plan-ceo

plan-ceo is a skill for Claude Code, Codex from Himanshu-Sangshetti/cursor-stack. It costs 73 tokens per session (2,054 once invoked), scanned A, original, MIT.

A product-planning review mode that acts like a founder or chief executive. It examines whether a proposed product or feature is worth building and can expand, preserve, or reduce its scope.

In plain words
What is it for?
Use it to challenge a product direction, make an accepted plan more rigorous, imagine a larger version, or reduce a feature to its essentials.
Why use it?
It helps expose unclear goals, missed failure cases, unnecessary work, and weak product decisions before implementation. It does not change code.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/himanshu-sangshetti/cursor-stack/plan-ceo
Any agent
npx skills add Himanshu-Sangshetti/cursor-stack --skill plan-ceo
Clone the repo
git clone --depth 1 https://github.com/Himanshu-Sangshetti/cursor-stack

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/himanshu-sangshetti/cursor-stack/plan-ceo.svg)](https://agentmods.dev/skills/himanshu-sangshetti/cursor-stack/plan-ceo)
Your own site
<a href="https://agentmods.dev/skills/himanshu-sangshetti/cursor-stack/plan-ceo"><img src="https://agentmods.dev/badge/skills/himanshu-sangshetti/cursor-stack/plan-ceo.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,054 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00073 $0.02054
Opus 5 $0.00036 $0.01027
Sonnet 5 $0.00015 $0.00411
Haiku 4.5 $0.00007 $0.00205

Measured 4d ago against content hash 6fa89cf54156, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-ceo 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 4d 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.

plan-ceo/SKILL.md · 192 lines

How it starts

The opening of the file, as written. The whole thing — 192 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Plan CEO Review - Founder Mode

You are now in Founder/CEO mode. Your job is NOT to implement literally. Your job is to challenge whether this is even the right thing to build.

Philosophy

You are not here to rubber-stamp. Your posture depends on what the user needs:

  • SCOPE EXPANSION: You are building a cathedral. Envision the platonic ideal. Push scope UP. Ask "what would make this 10x better for 2x the effort?" You have permission to dream.
  • HOLD SCOPE: The plan's scope is accepted. Your job is to make it bulletproof — catch every failure mode, ensure we're solving the right problem. 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: Once the user selects a mode, COMMIT to it. Do not silently drift.

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

Engineering Preferences

Use these to guide all recommendations:

  • DRY — flag repetition aggressively
  • Well-tested — prefer more tests over fewer
  • "Engineered enough" — not under- or over-engineered
  • Explicit over clever
  • Minimal diff — fewest new abstractions and files touched
  • Observability — logs, metrics, traces for new codepaths
  • Security — threat model for new paths

Pre-Review: System Audit

Before Step 0, gather context.

Project overrides: If @cursor-stack or AGENTS.md contains a cursor-stack section (mainBranch, testCommand, complexityThreshold, branchPrefix, etc.), apply those values. Use them for git commands, complexity checks, and any project-specific thresholds.

If researcher output exists in the conversation, use its Research Brief: codebase findings, domain knowledge, technical options, and key questions. Incorporate into your analysis.

Run:

git log --oneline -30
git diff main --stat
git stash list

Search for TODO/FIXME/HACK in the codebase. Examples:

  • Unix/Git Bash: grep -r "TODO\|FIXME\|HACK" --include="*.ts" --include="*.tsx" --include="*.py" --include="*.js" -l 2>/dev/null | head -20
  • ripgrep: rg "TODO|FIXME|HACK" -l (if installed)
  • Windows PowerShell: Get-ChildItem -Recurse -Include *.ts,*.tsx,*.py,*.js | Select-String -Pattern "TODO|FIXME|HACK" -List | Select-Object -First 20 -ExpandProperty Path

Read the full file on GitHub · 192 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. 4d ago First seen · 192 lines · 73 tokens per session scan A 6fa89cf54156

Subscribe to this mod's changes

plan-ceo is a skill published in the GitHub repository Himanshu-Sangshetti/cursor-stack (6 stars, last pushed 5mo ago), licensed MIT. It adds 73 tokens to every session and 2,054 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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