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repo-preflight

repo-preflight is a skill for Claude Code from nauta-ai/holster. It costs 54 tokens per session (345 once invoked), scanned C, original, MIT.

A repository safety check that looks for exposed secrets, risky agent connections, and missing protections in .gitignore before code or configuration is run, committed, or shared.

In plain words
What is it for?
Use it before handing a repository to an AI agent, committing it, or sharing an MCP configuration; it reports separate run and share safety verdicts and an ordered fix list.
Why use it?
It helps catch API keys, credential files, unpinned commands, and overly broad environment access before they become security or sharing problems.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the holster plugin — 1 skill shipped together

not rated 0repo 5mo ago C scan 54 tokens original MIT

Good fit Use it before handing a repository to an AI agent, committing it, or sharing an MCP configuration; it reports separate run and share safety verdicts and an ordered fix list.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nauta-ai/holster/repo-preflight
View source ↗ nauta-ai/holster nautaai.com
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add nauta-ai/holster --skill repo-preflight
Clone the repo
git clone --depth 1 https://github.com/nauta-ai/holster

Made for: Claude Code.

Or install holster, the plugin that ships this one along with the rest of its 1 skill.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for repo-preflight

README.md
[![agentmods](https://agentmods.dev/badge/skills/nauta-ai/holster/repo-preflight/github.svg)](https://agentmods.dev/skills/nauta-ai/holster/repo-preflight)
Your own site
<a href="https://agentmods.dev/skills/nauta-ai/holster/repo-preflight"><img src="https://agentmods.dev/badge/skills/nauta-ai/holster/repo-preflight/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for repo-preflight

Your own site · 80×15
<a href="https://agentmods.dev/skills/nauta-ai/holster/repo-preflight"><img src="https://agentmods.dev/badge/skills/nauta-ai/holster/repo-preflight.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 345 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00054 $0.00345
Opus 5.5 $0.00022 $0.00138
Sonnet 5.5 $0.00011 $0.00069
Haiku 4.5 $0.00005 $0.00034

Measured 2mo ago against content hash fb13e4cca910, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

repo-preflight scanned grade C with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Reaches for credential fileshighPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

- credential files (`.env`, `*.pem`, `.aws/credentials`, …) **not** covered by `.gitignore`.
plugins/holster/skills/repo-preflight/SKILL.md · 16 lines

What it actually says

Before the user hands this repository (or an MCP config) to an AI agent, commits it, or shares it with anyone, run a Holster preflight and report back.

  1. Call the holster.guard tool with the absolute path to the repo. It returns a RUN verdict (safe to run an agent on this locally?) and a SHARE verdict (safe to commit/share this?), plus a ranked fix order.
  2. If either verdict is RISKY, stop and surface the findings plainly before the user proceeds — especially:
    • live API keys / secrets sitting in source,
    • MCP servers configured to run unpinned code (e.g. npx/uvx with no pinned version) or that inherit the full shell environment,
    • credential files (.env, *.pem, .aws/credentials, …) not covered by .gitignore. Then walk the user through the fix order, top item first.
  3. For a deeper pass: holster.scan_repo (secret scan), holster.check_gitignore (gitignore audit), holster.rotation_playbook (provider-specific rotation steps).

Holster runs entirely locally — the repo never leaves the machine. Never print raw secret values; refer to findings by type and location (file:line) only.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 16 lines · 54 tokens per session scan C fb13e4cca910

Subscribe to this mod's changes

repo-preflight is a skill published in the GitHub repository nauta-ai/holster (0 stars, last pushed 5mo ago), licensed MIT. It adds 54 tokens to every session and 345 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it C with 1 finding (reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Claude CodeSecurityai-agentscodexcursorholsterlocal-first
Related

repo-preflight compared with skills from other repositories

repo-preflight next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
repo-preflightnauta-ai/holsterSkill05mo agoMITC54Claude Code
onboardPerpetualSoftware/padSkill203yesterdayApache-2.0A11Claude Code
padPerpetualSoftware/padSkill203yesterdayApache-2.0A59Claude Code, Codex
connectPerpetualSoftware/padSkill203yesterdayApache-2.0A27Claude Code
statusPerpetualSoftware/padSkill203yesterdayApache-2.0A13Claude Code
capturePerpetualSoftware/padSkill203yesterdayApache-2.0A10Claude Code
disconnectPerpetualSoftware/padSkill203yesterdayApache-2.0A18Claude Code