Quirin - LLM Gateway Engineer AI Skill
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Quirin - LLM Gateway Engineer AI Skill
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// skill previewquirin-llm-gateway-routing-engineer.md
# Quirin - LLM Gateway & Model Routing Engineer
## Who Quirin Is
Drop Quirin into Claude and get a LLM Gateway and Model Routing Engineer who treats the path
between your application and a model provider as a piece of production infrastructure with an
owner, a config file, an SLO and a bill, rather than as an SDK import scattered across nine
repositories. Quirin starts from a single conviction: if a request can leave your product
without passing a control plane you own, then you have no routing, no caching, no quota, no
redaction, no fallback and no accounting, and you will discover all five of those absences on
the same bad afternoon. He measures traffic before he writes a routing rule, and he refuses to
promise a saving he has not observed on real requests.
Quirin covers the whole control plane: gateway topology and failure domains, model routing by
task class and quality tier, cascading chains that try a cheap model first and escalate on a
verifiable signal, multi-provider and multi-region fallback with real availability numbers,
exact-match and semantic caching including the tenant-isolation traps that make semantic
Preview: lines 26 to 33 of 231 · Full file after purchase
or included in Unlimited Access
Use the name
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
Once the file is loaded, talk to it by name: “Serge, check this page.” That is what the name is for. It also keeps several skills apart in one chat.
// the skill your AI runs on
You are Quirin, an LLM Gateway and Model Routing Engineer who labels thirty days of traffic by task class before writing a routing rule. You have been activated to own the control plane in front of every model call.
$4.92/mo, billed yearly. Works in Claude, ChatGPT, Claude Code, Codex and Cursor. Cancel anytime, 14-day refund on the first charge. After checkout we email your setup link.
Complete skill package instant downloadquirin-llm-gateway-routing-engineer.md
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Ask Quirin something hard.
Our LLM bill is unattributable and a provider update broke our output last month. Put a gateway in front of it.
CLAUDE · AS QUIRIN, LLM GATEWAY ENGINEER
Quirin returns a gateway architecture with credential isolation and PII redaction at the boundary, routing rules derived from a measured quality and cost comparison per task, a fallback chain with the failure modes stated, a caching design with invalidation rules, per-team quotas and spend controls, model and prompt version pinning, and a measured before-and-after on what routing actually saved.
Or have every skill inside your AI.
Questions before you buy? A person answers, usually the same day: hello@kissmyskills.com
// what's inside
What's inside this skill
- Gateway architecture, credential isolation and PII redaction
- Routing by task and quality tier with measured rules
- Fallback chains, caching with invalidation, backpressure
- Quotas, spend controls and model version pinning
Platform teams whose LLM spend is unattributable and whose product changed behaviour after a provider update.
What you're actually buying
Drop Quirin into Claude and get a gateway engineer who pins model versions so a provider update cannot silently change your product overnight.
Quirin owns the control plane in front of every model call: gateway architecture and why calls should never go direct to a provider; model routing by task, quality tier and cost with rules derived from measurement rather than guesswork; cascading and fallback chains across providers and regions; semantic and exact-match caching with invalidation; rate limit handling, queuing and backpressure; per-team and per-feature quotas and spend controls; API key management and credential isolation; request and response logging with PII redaction at the gateway; streaming pass-through and its complications; prompt and model version pinning; provider outage response and where a multi-provider abstraction leaks; and measuring what routing actually saved rather than what it was projected to save.
What you get
- →Gateway architecture, credential isolation and PII redaction
- →Routing by task and quality tier with measured rules
- →Fallback chains, caching with invalidation, backpressure
- →Quotas, spend controls and model version pinning
📄 quirin-llm-gateway-routing-engineer.skill
Under 2 min install
Works with Claude, ChatGPT & any AI chat
How to install
Download the .skill package → open Claude → paste SKILL.md into your Project Instructions or system prompt → describe your requirement → Quirin builds the answer. Includes a full worked example so you see exactly what you get.
// how to install
Under 2 minutes
Four steps. Any AI chat.
- 01Download the file
After checkout, the download link lands in your inbox. Save the file anywhere on your device.
- 02Open your AI chat
Claude, ChatGPT, Gemini, Grok, or Copilot - whichever one you already use.
- 03Paste the file contents
Drop it into the system prompt, Project instructions, or custom instructions field.
- 04Start working
Your AI is now configured as a specialist. Ask it anything inside its domain.
No technical knowledge required.
With Unlimited there is nothing to download. Connect your AI once, then just ask: "Load Quirin from KissMySkills."
// faq
Questions about this product
What does the Quirin skill do?+
Build the LLM gateway: route by measured quality and cost, cache and fall back safely, and pin versions so nothing shifts underneath you. Load it once into Claude Projects and you get a configured LLM Gateway & Model Routing Engineer without re-explaining context at the start of every session. Measure the model on your own data before trusting any public benchmark, keep a human in the loop wherever a wrong answer is expensive, and state the failure modes as plainly as the wins.
How do I install this skill file?+
Download the .skill package (it contains SKILL.md), paste the contents into Claude Projects Instructions or your AI's system prompt, add your own context and start your first session. Works with Claude, ChatGPT, or any AI chat that accepts system prompts.
Which AI tools does this skill work with?+
Works with Claude (recommended), ChatGPT, Gemini, Perplexity and Copilot, and any AI chat that accepts system prompts. Claude Projects gives the best results.
What is included in this download?+
One .skill package delivered instantly after purchase: the full SKILL.md role configuration plus a worked-example file with a real scenario so you see the quality before you rely on it. Pay once, keep forever, yours permanently.
How is this different from using Claude without the Quirin skill?+
Without a skill file your AI starts every session as a general assistant. With Quirin loaded it applies LLM Gateway & Model Routing Engineer methodology from the first message, with consistent quality every time. Measure the model on your own data before trusting any public benchmark, keep a human in the loop wherever a wrong answer is expensive, and state the failure modes as plainly as the wins.
Do I have to read it myself?+
No. The file is written for your AI to read, not for you. Upload it or paste it in once and the AI takes on the role. After that you just ask it questions the way you normally would. You're welcome to open it and read it, but nothing here depends on you doing that.