ccc-onboard

ccc-onboard is a skill for Claude Code from KevinZai/commander. It costs 62 tokens per session (2,059 once invoked), scanned A, original, MIT.

A guided onboarding workflow for someone joining a code repository. A repository is the project’s shared codebase, including its instructions, scripts, and files.

In plain words
What is it for?
Use it to inspect project instructions, package scripts, the technology stack, and workspace structure. It can prepare role-specific starter links, checklists, and first contribution steps.
Why use it?
It replaces a generic introduction with a first-hour guide based on the repository’s own rules and tools. It also helps choose a role and a suitable first task.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; mentions CLAUDE.md; names the AskUserQuestion tool.

Good fit Use it to inspect project instructions, package scripts, the technology stack, and workspace structure. It can prepare role-specific starter links, checklists, and first contribution steps.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kevinzai/commander/ccc-onboard
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 KevinZai/commander --skill ccc-onboard
Clone the repo
git clone --depth 1 https://github.com/KevinZai/commander

Made for: Claude Code.

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 ccc-onboard

README.md
[![agentmods](https://agentmods.dev/badge/skills/kevinzai/commander/ccc-onboard/github.svg)](https://agentmods.dev/skills/kevinzai/commander/ccc-onboard)
Your own site
<a href="https://agentmods.dev/skills/kevinzai/commander/ccc-onboard"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/ccc-onboard/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 ccc-onboard

Your own site · 80×15
<a href="https://agentmods.dev/skills/kevinzai/commander/ccc-onboard"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/ccc-onboard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 62 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,059 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 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: 1 finding, up to medium

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 →

  • medium Excessive Agency · line 4
    Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.
    Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
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 $0.00062 $0.02059
Opus 5.5 $0.00025 $0.00824
Sonnet 5.5 $0.00012 $0.00412
Haiku 4.5 $0.00006 $0.00206

Measured 8d ago against content hash fd683cdd7899, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ccc-onboard scanned grade A 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 8d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

On Codex, AskUserQuestion becomes a plain-text question with the same options, and WebFetch becomes a `curl -sI` reachability check.
commander/cowork-plugin-codex/skills/ccc-onboard/SKILL.md · 206 lines

How it starts

The opening of the file, as written. The whole thing — 206 lines — stays where its author put it; the contents beside it link to each section on GitHub.

$ccc-onboard — contributor first hour

CC Commander · $ccc-onboard · role → first task → a verified first hour

Build the guide from the repository's own instructions and scripts, never from a generic open-source checklist. The skill is read-only: it inspects files and tool versions and returns a plan; it installs, edits and commits nothing.

On Codex, AskUserQuestion becomes a plain-text question with the same options, and WebFetch becomes a curl -sI reachability check.

When to use / when not to

  • Use when a contributor is new to a repository (any repository, including Commander's own) and needs a practical first hour.
  • Use $ccc-start for first-run Commander onboarding, $ccc-adopt to add Commander conventions to a project's CLAUDE.md, and $ccc-xray for a project health scorecard.

What happens

1. Brand header

**CC Commander** · $ccc-onboard · Contributor first hour

2. Repo context

Read only the files that exist, in this order:

  • CLAUDE.md — local conventions, required tools, test commands, workflow rules
  • BIBLE.md — product architecture, domain language, non-negotiable project rules
  • package.json — scripts, package manager clues, workspace structure
  • README.md — only if the first three do not yield enough starter links
ls CLAUDE.md BIBLE.md package.json README.md 2>/dev/null
git rev-parse --show-toplevel 2>/dev/null

Summarize in one line:

Repo: <name> · package manager: <npm|bun|pnpm|yarn|unknown> · scripts: <top useful scripts> · primary stack: <detected stack>

If none of the four files exist and there is no git root, say so and stop: there is no repo truth to build from.

3. Clone-time validator

Run before writing the checklist. CLAUDE.md is the source of truth for required tool versions; also check the common tools:

node --version
bun --version
npm --version
git --version
gh --version

Package manager clues:

test -f bun.lockb && echo bun
test -f bun.lock && echo bun
test -f pnpm-lock.yaml && echo pnpm
test -f yarn.lock && echo yarn
test -f package-lock.json && echo npm

Read the full file on GitHub · 206 lines

Files

What ships with it

1 file 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. 8d ago Changed · -17 lines · +30 tokens per session fd683cdd7899
  2. 1mo ago First seen · 223 lines · 32 tokens per session scan A d9a830a2cbf0

Subscribe to this mod's changes

ccc-onboard is a skill published in the GitHub repository KevinZai/commander (6 stars, last pushed yesterday), licensed MIT. It adds 62 tokens to every session and 2,059 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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