What is google-health?

A skill for answering personal health questions using locally stored Google Health and Fitbit data. It can work with information about sleep, recovery, activity, workouts, heart rate, and related dates.

Use it to review sleep or recovery, examine activity and workout patterns, inspect heart-rate records, and compare recent health data with personal baselines.

It brings health records together with relevant context while keeping the analysis focused on personal trends rather than assuming that one event caused a health change.

google-health — Skill for Claude Code and Codex by leo-pe2

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 leo-pe2/google-health-hermes-agent-mcp --skill google-health

Clone the repo

git clone --depth 1 https://github.com/leo-pe2/google-health-hermes-agent-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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/leo-pe2/google-health-hermes-agent-mcp/google-health/github.svg)](https://agentmods.dev/skills/leo-pe2/google-health-hermes-agent-mcp/google-health)

Your own site

<a href="https://agentmods.dev/skills/leo-pe2/google-health-hermes-agent-mcp/google-health"><img src="https://agentmods.dev/badge/skills/leo-pe2/google-health-hermes-agent-mcp/google-health/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/leo-pe2/google-health-hermes-agent-mcp/google-health"><img src="https://agentmods.dev/badge/skills/leo-pe2/google-health-hermes-agent-mcp/google-health.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,860 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.

Model	Per session	Once invoked
Fable 5.1	$0.00073	$0.01860
Opus 5.5	$0.00029	$0.00744
Sonnet 5.5	$0.00015	$0.00372
Haiku 4.5	$0.00007	$0.00186

Measured 2mo ago against content hash fb69a87d0274, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

google-health 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 2mo 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/google-health/SKILL.md · 183 lines

How it starts

The opening of the file, as written. The whole thing — 183 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Google Health Personal Context

Overview

Use the local google-health MCP server as the source of truth for Google Health and Fitbit-derived data. It provides both compact daily summaries and encrypted-at-rest, full-fidelity records such as timestamped heart-rate samples and sleep-stage segments.

Combine health data with other tools only when it answers the user's question. Keep the analysis descriptive, personal-baseline-aware, and privacy preserving. Health signals can be associated with events, but they do not establish that an event caused stress, illness, poor sleep, or any other condition.

Available MCP tools

Hermes may display these with an mcp_google_health_ prefix:

get_health_data_status: authorization, last successful sync, and local coverage.
get_health_data_catalog: supported data types, record counts, and date coverage.
get_daily_health_facts: daily sleep, recovery, activity, and 7/28-day comparisons.
get_daily_health_pulse: deterministic English daily summary.
get_health_history: normalized daily metrics for trend analysis.
get_health_records: full-fidelity records for inclusive calendar dates.
get_health_window: records overlapping an exact timestamped window.

The MCP is read-only. It cannot refresh Google data or alter the database.

Standard procedure

Call get_health_data_status.
Check last_successful_sync and detailed_last_date.
If current data is required and the database is stale, explain that a sync is needed. If terminal execution is available and the user has authorized the action, run healthctl sync; otherwise ask them to run it.
Start with the smallest useful query:
- Daily briefing: get_daily_health_facts.
- Multi-day trend: get_health_history.
- Discover available detailed streams: get_health_data_catalog.
- Specific day or sleep session: get_health_records.
- Calendar event or workout interval: get_health_window.
Request only relevant data types. Do not load every stream merely because it is available.
Paginate detailed records when has_more is true. Do not silently treat a truncated page as the complete result.
State missing data and sample-size limitations.

Read the full file on GitHub · 183 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.

2mo ago First seen · 183 lines · 73 tokens per session scan A fb69a87d0274

Subscribe to this mod's changes

google-health is a skill published in the GitHub repository leo-pe2/google-health-hermes-agent-mcp (3 stars, last pushed 4mo ago), licensed MIT. It adds 73 tokens to every session and 1,860 once invoked, about $0.0003 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 2026-08-31.

Scientific

google-health next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
google-healthleo-pe2/google-health-hermes-agent-mcp	Skill	3	4mo ago	MIT	A	73	Claude Code, Codex
instrument-data-to-allotropeanthropics/knowledge-work-plugins	Skill	35k	3d ago	Apache-2.0	A	123	Claude Code
exploratory-data-analysisK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	83	Claude Code
matlabK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	44	Claude Code
phylogeneticsK-Dense-AI/scientific-agent-skills	Skill	56k	4d ago	MIT	A	71	Claude Code, Codex
research-engineerdavila7/claude-code-templates	Skill	33k	yesterday	MIT	A	43	Claude Code, Codex
mapping-to-snomedmaziyarpanahi/openmed	Skill	5.8k	yesterday	Apache-2.0	A	205	Claude Code