env-file-auditor SKILL.md skillA

env-file-auditor from lethe044/agentskill-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add lethe044/agentskill-kit/env-file-auditor@v1.0.0

Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
lethe044/agentskill-kit
Path
skills/env-file-auditor/SKILL.md
Versions recorded
1
Latest version
v1.0.0, committed Oct 26, 2026
Size
1,747 bytes
Repository stars
48
License
MIT

Compares a .env file with its .env.example template and reports missing keys, undocumented extra keys, empty values and example files that contain real looking secrets. Use when the user asks why an app fails on startup with missing configuration, or wants to check environment files before committing.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Env file auditor

Keeps `.env` and `.env.example` in step and stops secrets from leaking into the example file.

## When to use

- An app crashes with "missing environment variable" and the user is not sure which one.
- Before committing, to make sure `.env.example` has no real credentials.
- After adding configuration, to check that the template documents every key.

## How to run

```bash
python scripts/audit_env.py .env .env.example
```

The first argument is the real file, the second is the template.

## Output

JSON with:

- `missing`: keys in the template that the real file does not define.
- `extra`: keys in the real file that the template does not document.
- `empty`: keys that are defined but have no value in the real file.
- `suspicious_example_keys`: keys in the template whose value looks like a real secret (long, mixed characters, on a name that contains KEY, SECRET, TOKEN or PASSWORD).

The exit code is 1 when anything is reported. Values are never printed, only key names.

## After running

Fix `suspicious_example_keys` first: replace the value with a placeholder such as `changeme`, and rotate the
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add lethe044/agentskill-kit/env-file-auditor@sha256:4d4c9e3b591127e2

The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_ok3u4sd6vxmq77jv.svg)](https://markdownregistry.com/a/art_ok3u4sd6vxmq77jv)

3 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 26, 2026.

versioncommittedcommitsizeaudit
v1.0.0 latest2026-10-26 6eb8fc4 1,747 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (1747 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

lethe044/agentskill-kit · 48 stars · license MIT · pushed 2026-10-26 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_ok3u4sd6vxmq77jv
GET https://markdownregistry.com/api/v1/resolve?ref=lethe044/agentskill-kit/env-file-auditor
GET https://markdownregistry.com/api/v1/blob/4d4c9e3b591127e2d608adc55f16cd3d2ba9c708b485c2298c2541ba5c059413

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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