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Agent skill

Env Var Auditor

by zhuyansen in zhuyansen/agent-skills-hub

List the environment variables a codebase reads and flag ones missing from the example env file.

MITAuto-check passed

Install Env Var Auditor

skills CLI
$ npx skills add zhuyansen/agent-skills-hub --skill env-var-auditor -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install zhuyansen/agent-skills-hub env-var-auditor --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/zhuyansen/agent-skills-hub.git skills-src && mkdir -p .claude/skills && cp -r skills-src/ops/skillmgr-runs/in/input/library/env-var-auditor .claude/skills/env-var-auditor && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
env-var-auditor
GitHub stars
413
Token cost
~194 tokens
SKILL.md length
117 words
Files
1
Skills in repo
21
Repo updated
First seen
Licence
MIT

At a glance

List the environment variables a codebase reads and flag ones missing from the example env file.

  • Works in 3 steps: Read the input the user points to. If… → Do the task described above, step by… → Show the result, then a short list of…
  • Tasks that involve Secrets management
  • SKILL.md covers When to use, Steps and Notes
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Env Var Auditor is an agent skill from zhuyansen/agent-skills-hub. List the environment variables a codebase reads and flag ones missing from the example env file.

Its SKILL.md is about 190 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

The repository describes itself as: Discover and compare open-source Agent Skills, tools & MCP servers — with quality scoring, trending analysis, and automated GitHub sync. The licence is MIT.

When your agent uses it

  • Tasks that involve Secrets management

Example prompts

  • “/env-var-auditor”

Workflow steps

3 steps, taken from the first numbered list in SKILL.md.

  1. Read the input the user points to. If none is given, ask for the file or text.
  2. Do the task described above, step by step, and keep the user's own wording where it matters.
  3. Show the result, then a short list of what you changed or found, so the user can check it.

What it can do on your machine

Read from SKILL.md and the folder at commit 2862275. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Env Var Auditor loads about 194 tokens when it runs. Until then it costs about 28 tokens; SKILL.md has 117 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~28
When it runs · the whole SKILL.md, loaded when a task matches
~194

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from zhuyansen/agent-skills-hub at commit 2862275, republished under its MIT licence (© zhuyansen). 117 words, ~194 tokens.

Download SKILL.mdSave it as .claude/skills/env-var-auditor/SKILL.md (or your agent's skills folder).
name
env-var-auditor
description
List the environment variables a codebase reads and flag ones missing from the example env file.

Env Var Auditor

List the environment variables a codebase reads and flag ones missing from the example env file.

When to use

Use this skill when the user asks for it by name or describes this task. Do not use it for unrelated work.

Steps

  1. Read the input the user points to. If none is given, ask for the file or text.
  2. Do the task described above, step by step, and keep the user's own wording where it matters.
  3. Show the result, then a short list of what you changed or found, so the user can check it.

Notes

  • Keep changes small and reversible.
  • Say plainly when the input is incomplete instead of guessing.

© zhuyansen, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in ops/skillmgr-runs/in/input/library/env-var-auditor of zhuyansen/agent-skills-hub.

Open the folder on GitHubat commit 2862275

Compare with similar skills

Env Var Auditor next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Env Var Auditor compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Env Var Auditor this skillzhuyansen/agent-skills-hub413—~194Automated safety check: PassMIT
Firecrawl Build Onboardingfirecrawl/firecrawl190k1 repos~1.4kAutomated safety check: NotesISC
Security Auditoreigent-ai/eigent15k—~1.8kAutomated safety check: NotesApache-2.0
Dep Updatestrufflesecurity/trufflehog28k—~1.3kAutomated safety check: PassAGPL-3.0
Iron Proxy Gateway for NanoClawnanocoai/nanoclaw31k—~4.6kAutomated safety check: NotesMIT
BibiJimmyLv/BibiGPT-v16.2k—~885Automated safety check: PassGPL-3.0

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  • Security Auditor

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Questions about Env Var Auditor

What does Env Var Auditor do?

List the environment variables a codebase reads and flag ones missing from the example env file. Env Var Auditor is an agent skill from zhuyansen/agent-skills-hub. List the environment variables a codebase reads and flag ones missing from the example env file.

When should I use Env Var Auditor?

Env Var Auditor fits situations like: tasks that involve Secrets management.

How do I install Env Var Auditor in Claude Code?

Run `npx skills add zhuyansen/agent-skills-hub --skill env-var-auditor -a claude-code`. Or copy the skill folder (ops/skillmgr-runs/in/input/library/env-var-auditor in zhuyansen/agent-skills-hub) into .claude/skills/env-var-auditor in your project. Claude Code loads it when a task matches its description.

How do I install Env Var Auditor in Codex?

Run `npx skills add zhuyansen/agent-skills-hub --skill env-var-auditor -a codex`. Or copy the skill folder (ops/skillmgr-runs/in/input/library/env-var-auditor in zhuyansen/agent-skills-hub) into .agents/skills/env-var-auditor in your project. Codex loads it when a task matches its description.

Can I use Env Var Auditor in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add zhuyansen/agent-skills-hub --skill env-var-auditor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/env-var-auditor, .gemini/skills/env-var-auditor, .github/skills/env-var-auditor and .opencode/skills/env-var-auditor in your project.

What does Env Var Auditor need to run?

SKILL.md names no scripts, command-line tools or credentials: Env Var Auditor is instructions for the agent only.

Does Env Var Auditor access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Env Var Auditor safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Env Var Auditor use?

Env Var Auditor is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Env Var Auditor use?

About 194 tokens (SKILL.md is roughly 776 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Env Var Auditor?

Skills that share tags, products or a category with Env Var Auditor: Firecrawl Build Onboarding (firecrawl/firecrawl, 190k stars), Security Auditor (eigent-ai/eigent, 15k stars), Dep Updates (trufflesecurity/trufflehog, 28k stars) and Iron Proxy Gateway for NanoClaw (nanocoai/nanoclaw, 31k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Env Var Auditor?

zhuyansen (a GitHub user) maintains it in zhuyansen/agent-skills-hub, which has 413 GitHub stars. The repository holds 21 skills in this directory. The repository was last updated on October 10, 2026.

Source: zhuyansen/agent-skills-hub on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.