varlock

varlock is a skill for Claude Code, Codex from smith-horn/skillsmith. It costs 73 tokens per session (3,461 once invoked), scanned C, original, no licence file.

A tool for managing environment variables, which are configuration values used by programs, while protecting secrets such as API keys and credentials.

In plain words
What is it for?
Handling secrets, API keys, credentials, and .env files safely.
Why use it?
It helps prevent sensitive configuration from appearing in terminals, logs, traces, or the AI's working context.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Handling secrets, API keys, credentials, and .env files safely.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/smith-horn/skillsmith/varlock
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 smith-horn/skillsmith --skill varlock
Clone the repo
git clone --depth 1 https://github.com/smith-horn/skillsmith

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 varlock

README.md
[![agentmods](https://agentmods.dev/badge/skills/smith-horn/skillsmith/varlock/github.svg)](https://agentmods.dev/skills/smith-horn/skillsmith/varlock)
Your own site
<a href="https://agentmods.dev/skills/smith-horn/skillsmith/varlock"><img src="https://agentmods.dev/badge/skills/smith-horn/skillsmith/varlock/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 varlock

Your own site · 80×15
<a href="https://agentmods.dev/skills/smith-horn/skillsmith/varlock"><img src="https://agentmods.dev/badge/skills/smith-horn/skillsmith/varlock.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,461 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. ✓ AI security review Sonnet 5 · 6 Sept 2026 📄 Read the review
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 $0.00073 $0.03461
Opus 5.5 $0.00029 $0.01384
Sonnet 5.5 $0.00015 $0.00692
Haiku 4.5 $0.00007 $0.00346

Measured 1mo ago against content hash 2d9448e5aff4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

varlock 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 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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -sSfL https://varlock.dev/install.sh | sh -s -- --force-no-brew
packages/mcp-server/src/assets/skills/varlock/SKILL.md · 469 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 First seen · 469 lines · 73 tokens per session scan F 2d9448e5aff4

Subscribe to this mod's changes

varlock is a skill published in the GitHub repository smith-horn/skillsmith (77 stars, last pushed today), with no licence file. It adds 73 tokens to every session and 3,461 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it C with 1 finding (downloads and executes remote code). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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