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

Annotations already declare readOnlyHint and openWorldHint=false, so the safety profile is covered. The description adds genuinely useful grounding behavior: answers are constrained to what the person published, telling the agent to expect possible non-answers instead of inference. Failure behavior for an unknown handle is still unstated.

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 action, the subject, and the input key in order, followed by a short grounding clause. Every element earns its place; 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?

For a two-parameter read tool with no output schema, the description covers what the agent supplies and what the answer is based on. The remaining gap is what happens when the profile lacks the answer or the handle is invalid.

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 coverage is 100%, with both handle formats and the question length already documented in the schema. The description restates the handle and question intent plus topical examples but adds no format or syntax detail beyond the schema, so 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 + resource ("ask one short factual question about a person's professional background") and names the lookup key (Tazilo profile URL or handle). It only implicitly separates itself from get_profile via the narrow "one short factual question" scope, rather than calling out the sibling.

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?

Gives concrete usage context: one short factual question, examples of acceptable topics (leadership, launches, tools), and a source restriction. It does not explicitly say when to prefer get_profile over ask, so exclusions are absent.

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