Repo Hygiene Scan and Fix
QwenLM/qwen-code
Scheduled CI skill that scans a repository for small, certain docs, test and code hygiene issues and fixes them on one branch with a commit per finding.
/cs:cto-review <plan — Architecture and scaling interrogation.
Install Cto Review
$ npx skills add alirezarezvani/claude-skills --skill cto-review -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alirezarezvani/claude-skills cto-review --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/c-level-agents/skills/cto-review .claude/skills/cto-review && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "cto-review" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-review into .claude/skills/cto-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cto-review", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-reviewType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add alirezarezvani/claude-skills --skill cto-review -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alirezarezvani/claude-skills cto-review --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/c-level-agents/skills/cto-review .agents/skills/cto-review && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cto-review" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-review into .agents/skills/cto-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cto-review", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alirezarezvani/claude-skills --skill cto-review -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alirezarezvani/claude-skills cto-review --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/c-level-agents/skills/cto-review .cursor/skills/cto-review && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "cto-review" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-review into .cursor/skills/cto-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cto-review", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/alirezarezvani/claude-skills.git --path c-level-agents/skills/cto-review--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add alirezarezvani/claude-skills --skill cto-review -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alirezarezvani/claude-skills cto-review --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/c-level-agents/skills/cto-review .gemini/skills/cto-review && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "cto-review" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-review into .gemini/skills/cto-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cto-review", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install alirezarezvani/claude-skills cto-reviewInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add alirezarezvani/claude-skills --skill cto-review -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/c-level-agents/skills/cto-review .github/skills/cto-review && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "cto-review" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-review into .github/skills/cto-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cto-review", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alirezarezvani/claude-skills --skill cto-review -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install alirezarezvani/claude-skills cto-review --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/c-level-agents/skills/cto-review .opencode/skills/cto-review && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "cto-review" agent skill from https://github.com/alirezarezvani/claude-skills/tree/main/c-level-agents/skills/cto-review into .opencode/skills/cto-review/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cto-review", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
cto-review- GitHub stars
- 28k
- Token cost
- ~848 tokens
- SKILL.md length
- 291 words
- Files
- 1
- Skills in repo
- 342
- Repo updated
- First seen
- Licence
- MIT
At a glance
/cs:cto-review <plan — Architecture and scaling interrogation.
- Works in 6 steps: Scaling Cliff → Tech Debt Inventory → Team Scaling → …
- Committing to an architecture
- SKILL.md covers When to Run, The Six CTO Questions, Workflow and Output Format, plus 2 more sections
- Calls python
What it does
Cto Review is an agent skill from alirezarezvani/claude-skills. /cs:cto-review <plan — Architecture and scaling interrogation. Tech debt, scaling cliffs, team scaling, build-vs-buy. Use when committing to an architecture, planning for 10x load, or weighing a rebuild against a vendor.
Its SKILL.md is about 850 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in DevOps & Cloud, covering Technical debt and Site reliability engineering. The repository describes itself as: 380 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 380+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8… The licence is MIT.
When your agent uses it
- Committing to an architecture
- Planning for 10x load
- Weighing a rebuild against a vendor
Example prompts
- “/cto-review”
Requirements
- Python 3
Workflow steps
6 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit 19392f7. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
python
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Cto Review loads about 848 tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 291 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from alirezarezvani/claude-skills at commit 19392f7, republished under its MIT licence (© alirezarezvani). 291 words, ~848 tokens.
Download SKILL.mdSave it as
.claude/skills/cto-review/SKILL.md (or your agent's skills folder).- name
- cto-review
- description
- /cs:cto-review <plan> — Architecture and scaling interrogation. Tech debt, scaling cliffs, team scaling, build-vs-buy. Use when committing to an architecture, planning for 10x load, or weighing a rebuild against a vendor.
/cs:cto-review — CTO Forcing Questions
Command: /cs:cto-review <plan>
Pressure-tests architecture and engineering scaling decisions. Six questions to surface the next scaling cliff before you hit it.
When to Run
- Before approving a major architecture change
- Before doubling the engineering team
- Before a build-vs-buy decision > $100K/year
- When a system is showing reliability stress (SLOs missed)
- Before committing to a new platform / language / DB
The Six CTO Questions
1. Scaling Cliff
Where does the current architecture break, in terms of users / requests / data volume?
- Be specific. "It breaks at 10× current load because the primary DB writes saturate."
- If you don't know, run a load test before deciding.
2. Tech Debt Inventory
What's the top tech debt item, what's it costing per week, and when does it become blocking?
python ../../../c-level-advisor/skills/cto-advisor/scripts/tech_debt_analyzer.py3. Team Scaling
For each open req, what's the ramp time and contribution model?
python ../../../c-level-advisor/skills/cto-advisor/scripts/team_scaling_calculator.py4. Build vs Buy
Why are we building this instead of buying it — and what's the 3-year TCO of each?
- If "we want control" or "it's not that hard" — push back.
