get_full_snapshot

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

With no annotations available, the description must disclose behavioral traits. It only says 'snapshot' which implies a read-only aggregate, but it does not describe what data is fetched, whether it is expensive, how the load_days and activity_days parameters affect the result, or what the response structure looks like.

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

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

The one-sentence description is technically concise, but it is under-specified and acts as a vague label rather than an informative summary. It uses words that sound comprehensive without actually conveying any concrete details, so the space is not well utilized.

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

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

For an aggregation tool that could replace many sibling calls, the description is severely incomplete. It lacks scope details, parameter semantics, usage context, and relationship to the sibling tools. The existence of an output schema does not compensate for the missing behavioral and usage guidance.

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

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

Schema description coverage is 0% and the description does not explain load_days or activity_days. The parameter names hint at time ranges, but the agent cannot determine their precise meaning, acceptable units, or how they alter the snapshot without additional documentation.

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

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

The description 'Comprehensive Garmin data snapshot for holistic analysis' conveys an all-encompassing data retrieval, but it lacks an explicit action verb and doesn't specify which data domains are included. It does not meaningfully distinguish itself from sibling tools like get_sleep or get_stress, other than by the generic 'full' label.

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

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 instead of or in combination with the sibling tools. The description does not mention scenarios such as 'when you need all data at once' or contrast with single-domain tools.

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