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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world, so the safety profile is fully covered. The description adds value beyond that by specifying 'public profile' (only public data is exposed) and by enumerating the fields returned, which matters because there is no output schema. It does not state what happens when the handle is unknown, a minor remaining gap.

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 front-loaded sentence with the verb and lookup key first, followed by the returned fields. Every clause earns its place and there is 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 one required parameter, full schema coverage, and no output schema, the description carries the burden of describing the return value — which it does by listing the profile fields. The only missing piece is error behavior for a nonexistent handle, which is minor for a simple read tool.

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 100%, and the handle parameter already documents the optional '@' prefix and gives an example. The description only restates 'by handle', adding no new syntax or constraint information, so the baseline 3 applies.

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?

States a specific verb and resource ('Get a maker's public profile') and scopes it 'by handle', which implicitly separates it from the sibling search_makers. It enumerates the returned content (display name, tier, badges, stats, job availability, shop links), so an agent knows exactly what data comes back. It stops short of naming a sibling explicitly, keeping it at 4 rather than 5.

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?

The 'by handle' phrasing implies the usage condition: you already know a specific maker's handle and want their details rather than a search. No explicit when-to-use, when-not, or alternative (e.g. search_makers for discovery) is stated, so guidance is only implied.

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