cloud-os-builder

cloud-os-builder is a skill for Claude Code from naveedharri/benai-skills. It costs 0 tokens per session (12,628 once invoked), scanned B, original, MIT.

A guided setup process for creating a personal knowledge system in a synced cloud folder or Notion workspace. It organizes notes, projects, reference material, daily work, and reusable skills so the system can follow you across devices.

In plain words
What is it for?
Use it to set up a cloud-based knowledge system, choose between supported hosting options, create its folders and files, personalize the system, and configure cloud syncing.
Why use it?
A second brain can become scattered across folders and apps without a clear structure or setup process. This helps choose a home for it, build the structure, personalize it, and check that syncing works.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: reads .claude/ paths; mentions CLAUDE.md; names the AskUserQuestion tool.

Part of the aios plugin — 3 skills shipped together

Good fit Use it to set up a cloud-based knowledge system, choose between supported hosting options, create its folders and files, personalize the system, and configure cloud syncing.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/naveedharri/benai-skills/cloud-os-builder
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 naveedharri/benai-skills --skill cloud-os-builder
Clone the repo
git clone --depth 1 https://github.com/naveedharri/benai-skills

Made for: Claude Code.

Or install aios, the plugin that ships this one along with the rest of its 3 skills.

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 cloud-os-builder

README.md
[![agentmods](https://agentmods.dev/badge/skills/naveedharri/benai-skills/cloud-os-builder/github.svg)](https://agentmods.dev/skills/naveedharri/benai-skills/cloud-os-builder)
Your own site
<a href="https://agentmods.dev/skills/naveedharri/benai-skills/cloud-os-builder"><img src="https://agentmods.dev/badge/skills/naveedharri/benai-skills/cloud-os-builder/github.svg" alt="Measured on agentmods" height="20"></a>

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 cloud-os-builder

Your own site · 80×15
<a href="https://agentmods.dev/skills/naveedharri/benai-skills/cloud-os-builder"><img src="https://agentmods.dev/badge/skills/naveedharri/benai-skills/cloud-os-builder.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 12,628 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. 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: 4 findings, 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 Agent Snooping · line 166
    Skill reads from agent configuration directories (.claude/, .codex/, .gemini/). These directories may contain API keys, personal settings, and other credentials that the skill has no legitimate need to access.
    Fix: Remove all code or instructions that access agent configuration directories (.claude/, .codex/, .gemini/). If configuration values are needed, pass them explicitly as parameters or environment variabl
  • medium Privilege Escalation · line 158
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
  • medium Rogue Agent · line 711
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
  • medium Agent Snooping · line 863
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 $0.00000 $0.12628
Opus 5 $0.00000 $0.06314
Sonnet 5 $0.00000 $0.02526
Haiku 4.5 $0.00000 $0.01263

Measured 11d ago against content hash 30f2c8fa64e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

cloud-os-builder scanned grade B with 1 finding 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 11d 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.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

| `references/settings-json-template.md` | `./.claude/settings.json` |
plugins/aios/skills/cloud-os-builder/SKILL.md · 898 lines

How it starts

The opening of the file, as written. The whole thing — 898 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Cloud OS — Host Selection + Setup + Onboarding

USE WHEN the user runs /cloud-os-builder or asks to set up a Cloud OS, or to host their second brain in a synced cloud folder (Google Drive, OneDrive, iCloud, Dropbox).

This is the Cloud OS tier of the AIOS family. It builds the same structure the Local OS uses, but inside a synced cloud folder so it follows the user across devices — and it omits the Obsidian .obsidian/ layer (that layer does nothing without Obsidian and is the part that syncs badly on consumer cloud). This skill is self-contained: every reference template it needs lives in its own references/ folder; it does not depend on any other skill.

This is a multi-step process:

  • Phase H: Host Selection — ask which cloud and confirm the exact folder path (do this FIRST)
  • Phase 0: Mode Selection — ask which OS variant to create
  • Phase A: Bootstrap — create the directory structure and system files inside the cloud folder (skip Obsidian-specific steps)
  • Phase B: Onboarding — interview the user and personalize everything
  • Phase C: Cloud Sync Setup — exact provider step-by-step + verify sync

Phase H: Host Selection (do this first)

Two questions, via AskUserQuestion (the second only if needed). This keeps each question within the 4-option limit.

H.1 — Route

Ask: "Where do you want to host your OS?" Pass both label and description:

  • Notion — "Build it as a Notion workspace (pages + databases with relations + a home dashboard). You operate from inside Notion; Claude reads/writes via the Notion connector. Realtime + multiplayer, but cloud-only (no local file copy)."
  • Synced cloud folder — "A plain folder synced via Google Drive, iCloud, Dropbox, or OneDrive. Real files on disk; Claude operates it directly. Single-user, with a sync delay."

Branch:

  • If they pick Notion → jump to ## Notion Route near the bottom. Skip Pre-flight, Phase A, and Phase C (those are the file route). The Notion Route reuses Phase 0 and the Phase B interview.
  • If they pick Synced cloud folder → continue with H.2, then Pre-flight → Phase 0 → A → B → C.

Read the full file on GitHub · 898 lines

Files

What ships with it

43 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 11d ago First seen · 898 lines · 0 tokens per session scan B 30f2c8fa64e3

Subscribe to this mod's changes

cloud-os-builder is a skill published in the GitHub repository naveedharri/benai-skills (61 stars, last pushed 7d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 12,628 tokens. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.