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intervals-icu-mcp: Skill for Claude Code

.agents/skills/cardiac-drift/SKILL.md

cardiac-drift is a skill for Claude Code, Codex from hadidwirsty/intervals-icu-mcp. It costs 46 tokens per session (610 once invoked), scanned A, original, MIT.

A workout analysis tool that compares heart rate with power or running speed in the first and second halves of a run or ride. It measures aerobic efficiency and cardiac drift, meaning how much performance falls as the session continues.

In plain words
What is it for?
Use it to review endurance efficiency and see whether heart rate rose relative to power or speed during an activity.
Why use it?
It helps identify whether the body had to work harder to maintain the same output later in the session.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is hadidwirsty/intervals-icu-mcp's own configuration. It tells Claude Code and Codex how to work on intervals-icu-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything intervals-icu-mcp configures →

not rated 1repo 2d ago A scan 46 tokens original MIT
View source ↗ hadidwirsty/intervals-icu-mcp
Reuse

Borrowing it

Nothing to install: this file belongs to hadidwirsty/intervals-icu-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/hadidwirsty/intervals-icu-mcp/main/.agents/skills/cardiac-drift/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/hadidwirsty/intervals-icu-mcp

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for cardiac-drift

README.md
[![agentmods](https://agentmods.dev/badge/skills/hadidwirsty/intervals-icu-mcp/cardiac-drift/github.svg)](https://agentmods.dev/skills/hadidwirsty/intervals-icu-mcp/cardiac-drift)
Your own site
<a href="https://agentmods.dev/skills/hadidwirsty/intervals-icu-mcp/cardiac-drift"><img src="https://agentmods.dev/badge/skills/hadidwirsty/intervals-icu-mcp/cardiac-drift/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.

agentmods 80×15 button for cardiac-drift

Your own site · 80×15
<a href="https://agentmods.dev/skills/hadidwirsty/intervals-icu-mcp/cardiac-drift"><img src="https://agentmods.dev/badge/skills/hadidwirsty/intervals-icu-mcp/cardiac-drift.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 46 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 610 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00046 $0.00610
Opus 5 $0.00023 $0.00305
Sonnet 5 $0.00009 $0.00122
Haiku 4.5 $0.00005 $0.00061

Measured 2d ago against content hash 255cbc0f09d0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

cardiac-drift 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 2d 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.

.agents/skills/cardiac-drift/SKILL.md · 44 lines

What it actually says

Skill: /cardiac-drift

Skill ini digunakan untuk menganalisis efisiensi aerobik (Efficiency Factor) dan penurunan performa kardiovaskular (Cardiac Drift) dari sesi latihan lari atau sepeda.

1. Langkah Pengambilan Data via MCP

  1. Panggil MCP Tool get_activities untuk menemukan ID aktivitas lari/sepeda terkini.
  2. Panggil MCP Tool get_activity_streams dengan parameter keys: ["heartrate", "watts", "velocity_smooth"].
  3. Penentuan Stream Beban (Power vs Speed):
    • Mode Power (Default): Jika stream watts tersedia dan memiliki data (>0), gunakan array watts sebagai powerOrSpeedStream (satuan EF: Watt/bpm).
    • Mode Pace / Speed (Fallback): Jika atlet lari tanpa sensor daya / power meter (watts kosong atau bernilai nol), gunakan array velocity_smooth sebagai powerOrSpeedStream (satuan EF: (m/s)/bpm).
  4. Panggil MCP Tool analyze_cardiac_drift:
    • Argument: { heartrateStream, powerOrSpeedStream }
    • Dapatkan: efHalf1, efHalf2, decouplingPct, status, dan advice.

2. Format Respons Laporan Cardiac Drift

### ⚡ Aerobic Decoupling & Cardiac Drift Report

**Status Decoupling**: [status] | **Decoupling Rate**: [decouplingPct]%

#### 1. Metrik Efisiensi Aerobik (EF)
- **Efficiency Factor Paruh 1 (H1)**: [efHalf1]
- **Efficiency Factor Paruh 2 (H2)**: [efHalf2]
- **Perubahan Efisiensi**: [decouplingPct]%

#### 2. Evaluasi & Panduan Fisiologis
- **Klasifikasi**: [status] ([advice])
- **Rekomendasi**:
  * If `< 3.0%`: Aerobic engine sangat solid & efisien. Lanjutkan progresivitas volume.
  * If `3.0% - 5.0%`: Normal & terkendali. Pertahankan strategi nutrisi & hidrasi.
  * If `> 5.0%`: Cardiac drift tinggi. Evaluasi hidrasi, suhu lingkungan, atau kurangi durasi Long Run berikutnya.
Changes

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.

  1. 2d ago First seen · 44 lines · 46 tokens per session scan A 255cbc0f09d0

Subscribe to this mod's changes

cardiac-drift is a skill published in the GitHub repository hadidwirsty/intervals-icu-mcp (1 stars, last pushed 2d ago), licensed MIT. It adds 46 tokens to every session and 610 once invoked, about $0.0002 per session on Opus 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 2026-09-10.

Analytics and metricsScientific
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