Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/asachs01/nutrition-mcpnpx agentmods add skills/asachs01/nutrition-mcp/skillWrote 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/asachs01/nutrition-mcp/skill)<a href="https://agentmods.dev/skills/asachs01/nutrition-mcp/skill"><img src="https://agentmods.dev/badge/skills/asachs01/nutrition-mcp/skill/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/asachs01/nutrition-mcp/skill"><img src="https://agentmods.dev/badge/skills/asachs01/nutrition-mcp/skill.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 | $0.00000 | $0.00442 |
| Opus 5 | $0.00000 | $0.00221 |
| Sonnet 5 | $0.00000 | $0.00088 |
| Haiku 4.5 | $0.00000 | $0.00044 |
Grade A, and why
skill 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 9d 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.
What it actually says
Nutrition MCP Server
USDA FoodData Central integration for nutrition lookup, meal logging, and macro tracking.
Server
cd nutrition-mcp && node src/server.js
Requires USDA_API_KEY env var (free at https://fdc.nal.usda.gov/api-key-signup).
Common Workflows
Search for a food and get details
nutrition { action: "search", query: "chicken breast" }→ get fdcId from resultsnutrition { action: "get", fdcId: "171477" }→ full macro breakdown
Log a meal
- Search for the food (above)
meal_log { action: "log", fdcId: "171477", servings: 1, mealType: "lunch" }
Check daily progress
targets { action: "set", calories: 2000, protein: 150, carbs: 200, fat: 65, fiber: 30 }(one-time)targets { action: "progress" }→ shows consumed vs remaining
Compare foods
nutrition { action: "compare", fdcIds: ["171477", "171078"] }→ side-by-side macros
View meal history
meal_log { action: "daily_summary" }→ today's totals by mealmeal_log { action: "weekly_summary" }→ weekly averagesmeal_log { action: "list", date: "2025-01-15" }→ all entries for a date
Storage
- Logs:
~/.nutrition-mcp/logs/YYYY-MM.json - Targets:
~/.nutrition-mcp/targets.json - Cache:
~/.nutrition-mcp/cache/(24h TTL)
Nutrient IDs Reference
Energy=1008, Protein=1003, Fat=1004, Carbs=1005, Fiber=1079, Sugar=2000, Sodium=1093, Cholesterol=1253
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.
- 9d ago First seen · 44 lines · 0 tokens per session scan A acadfba470e8
skill is a skill published in the GitHub repository asachs01/nutrition-mcp (0 stars, last pushed 7mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 442 tokens. 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 2026-08-31.
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