- If the answer is "this is our core moat," build.
5. SLO / Reliability
What are the SLOs for this system and what's the current error budget burn?
- Without an SLO, you can't reason about reliability tradeoffs.
- See
engineering/slo-architectfor SLO design.
6. Security & Compliance Surface
What does this expose, and has cs-ciso-advisor signed off?
- Architecture decisions are compliance decisions.
- Loop in cs-ciso-advisor before commit.
Workflow
- Run the tech debt analyzer + team scaling calculator
- Define the scaling-cliff hypothesis explicitly
- Cross-check with cs-ciso-advisor for security implications
- Apply the verdict
Output Format
# CTO Review: <plan>
**Date:** YYYY-MM-DD
## Scaling Cliff
- Current capacity: <metric>
- Break point: <metric>
- Headroom: X months at current growth
## Tech Debt
- Top item: <description>
- Cost per week: $X or N eng-hours
- Blocking date estimate: <date>
## Team
- Open reqs: N
- Median ramp: X months
- Contribution model: <pairing / squad / area>
## Build vs Buy
- 3-year build TCO: $X
- 3-year buy TCO: $X
- Strategic fit: <core / context>
- Decision: BUILD | BUY
## Reliability
- SLO defined: yes / no
- Error budget burn: X% (target < Y%)
## Security
- cs-ciso sign-off: ✅ / ❌
## Verdict
🟢 SHIP | 🟡 SHARPEN | 🔴 BLOCK
## Next Steps
[3 concrete actions]Routing
/cs:ciso-review— mandatory if data surface changes/cs:cfo-review— for build-vs-buy > $100K/cs:execute— quarterly plan/cs:boardroom— for architecture pivots
Related
- Agent:
cs-cto-advisor - Skill:
cto-advisor - SLO:
../../../engineering/slo-architect/
Version: 1.0.0
© alirezarezvani, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in c-level-agents/skills/cto-review of alirezarezvani/claude-skills.
Open the folder on GitHubat commit 19392f7
Compare with similar skills
Cto Review next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Cto Review this skillalirezarezvani/claude-skills | 28k | — | ~848 | Automated safety check: Pass | MIT | |
| Repo Hygiene Scan and FixQwenLM/qwen-code | 28k | — | ~1.7k | Automated safety check: Pass | Apache-2.0 | |
| Broken API InterviewerPrepLabsAI/InterviewMentor | 112 | — | ~2.6k | Automated safety check: Pass | MIT | |
| PR Reviewagentic-community/mcp-gateway-registry | 968 | — | ~4.7k | Automated safety check: Notes | Apache-2.0 | |
| Roadmap Planningmanager-dot-dev/manager-skills | 114 | — | ~4.9k | Automated safety check: Pass | MIT | |
| Factor Of Safety Failure Marginhashgraph-online/awesome-codex-plugins | 1.3k | — | ~1.9k | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Cto Review
What does Cto Review do?
/cs:cto-review <plan — Architecture and scaling interrogation. Cto Review is an agent skill from alirezarezvani/claude-skills. /cs:cto-review <plan — Architecture and scaling interrogation.
When should I use Cto Review?
Cto Review fits situations like: committing to an architecture; planning for 10x load; weighing a rebuild against a vendor.
How do I install Cto Review in Claude Code?
Run `npx skills add alirezarezvani/claude-skills --skill cto-review -a claude-code`. Or copy the skill folder (c-level-agents/skills/cto-review in alirezarezvani/claude-skills) into .claude/skills/cto-review in your project. Claude Code loads it when a task matches its description.
How do I install Cto Review in Codex?
Run `npx skills add alirezarezvani/claude-skills --skill cto-review -a codex`. Or copy the skill folder (c-level-agents/skills/cto-review in alirezarezvani/claude-skills) into .agents/skills/cto-review in your project. Codex loads it when a task matches its description.
Can I use Cto Review in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add alirezarezvani/claude-skills --skill cto-review -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cto-review, .gemini/skills/cto-review, .github/skills/cto-review and .opencode/skills/cto-review in your project.
What does Cto Review need to run?
Going by SKILL.md and its folder, Cto Review needs the command-line tools its instructions call (python). Our summary lists: Python 3.
Does Cto Review access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Cto Review safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Cto Review use?
Cto Review is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Cto Review use?
About 848 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Cto Review?
Skills that share tags, products or a category with Cto Review: Repo Hygiene Scan and Fix (QwenLM/qwen-code, 28k stars), Broken API Interviewer (PrepLabsAI/InterviewMentor, 112 stars), PR Review (agentic-community/mcp-gateway-registry, 968 stars) and Roadmap Planning (manager-dot-dev/manager-skills, 114 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cto Review?
alirezarezvani (a GitHub user) maintains it in alirezarezvani/claude-skills, which has 27,938 GitHub stars. The repository holds 342 skills in this directory. The repository was last updated on August 30, 2026.
Source: alirezarezvani/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.