_push-env-vars

_push-env-vars is a skill for Claude Code from flavien-ia/hypervibe-harness. It costs 95 tokens per session (590 once invoked), scanned A, original, Apache-2.0.

A helper for copying environment variables, which are configuration values used by an application, to a local .env file and to Vercel, the hosting platform, across production, preview, and development environments.

In plain words
What is it for?
Use it when another setup task needs to add environment variables to the project and its Vercel deployments.
Why use it?
It avoids entering the same configuration values separately in local development and each Vercel environment.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions Claude Code; mentions Codex.

Part of the hypervibe plugin — 87 skills, 1 hook, 1 MCP server shipped together

Good fit Use it when another setup task needs to add environment variables to the project and its Vercel deployments.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/flavien-ia/hypervibe-harness/_push-env-vars
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 flavien-ia/hypervibe-harness --skill _push-env-vars
Clone the repo
git clone --depth 1 https://github.com/flavien-ia/hypervibe-harness

Made for: Claude Code.

Or install hypervibe, the plugin that ships this one along with the rest of its 87 skills, 1 hook, 1 MCP server.

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 _push-env-vars

README.md
[![agentmods](https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_push-env-vars/github.svg)](https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_push-env-vars)
Your own site
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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 _push-env-vars

Your own site · 80×15
<a href="https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_push-env-vars"><img src="https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_push-env-vars.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 95 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 590 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Privilege Escalation · line 3
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
How audits are shown
Origin original 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 $0.00095 $0.00590
Opus 5 $0.00048 $0.00295
Sonnet 5 $0.00019 $0.00118
Haiku 4.5 $0.00010 $0.00059

Measured 10d ago against content hash 4763176a52df, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

_push-env-vars 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 10d 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.

skills/_push-env-vars/SKILL.md · 34 lines

What it actually says

Push Env Vars - Internal helper

Communication

  • Detect the user's language from the conversation (the user's own messages, anywhere in the session - not just this invocation: a bare slash command like /bootstrap carries no language signal by itself). If nothing in the conversation gives a signal, fall back to the OS locale (node -e "console.log(Intl.DateTimeFormat().resolvedOptions().locale)") before defaulting to English. ALWAYS reply in that language for every user-facing message: questions, progress, confirmations, summaries, errors - including any example text quoted in this skill, which is illustrative and must be translated, never sent verbatim.
  • Use plain, non-technical business language. Never expose internal script names (*.mjs) or jargon; describe actions in human terms.
  • When generating user-facing content for the scaffolded project (UI labels, emails, copy), write it in the user's language too.
  • Show progress as a short natural-language checklist (in-progress and done states).

Push env vars to the local .env AND to Vercel (production + preview + development). Delegates to a bundled Node script - never reimplement the push logic inline.

Invocation

From the project root (where .vercel/project.json lives), call:

node "${CLAUDE_SKILL_DIR}/../../scripts/push-env-vars.mjs" "KEY1=value1" "KEY2=value2"

Pass each KEY=VALUE as a single shell-quoted argument. The script splits on the first = only, so values containing = are preserved.

Rules

  • Always use this helper (never vercel env add / echo KEY=... >> .env / printf ... | vercel env ... inline).
  • The script handles .env dedup, .gitignore update, the 3 Vercel environments, special characters, and the CLI's preview git-branch quirk (REST API first, CLI fallback).
  • If the script exits non-zero, relay the failure message to the caller - don't retry the push logic yourself.
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. 10d ago First seen · 34 lines · 95 tokens per session scan A 4763176a52df

Subscribe to this mod's changes

_push-env-vars is a skill published in the GitHub repository flavien-ia/hypervibe-harness (37 stars, last pushed today), licensed Apache-2.0. It adds 95 tokens to every session and 590 once invoked, about $0.0005 per session on Opus 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 2026-08-30.

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