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

The annotations already declare destructiveHint=true, and the description adds no behavioral context beyond that. It does not disclose that the education and experience arrays fully replace existing lists, nor what happens when no parameters are supplied.

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 no wasted words. The verb and resource come first, followed by a concise list of the updateable areas.

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?

The schema and annotations carry most of the burden: all parameters are described, destructive behavior is flagged, and an output schema is present. Still, the description alone leaves ambiguity around partial updates, full replacement semantics for education/experience, and the lack of required parameters.

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?

Input schema coverage is 100%, so the schema already documents all parameters thoroughly. The description's field list loosely maps to the schema (location→address, name→firstname/lastname) but adds little semantic value beyond what the schema provides.

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 states a specific verb ('Update') and a clear resource ('your candidate profile'), then enumerates the touched fields: name, phone, location, education, and work experience. It is obviously distinct from the read-only sibling get_my_profile, though it does not explicitly name that alternative.

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: use this tool when the candidate's profile fields need to be changed. However, there is no explicit 'when to use' guidance, no mention of get_my_profile for reading current data first, and no warning about whether omitted fields are preserved or cleared.

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