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query_body_measurements

Retrieve body measurements (weight, BMI, body fat, muscle mass, water percentage) for a date range. Filter by specific metrics or get only the latest record.

Instructions

Query body measurements (weight, body composition) for a date range

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
start_dateYesStart date (YYYY-MM-DD)
end_dateYesEnd date (YYYY-MM-DD)
metricsNoSpecific metrics to include
latest_onlyNoReturn only the latest measurement
Behavior2/5

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

With no annotations, the description carries full burden but only states basic purpose. It does not disclose whether data is aggregated, how latest_only works, or if pagination exists. The agent gets minimal behavioral insight beyond querying.

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

Conciseness4/5

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

The description is extremely concise at one sentence, effectively front-loading the core purpose. However, it sacrifices valuable detail, which prevents a perfect score.

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

Completeness2/5

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

Given no output schema and four parameters, the description is insufficient. It omits details on metrics selection, latest_only behavior, and return structure, leaving the agent with incomplete information for safe invocation.

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?

The input schema has 100% description coverage, so each parameter is already documented. The tool description adds no extra semantic value beyond 'for a date range,' which is redundant with the schema. Baseline 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 explicitly states the verb 'Query' and the resource 'body measurements (weight, body composition)' for a date range, clearly distinguishing from sibling tools like query_heart_rate or query_metric_series.

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

Usage Guidelines2/5

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

No guidance is provided on when to use this tool versus alternatives (e.g., query_metric_series). The description lacks any when-to-use or when-not-to-use instructions, forcing the agent to infer context.

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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