Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
ClaudSkills / General / orchestration-frameworks

When Code When LLM

Category: General  ·  Sub-category: orchestration-frameworks  ·  Last updated:
ai:llm
Decision framework for choosing between deterministic code (regex, keyword match, AST parse, schema validation) and LLM-based processing (classification, semantic similarity, judge) for a single task. Use when you catch yourself writing a regex for a task that keeps producing false positives or negatives, or when you are about to call an LLM for something a three-line code check would handle. Covers the structural-vs-semantic axis, the false-positive test, worked examples of both directions, and the enumerate/decide split for tasks where detection is structural but resolution needs judgment.
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

Code and LLMs are not in opposition. They are different tools for different kinds of work, and the failure mode is not "picking the wrong side of a debate" — it is forcing one tool to do the other's job.

What this skill does

When Code When LLM is a community-contributed Claude Code skill in the orchestration-frameworks sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/when-code-when-llm/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when you catch yourself writing a regex for a task that keeps producing false positives or negatives, or when you are about to call an LLM for something a three-line code check would handle. Covers the structural-vs-semantic axis, the false-positive test, worked examples of both directions, and the enumerate/decide split for tasks where detection is structural but resolution needs judgment.

Who uses this skill

The When Code When LLM Claude Code skill is built for Claude Code users and developers across all disciplines looking for general-purpose AI assistance. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 152,000+ 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/when-code-when-llm
curl -L https://claudskills.com/skills/when-code-when-llm/SKILL.md \
  -o ~/.claude/skills/when-code-when-llm/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/when-code-when-llm/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/when-code-when-llm/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\when-code-when-llm\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.

See pricing → Download desktop app

Frequently asked questions

How do I install the When Code When LLM Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/when-code-when-llm/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the When Code When LLM skill do?
Decision framework for choosing between deterministic code (regex, keyword match, AST parse, schema validation) and LLM-based processing (classification, semantic similarity, judge) for a single task. Use when you catch yourself writing a regex for a task that keeps producing false positives or negatives, or when you are about to call an LLM for something a three-line code check would handle. Covers the structural-vs-semantic axis, the false-positive test, worked examples of both directions, and the enumerate/decide split for tasks where detection is structural but resolution needs judgment.
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 When Code When LLM skill?
Use When Code When LLM when your Claude Code task falls under the General category — specifically in the orchestration frameworks 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 When Code When LLM" or describe the task and let Claude pick). Browse related skills at /category/general/.
What is a Claude Code skill and how does the When Code When LLM 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. When Code When LLM is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the General 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
shimo4228. (2026). When Code When LLM [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/when-code-when-llm/
BibTeX
@misc{when-code-when-llm-2026,
  author    = {shimo4228},
  title     = {When Code When LLM [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/when-code-when-llm/}
}

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
[![ClaudSkills](https://claudskills.com/badge/when-code-when-llm.svg)](https://claudskills.com/skills/when-code-when-llm/?utm_source=badge&utm_medium=readme&utm_campaign=skill_badge)
<script>
<script src="https://claudskills.com/embed/when-code-when-llm.js" async></script>
<iframe>
<iframe src="https://claudskills.com/embed/when-code-when-llm.html" width="100%" height="160" frameborder="0" loading="lazy" title="ClaudSkills: When Code When LLM"></iframe>

Security scan

Grade A · scanned 2026-07-16 — 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 ›

Show this grade on your repo (click to copy):

[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/when-code-when-llm/#security)

Free. No spam. Unsubscribe in one click.

More General skills

Browse all General skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all General skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

Part of Acreator Store — Adam Lankamer's AI tools: PerfectStudio · Ucaption · UTagger · AutoXPoster · TestYourSkills · AutomationFlows · Au Naturel · Telegram @acreatorstore

Categories

Use cases

Popular tags

Learn

Site