get_user_profile

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

With no annotations, the description carries the full burden of disclosing behavior. It only lists output fields and provides no explicit statement about read-only nature, authentication requirements, data source, or lack of side effects. This is minimal transparency beyond the obvious.

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 description is a single concise phrase that front-loads the resource and lists the key fields. It avoids wasted words, but it is a fragment rather than a complete sentence, which slightly reduces structure quality.

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 a zero-parameter tool with no output schema, the description's field list partially compensates, but it lacks explicit context about whether this is the current authenticated user's profile and how it differs from get_user_settings. The description is minimally serviceable but not complete.

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?

The tool has zero parameters and the schema is empty, so the description has no parameter semantics to add. Per the rubric, 0 params earns a baseline of 4; the description adequately avoids inventing parameter-related details.

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 clearly identifies the resource (Garmin user profile) and enumerates the fields it returns (name, email, age, sex, height, location), so an agent can understand what the tool provides. However, it is a noun phrase rather than a verb-phrase like 'Gets the...', and it does not explicitly distinguish itself from the sibling get_user_settings.

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?

There is no guidance about when to use this tool versus alternatives such as get_user_settings or other profile-adjacent tools. The description implies retrieval of basic profile data, but it never states a condition, exclusion, or preferred alternative.

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