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davidmosiah

Google Health MCP

by davidmosiah

Google Health Weekly Review

google_health_weekly_summary
Read-onlyIdempotent

Build a weekly health scorecard combining activity, sleep, and heart data from Google Health. Includes comparison to prior weeks and flags missing data.

Instructions

Build a weekly Google Health scorecard with activity, sleep, heart context and missing-data awareness. Read-only, beta, non-medical.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
daysNoRecent analysis window in days.
compare_daysNoPrior comparison window in days. Use 0 to disable comparison.
timezoneNoIANA timezone used only for display, e.g. America/New_York.UTC
response_formatNomarkdown

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
kindYes
generated_atYes
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already declare readOnlyHint and idempotentHint. The description adds valuable context: 'beta' (indicating potential instability) and 'non-medical' (not for diagnosis). This goes beyond the structured annotations and provides practical boundaries.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence that front-loads the core purpose and key qualifiers. Every word earns its place; no fluff.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a tool with an output schema and rich annotations, the description covers the essential purpose, scope, and behavioral notes (beta, non-medical, missing-data awareness). It is complete enough for an agent to invoke correctly.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Input schema has 100% coverage (all four parameters have descriptions). The description adds no parameter-specific information beyond the schema, so baseline score of 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose: building a weekly Google Health scorecard with specific metrics (activity, sleep, heart context) and missing-data awareness. It explicitly distinguishes from siblings by specifying 'weekly' and listing the metrics.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies weekly usage via the name and mention of 'weekly', but it does not explicitly state when to use this tool versus daily alternatives like daily_summary or daily_rollup. Missing explicit when-to-use/when-not-to-use guidance.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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