.local` on this machine twice). - **Invoke the skills; don't reimplement them.** impeccable, polish, and frontend-verify each carry their own protocol. ## 0. Aim at the right project - `git status` first. Note uncommitted work. - offlocal is project-scoped and keeps a "selected" project between sessions. Always: `list_projects` → `select_project` for THIS repo → `get_project_context`. Skipping this audits whatever repo was selected last. - No matching offlocal project? Say so in the report and run local-only checks. …
Read the whole file at its exact version.
How to install
mdr add ucsandman/claude-skills/preflight@sha256:961586d86f7cf88fThe line at the top of this page pins the label git:20260919.5b179a5, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_obysyaumo3s6acpz)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Aug 14, 2026 and Sep 19, 2026, about one every 9 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260919.5b179a5 latest | 2026-09-19 | 5b179a5 | 5,367 B | A | view · diff |
| git:20260905.41afbd2 | 2026-09-05 | 41afbd2 | 4,898 B | A | view · diff |
| git:20260903.3b12a3c | 2026-09-03 | 3b12a3c | 4,960 B | A | view · diff |
| git:20260903.29532be | 2026-09-03 | 29532be | 4,635 B | A | view · diff |
| git:20260814.45259c8 | 2026-08-14 | 45259c8 | 3,893 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (5367 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
ucsandman/claude-skills · 5 stars · license MIT · pushed 2026-09-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_obysyaumo3s6acpz GET https://markdownregistry.com/api/v1/resolve?ref=ucsandman/claude-skills/preflight GET https://markdownregistry.com/api/v1/blob/961586d86f7cf88f31a70410e3626cbd0084f5bb250b62c48f793e9d2b37e8bf
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from ucsandman/claude-skills
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