vna_measure_insertion_loss

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

With no annotations, the description carries the full burden of behavioral disclosure, but it only states the basic measurement action. It does not reveal whether the tool mutates state, requires prior setup, triggers a sweep, or what response format to expect.

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 a single, short sentence that is front-loaded with the key action and target. It is concise without being padded, though it could potentially include a bit more context without losing its efficiency.

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 has 3 parameters, no annotations, and no output schema, yet the description provides only a minimal one-line statement. Given the complexity of the VNA toolset and the presence of many related siblings, this description is insufficient for an agent to fully understand expected behavior, return values, or setup requirements.

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 low (only 33% describing frequency_hz). The description adds context that frequency_hz determines the measurement frequency, but it provides no additional meaning for the 'host' or 'port' parameters, which remain undocumented in both schema and description.

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 the verb 'Measure' and the resource 'insertion loss (S21)' at a specific frequency. It distinguishes itself from sibling tools like vna_measure_return_loss and vna_measure_vswr by explicitly naming the S-parameter (S21) and the measurement type.

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?

No explicit guidance is provided on when to use this tool versus alternatives. The description implies usage for a single frequency point, but it does not mention any prerequisites (e.g., connection, calibration) or contrast with sweep-based measurements or sibling tools.

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