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

No annotations are provided, so the description carries full burden. It describes a read operation ('Return') but does not explicitly state that it is read-only, safe, or lacks side effects. It also omits any mention of authorization requirements or rate limits, though the operation is likely safe.

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?

Single sentence, zero waste, front-loaded with action and subject. Every word 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?

The description is brief but adequate for a zero-parameter tool with an output schema present. It explains the purpose without needing to detail return values, as the output schema handles that. However, it could be slightly more explicit about the scope (e.g., 'current environment' might be vague).

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 has no parameters and schema coverage is 100%, so baseline is 4. The description adds no further parameter information, but none is needed.

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 clearly states it returns ProtoGen capabilities and current CAD environment status, using a specific verb ('Return') and resource ('ProtoGen capabilities and current CAD environment status'). With no parameters, the purpose is unambiguous and distinguishes it from sibling tools that perform actions like creating or exporting.

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 implies usage for getting information before performing other operations, but does not explicitly state when to use this tool vs. alternatives like 'health'. The context is clear given its zero-parameter nature, but no exclusions or alternative hints are provided.

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