get_coverage_report

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

There are no annotations, so the description carries the full burden of behavioral disclosure. It only says 'Report live Blender coverage' without stating what the report contains, whether it is read-only, the nature of 'live' data, or any side effects. This is insufficient for a tool with zero annotation support.

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 deceptively short—one sentence with no wasted words—but this is under-specification rather than effective conciseness. It omits critical context and fails to front-load useful information. The brevity harms clarity rather than enhancing it.

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 zero-parameter simplicity and the existence of an output schema (which we cannot see), the description still fails to define what 'coverage' means or how the output should be interpreted. Without annotations, it is incomplete for an agent to use correctly. The description provides minimal context beyond the tool's name.

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 zero parameters, so the schema provides no parameter documentation to compensate for. Per the rubric, a baseline of 4 is appropriate when there are no parameters to explain. The description does not need to add parameter semantics.

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 'Report live Blender coverage' with a clear verb and resource, but 'coverage' is ambiguous and undefined. It does not distinguish this tool from siblings like 'ping_blender' or status checkers. The name and description essentially restate each other with minimal added meaning, making the purpose vague.

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 on when to use this tool versus alternatives. No context, no exclusions, and no mention of related tools. The description offers nothing to help an agent decide when to call this function.

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