convert_area

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

Annotations already declare readOnlyHint=true, idempotentHint=true and destructiveHint=false, so safety is covered. The description adds nothing beyond that: no list of supported units, no unit-string syntax, no rounding or precision behavior, and no statement of what the call returns.

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 zero filler. It is efficient, though the terseness is what leaves the substantive gaps penalized elsewhere.

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 tool is mechanically simple (three required params, no output schema), but the real difficulty is the unconstrained unit identifiers, which the description never addresses. For a converter whose entire failure mode is an invalid unit string, this leaves an agent under-equipped to call it correctly.

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 0% and there are no enums, so the free-form 'from' and 'to' strings are completely undocumented. The description only reinforces that they are area units, but an agent still cannot know whether to pass 'sqft', 'ft2', 'square feet', or 'acre'.

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: 'Convert between area units.' The domain word 'area' implicitly separates it from convert_length, convert_volume, and convert_speed, so an agent can route on the name alone. It doesn't explicitly say what it is not, which keeps it just short of a 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 description gives no when-to-use guidance, no prerequisites, and never names an alternative despite living among at least a dozen sibling convert_* tools. Usage is only inferable from the name.

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