ccc-e2e

ccc-e2e is a skill for Claude Code from KevinZai/commander. It costs 70 tokens per session (2,243 once invoked), scanned A, original, MIT.

An end-to-end pre-release assessment that runs quality checks, unit tests using test-driven development, and end-to-end tests in three isolated workspaces. Test-driven development means writing tests as part of guiding the implementation; end-to-end tests check complete user flows.

In plain words
What is it for?
Use it to run parallel pre-release checks, record assessment phases, report critical findings, and create follow-up fix tasks.
Why use it?
It checks the main parts of a change before release and combines the results into one pass-or-fail verdict.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: model in frontmatter; names the AskUserQuestion tool; runs codex exec.

Good fit Use it to run parallel pre-release checks, record assessment phases, report critical findings, and create follow-up fix tasks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/kevinzai/commander/ccc-e2e
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-e2e
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-e2e

README.md
[![agentmods](https://agentmods.dev/badge/skills/kevinzai/commander/ccc-e2e/github.svg)](https://agentmods.dev/skills/kevinzai/commander/ccc-e2e)
Your own site
<a href="https://agentmods.dev/skills/kevinzai/commander/ccc-e2e"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/ccc-e2e/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-e2e

Your own site · 80×15
<a href="https://agentmods.dev/skills/kevinzai/commander/ccc-e2e"><img src="https://agentmods.dev/badge/skills/kevinzai/commander/ccc-e2e.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 70 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,243 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: 2 findings, 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 226
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • 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 $0.00070 $0.02243
Opus 5.5 $0.00028 $0.00897
Sonnet 5.5 $0.00014 $0.00449
Haiku 4.5 $0.00007 $0.00224

Measured 5d ago against content hash 88e5ccc6f0bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ccc-e2e 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 5d 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.

commander/cowork-plugin-codex/skills/ccc-e2e/SKILL.md · 168 lines

How it starts

The opening of the file, as written. The whole thing — 168 lines — stays where its author put it; the contents beside it link to each section on GitHub.

$ccc-e2e — Full-surface confidence before shipping

CC Commander · $ccc-e2e · parallel QA, unit and E2E workers, one honest verdict

Composes $ccc-fleet (parallel dispatch, worktree isolation) with $ccc-testing (testing lanes). Audit only: workers find and report, they do not fix.

When to use / when not to

  • Use before tagging a major or minor release, after merging a feature that touches five or more files, after a cross-module refactor, or when the user feels coverage is thin but cannot say where.
  • Quick bug-fix patch: $ccc-review. Single-file change: $ccc-testing. Docs-only change: skip. Hotfix under time pressure: $ccc-ship pre-flight.
  • Codex: ask pickers as plain-text questions and run each worker as codex exec --json --sandbox workspace-write in its own git worktree; the session tools below are skipped.

What happens

1. Context strip

Run in parallel, silent on failure:

git rev-parse --abbrev-ref HEAD
BASE=$(git symbolic-ref --short refs/remotes/origin/HEAD 2>/dev/null | sed 's#^origin/##'); BASE=${BASE:-main}
git rev-list --count "$BASE"..HEAD 2>/dev/null
git diff --shortstat "$BASE"..HEAD 2>/dev/null
git diff --name-only "$BASE"..HEAD 2>/dev/null
test -f package.json && node -p "require('./package.json').version"

Render one line: 🎯 Branch: <branch> · <N> commits ahead of <base> · <X> files changed · version: <ver>.

2. Scope

If $ARGUMENTS is status, jump to "Status" below. If it is full, qa-unit, e2e-only or quick (qa-only is an alias for quick), use it and skip the picker. Otherwise ask the scope picker (Decision points).

After scope is set, call mcp__ccd_session__mark_chapter with title "E2E assessment: <branch>" and summary "<N>-worker fan-out starting on <branch>".

3. Fan out workers

Dispatch with the Agent tool, following $ccc-fleet's Agent-tool rules. Send every worker call in one message so they start together. Every call uses:

  • subagent_type: "qa-engineer" (general-purpose if the plugin agent is not registered)
  • model: "sonnet", effort: "medium", isolation: "worktree", run_in_background: true
  • a prompt that starts: "FIRST: run git rev-parse --show-toplevel. It must be your assigned worktree, not the main checkout; abort and report if it is not. Audit only: do not fix, commit, push or merge."

Read the full file on GitHub · 168 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. 5d ago Changed · -81 lines · +23 tokens per session 88e5ccc6f0bf
  2. 1mo ago First seen · 249 lines · 47 tokens per session scan A 95800951f6de

Subscribe to this mod's changes

ccc-e2e is a skill published in the GitHub repository KevinZai/commander (6 stars, last pushed today), licensed MIT. It adds 70 tokens to every session and 2,243 once invoked, about $0.0003 per session on Opus 5.5. 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 2026-08-31.

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