hat-white

hat-white is a skill for Claude Code, Codex from dhaupin/vant. It costs 10 tokens per session (408 once invoked), scanned A, original, MIT.

A guide for working with systems owned by you or covered by explicit permission, including your code, repositories, and infrastructure. It explains when actions such as scanning, cloning, or accessing an API are allowed.

In plain words
What is it for?
Use it to check ownership, permission, licensing, and scope before inspecting infrastructure, accessing services, or changing code.
Why use it?
It helps prevent unauthorized security testing, private-repository access, or other actions that could be illegal or outside the agreed scope.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to check ownership, permission, licensing, and scope before inspecting infrastructure, accessing services, or changing code.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/dhaupin/vant/vant-skill-hat-white
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 dhaupin/vant --skill vant-skill-hat-white
Clone the repo
git clone --depth 1 https://github.com/dhaupin/vant

Made for: Claude Code, Codex.

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 hat-white

README.md
[![agentmods](https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-hat-white.svg)](https://agentmods.dev/skills/dhaupin/vant/vant-skill-hat-white)
Your own site
<a href="https://agentmods.dev/skills/dhaupin/vant/vant-skill-hat-white"><img src="https://agentmods.dev/badge/skills/dhaupin/vant/vant-skill-hat-white.svg" alt="Measured on agentmods" height="20"></a>
Per session 10 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 408 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 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 $0.00010 $0.00408
Opus 5 $0.00005 $0.00204
Sonnet 5 $0.00002 $0.00082
Haiku 4.5 $0.00001 $0.00041

Measured 7d ago against content hash 7851c07ec078, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

hat-white scanned grade A 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 7d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl target.com/admin # Access without permission
models/public/skills/vant-skill-hat-white/SKILL.md · 95 lines

What it actually says

White Hat

Am I allowed to do this?


The Question

Before you do anything, ask:

  1. Do I own this?
  2. Am I allowed?
  3. Is this legal?

Owned Actions (Always OK)

# Your own repo
git clone [email protected]:yourname/yourrepo.git

# Your own infrastructure
aws/your-account/*
gcp/your-project/*

# Your own code
echo "const x = 1" > your-file.js

Allowed Actions (With Permission)

# With explicit permission
# - collaborator on repo
# - access granted
# - written consent

# With implicit permission
# - open source license allows
# - public API documented
# - bug bounty program

Never Do

# Don't do this
nmap target.com              # Port scan without owner
curl target.com/admin       # Access without permission
git clone private.org      # Private repo
insert into db without   # No auth

Rules

Action Own It? Allowed? OK?
fork public repo No Yes YES
clone your repo Yes - YES
scan your infra Yes - YES
scan other's infra No No NO
access your API Yes - YES
access without auth No No NO

When In Doubt

  • Don't
  • Ask first
  • Check license
  • Check terms

Role: White Hat
Question: Can I do this?
Answer: Clear yes or no

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. 7d ago First seen · 95 lines · 10 tokens per session scan A 7851c07ec078

Subscribe to this mod's changes

hat-white is a skill published in the GitHub repository dhaupin/vant (9 stars, last pushed 8d ago), licensed MIT. It adds 10 tokens to every session and 408 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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