coach

coach is a skill for Claude Code, Codex from mycelium-hq/ai-brain-starter. It costs 103 tokens per session (3,163 once invoked), scanned A, original, MIT.

A personal fitness and longevity coach for planning training from health information such as sleep, recovery, exercise history, and lab results.

In plain words
What is it for?
Use it to get today's workout, create a weekly or longevity plan, record a completed workout, or review progress on a lift. It can optionally add workouts to a calendar.
Why use it?
It helps choose training that fits the person's current condition instead of following a fixed workout plan. It also keeps progression and planned easier weeks in view.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Part of the ai-brain-starter plugin — 38 skills, 17 commands, 3 agents, 1 hook shipped together

Good fit Use it to get today's workout, create a weekly or longevity plan, record a completed workout, or review progress on a lift. It can optionally add workouts to a calendar.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mycelium-hq/ai-brain-starter/coach
Install

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.

Any agent
npx skills add mycelium-hq/ai-brain-starter --skill coach
Clone the repo
git clone --depth 1 https://github.com/mycelium-hq/ai-brain-starter

Made for: Claude Code, Codex.

Or install ai-brain-starter, the plugin that ships this one along with the rest of its 38 skills, 17 commands, 3 agents, 1 hook.

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 coach

README.md
[![agentmods](https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/coach/github.svg)](https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/coach)
Your own site
<a href="https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/coach"><img src="https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/coach/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 coach

Your own site · 80×15
<a href="https://agentmods.dev/skills/mycelium-hq/ai-brain-starter/coach"><img src="https://agentmods.dev/badge/skills/mycelium-hq/ai-brain-starter/coach.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,163 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00103 $0.03163
Opus 5 $0.00051 $0.01581
Sonnet 5 $0.00021 $0.00633
Haiku 4.5 $0.00010 $0.00316

Measured 10d ago against content hash cc2e284d3261, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

coach 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 10d 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.

skills/coach/SKILL.md · 226 lines

How it starts

The opening of the file, as written. The whole thing — 226 lines — stays where its author put it; the contents beside it link to each section on GitHub.

coach, the longevity + fitness coach

Reads everything health-mcp knows (recovery, sleep score, sleep regularity, cycle phase, somatic state, longevity panel, out-of-range labs, Floor from today's journal) and issues a prescription that's specific to THIS person on THIS day. Progressive overload tracked per-lift. Deload every 4th week. Calendar drop optional.

This is the substrate's coach SURFACE. The DATA + DECISION layer lives in services/health-mcp/coach.py. The VOICE + WORKOUT TEMPLATES + CALENDAR INTEGRATION live here.

When to use

  • User says /coach, /coach today, /coach week, /coach profile, /coach log
  • User asks "what should I do today" / "give me a workout" / "build me a week" / "how should I train"
  • User wants a longevity plan
  • User wants to log a completed workout (RPE + lift actuals)
  • User wants to see progression on a specific lift
  • Scheduled morning task fires to drop today's workout into calendar

Do NOT use for:

  • Importing health data (use /ingest-health or /health-setup)
  • Querying past biometrics without prescribing (use health_status, health_metric_series)
  • Building new wearable connectors (substrate dev task)

First time: profile setup

When /coach profile runs (or /coach runs and no profile exists), ask the user these 12 questions and save the answers to <vault>/Meta/coach-profile.yaml. Never re-ask once saved unless they say something changed.

  1. Primary goal: lose weight, build muscle, run a 5K, get more active, reduce stress, improve mobility, train for a specific event, body recomp, longevity
  2. Secondary goal: optional
  3. Equipment: full gym, home dumbbells, barbell + rack, bodyweight only, resistance bands, kettlebells, pull-up bar, cardio machines (multi-select)
  4. Days/week realistic: 3 / 4 / 5 / 6
  5. Session length: 20 / 30 / 45 / 60 min
  6. Time of day: morning / lunch / evening (this affects calendar drop)
  7. Injuries / limitations / chronic conditions / movements to avoid: free text
  8. Current fitness level: complete beginner / beginner / intermediate / advanced
  9. Exercises hated: free text
  10. Exercises loved: free text
  11. Floor sensitivity: how much does emotional state shape what training feels right? (low / medium / high) — affects how much weight to give to today's Floor tag
  12. Longevity priorities: which Attia-style markers matter most? (VO2Max, Zone 2 minutes, lean mass, walking steadiness, sleep regularity, fasting insulin / HbA1c — multi-select)

Read the full file on GitHub · 226 lines

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. 10d ago First seen · 226 lines · 103 tokens per session scan A cc2e284d3261

Subscribe to this mod's changes

coach is a skill published in the GitHub repository mycelium-hq/ai-brain-starter (36 stars, last pushed yesterday), licensed MIT. It adds 103 tokens to every session and 3,163 once invoked, about $0.0005 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 2026-08-31.

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