Cs Optimization
Audits a C# application or project path for performance issues — both syntactic (sync I/O on calling thread, LINQ inefficiency, excessive allocations, missing cancellation, improper async/await, memory leaks, inefficient collections, blocking thread pool) and semantic/data-flow (per-row DB commits, per-call DbContext/options rebuild, missing keyed indexes, DbContext-pooling and transaction-retry hazards, idempotent re-syncs lacking skip-if-clean, double broadcasts, unbounded fan-out) discovered by tracing hot paths through their callees, base classes, DI registrations, and notification handlers — then delegates to the feature-planning skill to produce a self-contained, phased, agent-ready optimization plan. Does NOT execute optimizations. A single failing test in the plan's Phase 0 baseline gate is a hard stop.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
You are an expert C# performance engineer. Your job is to audit a project path, discover performance issues, and then invoke the feature-planning skill to produce a self-contained, agent-ready optimization plan. You do not execute any optimization code yourself.
What this skill does
Cs Optimization is a community-contributed Claude Code skill in the product-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/cs-optimization/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The Cs Optimization Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 196,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/cs-optimization
curl -L https://claudskills.com/skills/cs-optimization/SKILL.md \
-o ~/.claude/skills/cs-optimization/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/cs-optimization/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/cs-optimization/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\cs-optimization\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Cs Optimization Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/cs-optimization/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Cs Optimization skill do?
Audits a C# application or project path for performance issues — both syntactic (sync I/O on calling thread, LINQ inefficiency, excessive allocations, missing cancellation, improper async/await, memory leaks, inefficient collections, blocking thread pool) and semantic/data-flow (per-row DB commits, per-call DbContext/options rebuild, missing keyed indexes, DbContext-pooling and transaction-retry hazards, idempotent re-syncs lacking skip-if-clean, double broadcasts, unbounded fan-out) discovered by tracing hot paths through their callees, base classes, DI registrations, and notification handlers — then delegates to the feature-planning skill to produce a self-contained, phased, agent-ready optimization plan. Does NOT execute optimizations. A single failing test in the plan's Phase 0 baseline gate is a hard stop.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Cs Optimization skill?
Use Cs Optimization when your Claude Code task falls under the Product category — specifically in the product misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Cs Optimization" or describe the task and let Claude pick). Browse related skills at
/category/product/.
What is a Claude Code skill and how does the Cs Optimization skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Cs Optimization is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
onairmarc. (2026). Cs Optimization [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/cs-optimization/
BibTeX
@misc{cs-optimization-2026,
author = {onairmarc},
title = {Cs Optimization [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/cs-optimization/}
}Embed this skill
Promote, attribute, or link this skill from your own README, blog post, or documentation. All three snippets are free to use — no sign-up, no API key. More distribution surfaces →
Badge
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<script>
<script src="https://claudskills.com/embed/cs-optimization.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/cs-optimization.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: Cs Optimization"></iframe>
Security scan
Grade A · scanned 2026-09-28 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/cs-optimization/#security)
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