_setup-2fa-admin

_setup-2fa-admin is a skill for Claude Code from flavien-ia/hypervibe-harness. It costs 99 tokens per session (1,684 once invoked), scanned A, original, Apache-2.0.

An internal setup for protecting a single administrator login with two-factor authentication. This means signing in requires both a password and a temporary code from an authenticator app.

In plain words
What is it for?
Use it when a project has one fixed admin account that must be secured with two-factor authentication.
Why use it?
It adds protection if the administrator's password is stolen. It also sets up trusted-device access, automatic logout after inactivity, and backup sign-in codes.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions Codex.

Part of the hypervibe plugin — 86 skills, 1 hook, 1 MCP server shipped together

Good fit Use it when a project has one fixed admin account that must…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/flavien-ia/hypervibe-harness/_setup-2fa-admin
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 _setup-2fa-admin
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 86 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 _setup-2fa-admin

README.md
[![agentmods](https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_setup-2fa-admin.svg)](https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_setup-2fa-admin)
Your own site
<a href="https://agentmods.dev/skills/flavien-ia/hypervibe-harness/_setup-2fa-admin"><img src="https://agentmods.dev/badge/skills/flavien-ia/hypervibe-harness/_setup-2fa-admin.svg" alt="Measured on agentmods" height="20"></a>
Per session 99 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,684 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.
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 $0.00099 $0.01684
Opus 5 $0.00049 $0.00842
Sonnet 5 $0.00020 $0.00337
Haiku 4.5 $0.00010 $0.00168

Measured 7d ago against content hash 29d82773a732, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

_setup-2fa-admin 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 7d 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/_setup-2fa-admin/SKILL.md · 104 lines

How it starts

The opening of the file, as written. The whole thing — 104 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Setup 2FA - Admin mode

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).

Sets up 2FA on a hypervibe admin login. The deterministic core (install, generation of the secret + codes, writing the code, vault storage, env push) lives in scripts/setup-2fa.mjs. This skill handles the pre-flight (vault), the invocation, mounting the auto-logout, and the summary.

Input variables (passed by add-2fa): PROJECT_NAME, WEB_DIR, AUTH_APP.


Step 1 - Vault pre-flight

The 2FA secret + the codes are stored in the Bitwarden vault. Make sure it is unlocked (the _ensure-vault pattern):

node "${CLAUDE_SKILL_DIR}/../../scripts/vault/vault.mjs" status
  • unlocked -> continue.
  • locked / expired -> warn the user ("vault is locked, a window will open for your master password"), then:
    node "${CLAUDE_SKILL_DIR}/../../scripts/vault/launch.mjs" unlock --lang <LANG>
    
    (blocking, the user enters their master pwd, auto-closes on success). Then continue.
  • Vault not installed -> delegate to _add-keyring, then continue.

Read the full file on GitHub · 104 lines

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. 7d ago First seen · 104 lines · 99 tokens per session scan A 29d82773a732

Subscribe to this mod's changes

_setup-2fa-admin is a skill published in the GitHub repository flavien-ia/hypervibe-harness (37 stars, last pushed yesterday), licensed Apache-2.0. It adds 99 tokens to every session and 1,684 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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