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harden

harden is a skill for Codex from carlassmann/dotfiles. It costs 54 tokens per session (234 once invoked), scanned A, original, no licence file.

A process for turning a proven prototype into a durable implementation that is maintainable, tested, and ready for production use.

In plain words
What is it for?
Use it after an exploration to improve code quality, add tests, and prepare the implementation for production.
Why use it?
It separates learning whether an idea works from the work needed to make the resulting code reliable.

Skill for Codex

Written for Codex: agents/openai.yaml present.

not rated 2repo changed 1mo ago A scan 54 tokens no licence

Good fit Use it after an exploration to improve code quality, add tests, and prepare the implementation for production.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/carlassmann/dotfiles/harden
View source ↗ carlassmann/dotfiles
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 carlassmann/dotfiles --skill harden
Clone the repo
git clone --depth 1 https://github.com/carlassmann/dotfiles

Made for: 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 harden

README.md
[![agentmods](https://agentmods.dev/badge/skills/carlassmann/dotfiles/harden/github.svg)](https://agentmods.dev/skills/carlassmann/dotfiles/harden)
Your own site
<a href="https://agentmods.dev/skills/carlassmann/dotfiles/harden"><img src="https://agentmods.dev/badge/skills/carlassmann/dotfiles/harden/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 harden

Your own site · 80×15
<a href="https://agentmods.dev/skills/carlassmann/dotfiles/harden"><img src="https://agentmods.dev/badge/skills/carlassmann/dotfiles/harden.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 234 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00234
Opus 5.5 $0.00022 $0.00094
Sonnet 5.5 $0.00011 $0.00047
Haiku 4.5 $0.00005 $0.00023

Measured 1mo ago against content hash 9a4fae9a15f2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

harden scanned grade A with 0 findings 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 1mo 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

agents/skills/harden/SKILL.md · 22 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 1mo ago Changed · +20 tokens per session 9a4fae9a15f2
  2. 1mo ago First seen · 22 lines · 34 tokens per session scan A 2c7c13d71201

Subscribe to this mod's changes

harden is a skill published in the GitHub repository carlassmann/dotfiles (2 stars, last pushed yesterday), with no licence file. It adds 54 tokens to every session and 234 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-12.

PlanningTesting
Related

harden compared with skills from other repositories

harden next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
hardencarlassmann/dotfilesSkill2yesterdaynoneA54Codex
imagegenopenai/codexSkill134ktodayApache-2.0A113Codex
local-ai-agentsmicrosoft/ai-agents-for-beginnersSkill79ktodayMITA200Claude Code, Codex
playwright-climicrosoft/playwrightSkill99ktodayApache-2.0A19Claude Code
systematic-debuggingobra/superpowersSkill314k3d agoMITA21Claude Code
next-cache-components-adoptionvercel/next.jsSkill143ktodayMITA95Claude Code
chat-pet-sprite-creationmicrosoft/vscodeSkill195ktodayMITA53Claude Code, Codex