Vp Env Secrets

Env Secrets

Handle .env* files with local-first precedence and minimal value exposure. Use dotenvx for one-shot command injection, not for printing secret values.

Scope

This skill exists to help agents operate .env* files safely:

• discover candidate env files without printing values
• recommend the right target file from local evidence and user intent
• resolve dotenvx load order with local-first final precedence
• stage and persist one-line sensitive values without chat exposure
• run commands with selected env files while blocking risky defaults

It does not manage non-.env credential stores, password managers, shell profiles, or production secret managers.

Core Rules

1. Never expose values - Do not print raw secret values, use dotenvx get,

run dotenvx get --all, or use dotenvx --debug.

1. Do not ask for secrets in chat - Use a restrictive tmp file or editor

handoff. Stage from that file, then delete the input file.

1. List before writing - Inspect candidate files by path, class, git status,

permissions, key names/counts, and risk flags before recommending a target.

1. Local-first means final precedence - Keep local files higher priority

than base files, and project files higher priority than home files.

Use the bundled scripts/envctl helper when available. It is designed to avoid printing values.

Tool Check

Before run, verify-staged, or persist-staged, confirm dotenvx is available:

scripts/envctl doctor

If missing, tell the user dotenvx is required and offer a small set of install options such as mise, brew, or npm/npx, following the local toolchain. Do not install it without confirmation.

File Scope

Supported env files:

• /.env
• /.env.*
• ~/.env
• ~/.env.*

Special cases:

• .env.example, .env.sample, .env.template, and similar templates are not

secret files by default and may be read or edited when they contain placeholders.

• .env.keys contains dotenvx private keys. Do not load it as an application

env file and do not print its contents.

• Production-like files such as .env.production and .env.staging are

explicit-only targets.

Recommended Targets

Use local evidence, not a fixed rule:

| Use case | Recommended target | | --- | --- | | Personal/global agent secret | ~/.env.local | | Project-local secret | /.env.local, only if ignored or otherwise safe | | Shared non-secret defaults | /.env if the repo convention supports it | | Production/staging secret | Only the explicitly selected .env.production* or .env.staging* |

Do not write secrets to tracked files, unignored project files, templates, or .env.keys.

Listing Workflow

Run a safe list before choosing:

scripts/envctl list --cwd "$PWD" --home "$HOME" --keys

Review:

• scope: cwd or home
• class: local-secret, base-env, env-variant, production-like,

template, or dotenvx-keys

• git: tracked/ignored/not-ignored for project files
• perms: file permissions
• keys: names only, never values
• risks: command substitution, duplicate keys, broad permissions,

production explicit-only, dotenvx keys

If a file contains $() or backtick command substitution, treat it as high risk. Do not run it unless the user explicitly accepts that command substitution will execute.

Precedence

Define precedence as final priority, not raw CLI order.

Default final priority:

/.env.local
/.env
~/.env.local
~/.env

For an environment name such as development:

/.env.development.local
/.env.local
/.env.development
/.env
~/.env.development.local
~/.env.local
~/.env.development
~/.env

dotenvx behavior:

• Without --overload, existing process env wins, and the first -f wins

among env files. Put high-priority files first.

• With --overload, later sources win and env files can override process env.

Reverse the CLI order to preserve the same local-first final priority.

Prefer no --overload by default. Use --overload only when the user explicitly wants env files to override the current process environment.

Show the resolved order before running commands:

scripts/envctl order --cwd "$PWD" --home "$HOME"
scripts/envctl order --cwd "$PWD" --home "$HOME" --env development
scripts/envctl order --cwd "$PWD" --home "$HOME" --env development --overload

Run commands through dotenvx:

scripts/envctl run --cwd "$PWD" --home "$HOME" -- command arg
scripts/envctl run --cwd "$PWD" --home "$HOME" --env development -- command arg

Add --allow-command-substitution only after explicit user confirmation.

Staging And Persisting

When a secret must be supplied by the user:

1. Create a restrictive tmp input file.
2. Ask the user to edit the tmp file locally.
3. Stage from that file; do not pass the value as a command argument.
4. Verify only presence and length.
5. Persist to the recommended target after confirmation.
6. Delete staging/input files.

Helper flow:

(umask 077; mkdir -p "${TMPDIR:-/tmp}/vp-env-secrets")
input="${TMPDIR:-/tmp}/vp-env-secrets/KEY.input"
printf '# Put KEY below this line, then save and close.\n' > "$input"
zed "$input"

scripts/envctl stage-from-file KEY "$input"
scripts/envctl verify-staged KEY
scripts/envctl persist-staged KEY --target "$HOME/.env.local" --mode append
scripts/envctl clean

persist-staged refuses Git-tracked or not-ignored project targets by default. Use its unsafe override only after explicit user confirmation.

Conflict options:

| Option | Behavior | | --- | --- | | append | Append only if the key is absent | | override | Comment matching old lines and append the staged value | | replace | Replace matching lines in place; use only after explicit confirmation |

First version supports one-line values. If a secret is multiline, pause and choose a verified formatter before persisting.

Prohibited

• dotenvx get KEY, dotenvx get --all, dotenvx get --format shell, or any

command that prints secret values.

• dotenvx run --debug or shell debug modes such as set -x and bash -x.
• Unfiltered env, printenv, export -p, or declare -p.
• Passing raw secret values in command arguments, logs, commits, PR text, or

reusable artifacts.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: VdustR
• Source: VdustR/skills
• License: MIT

Install and usage instructions live in the source repository linked above.