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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds that the returned view is the student-facing public representation and lists the fields included, which is useful behavioral context beyond the annotations. It does not cover edge cases such as missing or unpublished profiles.

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?

A single compact sentence that front-loads the resource and parenthetically lists the returned fields. Every element earns its place with no filler.

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?

With zero parameters, annotations covering safety, and no output schema, the description provides enough context by naming the resource and its constituent fields. It could go further by clarifying whether this reflects the live published state or whether an unpublished profile returns an error, but the core information is present.

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 takes zero parameters, which is the baseline case for a score of 4. The description appropriately does not invent parameter details and instead focuses on what the no-argument call returns.

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 states the resource (the trainer's public page) and enumerates its contents (bio, specialties, photos, link). The phrase 'as students see it' distinguishes this read-only public view from related profile tools, though it does not explicitly name siblings like get_my_profile or update_public_profile.

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?

Usage is implied by 'as students see it', suggesting this returns the publicly visible profile rather than the editable/private one. However, there is no explicit guidance on when to use this instead of get_my_profile, get_public_profile_stats, or check_public_link, leaving the agent to infer the distinction.

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