plan-ceo-review

plan-ceo-review is a skill for Claude Code, Codex from timurgaleev/vibestack. It costs 81 tokens per session (18,573 once invoked), scanned A, original, MIT.

A structured review for a CEO or founder who wants to rethink a product plan. It examines the problem, challenges the plan’s assumptions, and chooses whether to expand, keep, or reduce its scope.

In plain words
What is it for?
Use it for strategy reviews, scope decisions, product rethinking, and questions about whether an idea is ambitious enough.
Why use it?
It helps expose weak premises and decide how ambitious a plan should be before work is committed.

Skill for Claude CodeCodex

Written for Claude Code and Codex: allowed-tools in frontmatter, but also runs codex exec. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions subagents.

Good fit Use it for strategy reviews, scope decisions, product rethinking, and questions about whether an idea is ambitious enough.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/timurgaleev/vibestack/plan-ceo-review
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 timurgaleev/vibestack --skill plan-ceo-review
Clone the repo
git clone --depth 1 https://github.com/timurgaleev/vibestack

Made for: Claude Code, Codex.

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 plan-ceo-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/timurgaleev/vibestack/plan-ceo-review/github.svg)](https://agentmods.dev/skills/timurgaleev/vibestack/plan-ceo-review)
Your own site
<a href="https://agentmods.dev/skills/timurgaleev/vibestack/plan-ceo-review"><img src="https://agentmods.dev/badge/skills/timurgaleev/vibestack/plan-ceo-review/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 plan-ceo-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/timurgaleev/vibestack/plan-ceo-review"><img src="https://agentmods.dev/badge/skills/timurgaleev/vibestack/plan-ceo-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 18,573 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: 7 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 Tool Misuse · line 1097
    Tool parameters are crafted to achieve unintended or unsafe behavior. Parameter abuse can bypass intended safety checks (e.g. shell=True, --force, dangerous glob patterns).
    Fix: Validate all tool parameters against an allowlist. Reject dangerous parameter values (shell=True, --force, -rf /) and use safe defaults.
  • medium Agent Snooping · line 271
    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.
  • medium Agent Snooping · line 320
    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.
  • medium Rogue Agent · line 476
    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.
  • low Excessive Agency · line 5
    Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.
    Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.
  • low Excessive Agency · line 15
    Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.
    Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.
  • low Excessive Agency · line 22
    Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.
    Fix: Limit the skill's scope to its documented purpose. Remove instructions that enable the agent to perform actions outside its stated functionality.
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 $0.00081 $0.18573
Opus 5 $0.00041 $0.09287
Sonnet 5 $0.00016 $0.03715
Haiku 4.5 $0.00008 $0.01857

Measured 6d ago against content hash 504576daa0ac, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

plan-ceo-review 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 6d 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/plan-ceo-review/SKILL.md · 1,214 lines

How it starts

The opening of the file, as written. The whole thing — 1,214 lines — stays where its author put it; the contents beside it link to each section on GitHub.

When to invoke

Use when asked to "think bigger", "expand scope", "strategy review", "rethink this", or "is this ambitious enough".

Proactively suggest when the user is questioning scope or ambition of a plan, or when the plan feels like it could be thinking bigger.

Preamble

eval "$(~/.vibestack/bin/vibe-slug 2>/dev/null)" 2>/dev/null || SLUG="unknown"
_LEARN_FILE="${VIBESTACK_HOME:-$HOME/.vibestack}/projects/${SLUG:-unknown}/learnings.jsonl"
if [ -f "$_LEARN_FILE" ]; then
  _LEARN_COUNT=$(wc -l < "$_LEARN_FILE" 2>/dev/null | tr -d ' ')
  echo "LEARNINGS: $_LEARN_COUNT entries loaded"
  if [ "$_LEARN_COUNT" -gt 5 ] 2>/dev/null; then
    ~/.vibestack/bin/vibe-learnings-search --limit 5 2>/dev/null || true
  fi
else
  echo "LEARNINGS: none yet"
fi

{{include lib/snippets/session-host.md}}

{{include lib/snippets/decision-brief.md}}

{{include lib/snippets/working-protocols.md}}

{{include lib/snippets/state-protocols.md}}

Plan Mode Operating Rules

This review runs start to finish inside plan mode. Two things the plan-mode restriction is not meant to stop:

Safe operations. Reading files, git inspection, the codex exec outside-voice pass, writes under ~/.vibestack/, and writes to the plan file itself are all in-bounds — none of them touch project source. The commands marked "PLAN MODE EXCEPTION — ALWAYS RUN" below belong to this set; skipping one leaves a downstream consumer (the readiness dashboard, the next session's context) with a hole it cannot detect.

This skill's own questions. An AskUserQuestion — or its prose fallback — is how the review does its work, not a violation to route around, and it satisfies plan mode's end-of-turn requirement the same way ExitPlanMode does. Treat this file as instructions to execute, not reference material to summarize. Where a step says STOP, stop there and wait for the answer; calling ExitPlanMode to end the turn instead ships a half-finished review as if it were the final plan.

Step 0: Detect platform and base branch

Read the full file on GitHub · 1,214 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. 6d ago Changed · +81 lines 504576daa0ac
  2. 9d ago First seen · 1,133 lines · 81 tokens per session scan A 3c95fb8d80df

Subscribe to this mod's changes

plan-ceo-review is a skill published in the GitHub repository timurgaleev/vibestack (6 stars, last pushed 7d ago), licensed MIT. It adds 81 tokens to every session and 18,573 once invoked, about $0.0004 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 2026-08-31.

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