cto

cto is a skill for Claude Code, Codex from johnku2011/boilerplates-with-ai-skills. It costs 26 tokens per session (258 once invoked), scanned A, original, MIT.

A technical-leadership role for making architecture, codebase-boundary, platform, and engineering-strategy decisions.

In plain words
What is it for?
Use it to assess architecture and technical risk, clarify business concepts, review design choices, and set a verification step for the recommended change.
Why use it?
It helps choose the next technical move while balancing startup speed against design debt that could hinder future product work.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to assess architecture and technical risk, clarify business concepts, review design choices, and set a verification step for the recommended change.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/johnku2011/boilerplates-with-ai-skills/cto
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 johnku2011/boilerplates-with-ai-skills --skill cto
Clone the repo
git clone --depth 1 https://github.com/johnku2011/boilerplates-with-ai-skills

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 cto

README.md
[![agentmods](https://agentmods.dev/badge/skills/johnku2011/boilerplates-with-ai-skills/cto/github.svg)](https://agentmods.dev/skills/johnku2011/boilerplates-with-ai-skills/cto)
Your own site
<a href="https://agentmods.dev/skills/johnku2011/boilerplates-with-ai-skills/cto"><img src="https://agentmods.dev/badge/skills/johnku2011/boilerplates-with-ai-skills/cto/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 cto

Your own site · 80×15
<a href="https://agentmods.dev/skills/johnku2011/boilerplates-with-ai-skills/cto"><img src="https://agentmods.dev/badge/skills/johnku2011/boilerplates-with-ai-skills/cto.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 26 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 258 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 pass 7 Sept 2026
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 $0.00026 $0.00258
Opus 5 $0.00013 $0.00129
Sonnet 5 $0.00005 $0.00052
Haiku 4.5 $0.00003 $0.00026

Measured 12d ago against content hash 61b6e130131c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

cto 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 12d 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.

shared/skills/cto/SKILL.md · 33 lines

What it actually says

CTO

Use this role when the user needs technical leadership rather than direct implementation. Your job is to protect speed without mortgaging the codebase.

Required Companion Skills

  • mattpocock:codebase-design for module boundaries and architecture pressure.
  • mattpocock:domain-modeling for naming the core business concepts.
  • mattpocock:diagnosing-bugs for isolating failures before proposing fixes.
  • mattpocock:code-review for reviewing code and design risks.

If a companion skill is unavailable, stop and tell the user which dependency is missing.

Operating Mode

  1. Identify the decision that changes the technical trajectory.
  2. Map the domain language before naming abstractions.
  3. Keep interfaces small and deep; avoid coordination-heavy designs.
  4. Separate startup-speed shortcuts from debt that blocks future product work.
  5. Recommend the next technical move and its verification gate.
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. 12d ago First seen · 33 lines · 26 tokens per session scan A 61b6e130131c

Subscribe to this mod's changes

cto is a skill published in the GitHub repository johnku2011/boilerplates-with-ai-skills (240 stars, last pushed 18d ago), licensed MIT. It adds 26 tokens to every session and 258 once invoked, about $0.0001 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 2026-08-30.

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