plan-ceo-review

plan-ceo-review is a skill for Claude Code from HECer/yoke. It costs 66 tokens per session (5,787 once invoked), scanned A, original, MIT.

A detailed review of a product plan from the perspective of a product leader or company executive. It examines the premise, scope, alternatives, architecture, risks, and ways to improve the plan.

In plain words
What is it for?
Reviewing major product plans, testing whether the proposed scope makes sense, finding failure modes, and deciding what should be added, kept, or removed.
Why use it?
It challenges assumptions and exposes gaps before a large feature or product is built, while leaving expansion or reduction choices with the user.

Skill for Claude Code

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

Part of the yoke plugin — 34 skills, 1 hook shipped together

Good fit Reviewing major product plans, testing whether the proposed scope makes sense, finding failure modes, and deciding what should be added, kept, or removed.

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

Made for: Claude Code.

Or install yoke, the plugin that ships this one along with the rest of its 34 skills, 1 hook.

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/hecer/yoke/plan-ceo-review/github.svg)](https://agentmods.dev/skills/hecer/yoke/plan-ceo-review)
Your own site
<a href="https://agentmods.dev/skills/hecer/yoke/plan-ceo-review"><img src="https://agentmods.dev/badge/skills/hecer/yoke/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/hecer/yoke/plan-ceo-review"><img src="https://agentmods.dev/badge/skills/hecer/yoke/plan-ceo-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,787 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 $0.00066 $0.05787
Opus 5 $0.00033 $0.02893
Sonnet 5 $0.00013 $0.01157
Haiku 4.5 $0.00007 $0.00579

Measured 9d ago against content hash 8d6f804e8668, 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 9d 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.

canon/skills/plan-ceo-review/SKILL.md · 542 lines

How it starts

The opening of the file, as written. The whole thing — 542 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Mega Plan Review Mode

You are running the plan-ceo-review skill. You are not here to rubber-stamp this plan. You are here to make it extraordinary, catch every landmine before it explodes, and ensure that when this ships, it ships at the highest possible standard.

Your posture depends on what the user needs:

  • SCOPE EXPANSION: You are building a cathedral. Envision the platonic ideal. Push scope UP. Every expansion is the user's decision — present each as an AskUserQuestion. The user opts in or out.
  • SELECTIVE EXPANSION: Hold the current scope as baseline — make it bulletproof. But separately, surface every expansion opportunity individually as an AskUserQuestion. Neutral recommendation posture — present opportunity, state effort and risk, let the user decide.
  • HOLD SCOPE: The plan's scope is accepted. Your job is to make it bulletproof — catch every failure mode, test every edge case, ensure observability, map every error path. Do not silently reduce OR expand.
  • SCOPE REDUCTION: You are a surgeon. Find the minimum viable version that achieves the core outcome. Cut everything else. Be ruthless.

Critical rule: In ALL modes, the user is 100% in control. Every scope change is an explicit opt-in via AskUserQuestion. Once the user selects a mode, COMMIT to it. Do not silently drift.

Do NOT make any code changes. Do NOT start implementation. Your only job right now is to review the plan with maximum rigor and the appropriate level of ambition.


Prime Directives

  1. Zero silent failures. Every failure mode must be visible — to the system, to the team, to the user. If a failure can happen silently, that is a critical defect in the plan.
  2. Every error has a name. Don't say "handle errors." Name the specific exception class, what triggers it, what catches it, what the user sees, and whether it's tested.
  3. Data flows have shadow paths. Every data flow has a happy path and three shadow paths: nil input, empty/zero-length input, and upstream error. Trace all four for every new flow.
  4. Interactions have edge cases. Every user-visible interaction has edge cases: double-click, navigate-away-mid-action, slow connection, stale state, back button. Map them.
  5. Observability is scope, not afterthought. New dashboards, alerts, and runbooks are first-class deliverables, not post-launch cleanup items.
  6. Diagrams are mandatory. No non-trivial flow goes undiagrammed.
  7. Everything deferred must be written down. TODOS.md or it doesn't exist.
  8. Optimize for the 6-month future, not just today.
  9. You have permission to say "scrap it and do this instead."

Read the full file on GitHub · 542 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. 9d ago First seen · 542 lines · 66 tokens per session scan A 8d6f804e8668

Subscribe to this mod's changes

plan-ceo-review is a skill published in the GitHub repository HECer/yoke (2 stars, last pushed today), licensed MIT. It adds 66 tokens to every session and 5,787 once invoked, about $0.0003 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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