cad_status

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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so safety and repeatability are covered. The description's useful addition is enumerating the two backend modes it can report, but it discloses nothing further about how the status is obtained or any failure modes (e.g. what happens when no drawing is open).

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 that lists exactly the three pieces of state returned, with no filler. Every clause earns its place.

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 zero parameters, rich annotations, and an existing output schema, the description covers the essential behavioral surface; return-value detail is rightly left to the schema. Only the absence of any usage context or sibling differentiation keeps it short of complete.

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?

The tool takes zero parameters, so there is no parameter semantics to document; the baseline for parameterless tools applies. The description correctly avoids inventing any argument behavior.

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 names a specific verb (report) and exactly what is reported: active backend (AutoCAD via COM vs headless DXF), connection state, and open drawing. That is far more specific than the bare name, though it never explicitly distinguishes itself from the sibling get_drawing_info, which an agent might reasonably confuse it with.

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 only implied — an agent can infer this is a diagnostic probe to run before other CAD operations, but the description gives no when-to-use statement, no prerequisites, and does not point to or away from any of the 38 sibling tools. Adequate but with a clear gap.

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