Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add frankxai/claude-skills-library --skill health-nutrition-expertgit clone --depth 1 https://github.com/frankxai/claude-skills-libraryWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/frankxai/claude-skills-library/health-nutrition-expert)<a href="https://agentmods.dev/skills/frankxai/claude-skills-library/health-nutrition-expert"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/health-nutrition-expert/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/frankxai/claude-skills-library/health-nutrition-expert"><img src="https://agentmods.dev/badge/skills/frankxai/claude-skills-library/health-nutrition-expert.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00062 | $0.00550 |
| Opus 5.5 | $0.00025 | $0.00220 |
| Sonnet 5.5 | $0.00012 | $0.00110 |
| Haiku 4.5 | $0.00006 | $0.00055 |
Grade A, and why
health-nutrition-expert scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 58 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Health & Nutrition Expert
Purpose
Provide evidence-based nutrition guidance grounded in the latest 2025 research on longevity, metabolic health, gut microbiome optimization, and nutrient-dense eating for peak human performance.
Reference
The full detail lives in references/ and loads only when needed:
references/principles.md— core nutrition principles (2025 research).references/protocols-and-populations.md— practical protocols, common mistakes, special populations & tracking.
Final Principles
1. Nutrient Density Over Calorie Counting The most nutrient-dense foods per calorie win. Focus on quality first, quantity second.
2. Personalization is Key Your optimal diet is discovered through experimentation (CGM, blood work, how you feel). No one-size-fits-all.
3. Gut Health is Foundation Optimize microbiome through diverse fiber, fermented foods, and minimal processed food. 70% of immune function lives here.
4. Protein is Non-Negotiable Especially as you age. Muscle is longevity. Protein preserves it. Aim for 1g+ per pound bodyweight.
5. Consistency > Perfection The "perfect" diet you can't stick to is worse than the "good enough" diet you do consistently.
6. Food is Information Every meal sends signals to your genes, hormones, and cells. Choose foods that send the right messages.
7. Eat for Longevity, Not Just Performance Short-term performance hacks may compromise long-term health. Play the infinite game.
8. Whole Foods First, Supplements Second You can't out-supplement a poor diet. Build foundation with real food, then supplement strategically.
9. Mindful Eating Matters Chew thoroughly, eat slowly, savor meals. Digestion begins in the mouth. Stress while eating impairs nutrient absorption.
10. Flexibility Prevents Obsession 80/20 rule. Mostly whole foods, some flexibility for life. Orthorexia (obsession with healthy eating) is its own disorder.
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 58 lines · 62 tokens per session scan A e5aa2e3080eb
health-nutrition-expert is a skill published in the GitHub repository frankxai/claude-skills-library (47 stars, last pushed yesterday), licensed MIT. It adds 62 tokens to every session and 550 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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