get_full_name

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only says 'get', which implies read-only, but gives no explicit statements about characteristics such as authentication requirements, whether the data is always available, or any side effects. For a getter, this is minimal; no extra behavioral concerns are revealed.

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 one short sentence with no filler. It is fully front-loaded and every word earns its place. For a zero-parameter getter, this is appropriately concise.

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?

Given the tool's simplicity (0 params) and the existence of an output schema, the description is basically complete for invoking the tool. The only gap is the lack of usage guidance and differentiation from similar siblings, but as a simple getter, the description sufficiently conveys the operation. It does not need to explain return values because an output schema exists.

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?

There are zero parameters in the schema, so the baseline is 4. The description adds minor context by noting the source 'from profile', but otherwise the action is fully defined by the name. No additional parameter semantics are needed because there are none.

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 exactly what it does with a specific verb and resource: 'Get user's full name from profile'. It clearly distinguishes itself from sibling tools like get_user_profile, which would return the full profile, not just the full name. This is a precise, unambiguous getter.

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. The description does not mention on the many sibling getters that could provide the full name (e.g., get_user_profile, get_user_summary) or when this specific tool is preferable. The agent receives no context for selection.

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