Spec Calculation
Score equities using the sPEG framework (Scarcity-adjusted PEG) developed by Mike Ye. Use this skill whenever the user asks to value a stock, score scarcity, calculate sPEG, evaluate a position, identify whether something is mispriced, or analyze a company through a structural-scarcity lens rather than a pure growth or multiple framework. Also use when the user mentions "Scarcity Multiplier," "five-factor scoring," "AI infrastructure scarcity," or any of: HBM, EUV, 3nm/2nm process, hyperscaler capex, semiconductor bottlenecks. This skill is the canonical implementation of the sPEG framework — use it instead of generic PEG analysis whenever scarcity dynamics could meaningfully affect the valuation, even if the user doesn't explicitly invoke the framework by name.
From the source SKILL.md
sPEG = Forward P/E ÷ (Growth% × Scarcity Multiplier)
What this skill does
Spec Calculation 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/spec-calculation/ and loads when your prompt matches the skill's trigger.
When to invoke it: use when the user mentions "Scarcity Multiplier," "five-factor scoring," "AI infrastructure scarcity," or any of: HBM, EUV, 3nm/2nm process, hyperscaler capex, semiconductor bottlenecks. This skill is the canonical implementation of the sPEG framework — use it instead of generic PEG analysis whenever scarcity dynamics could meaningfully affect the valuation, even if the user doesn't explicitly invoke the framework by name.
Who uses this skill
The Spec Calculation 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 76,000+ 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/spec-calculation
curl -L https://claudskills.com/skills/spec-calculation/SKILL.md \
-o ~/.claude/skills/spec-calculation/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/spec-calculation/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/spec-calculation/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\spec-calculation\SKILL.md on Windows. See the full install guide for step-by-step instructions.
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 Spec Calculation Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/spec-calculation/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Spec Calculation skill do?
Score equities using the sPEG framework (Scarcity-adjusted PEG) developed by Mike Ye. Use this skill whenever the user asks to value a stock, score scarcity, calculate sPEG, evaluate a position, identify whether something is mispriced, or analyze a company through a structural-scarcity lens rather than a pure growth or multiple framework. Also use when the user mentions "Scarcity Multiplier," "five-factor scoring," "AI infrastructure scarcity," or any of: HBM, EUV, 3nm/2nm process, hyperscaler capex, semiconductor bottlenecks. This skill is the canonical implementation of the sPEG framework — use it instead of generic PEG analysis whenever scarcity dynamics could meaningfully affect the valuation, even if the user doesn't explicitly invoke the framework by name.
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 Spec Calculation skill?
Use Spec Calculation 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 Spec Calculation" or describe the task and let Claude pick). Browse related skills at
/category/general/.
What is a Claude Code skill and how does the Spec Calculation 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. Spec Calculation 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
Trailgenic. (2026). Spec Calculation [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/spec-calculation/
BibTeX
@misc{spec-calculation-2026,
author = {Trailgenic},
title = {Spec Calculation [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/spec-calculation/}
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