modbus_rtu_timing

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

With no annotations provided, the description carries the full burden. It does specify the outputs (character time and silence intervals) but does not mention whether the operation is safe, deterministic, or if there are any side effects. Since it's a calculation tool, the lack of harm disclosure is less critical, but more detail on the calculation behavior would be helpful.

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, focused sentence, front-loaded with the action verb. It contains zero redundant words and efficiently communicates the tool's purpose, earning the highest score for conciseness.

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 relatively simple, and an output schema exists (as per context signals), so return values are likely covered there. However, the description lacks context on when to use this timing calculation, units of the result, or any prerequisite knowledge. It is minimally viable but leaves some gaps.

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 description mentions no parameters whatsoever. The schema has 0% description coverage, meaning the parameter names (parity, baudrate, data_bits, stop_bits) are only given with types and defaults, not meanings. The description fails to explain how these parameters affect the calculation, which is a significant gap for a 4-parameter tool.

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 uses a specific verb 'Calculate' and clearly identifies the resource: 'Modbus RTU character time and silence intervals.' This clearly distinguishes it from the sibling tools, which are all connection, measurement, and analysis tools, making the tool's unique purpose evident.

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 the usage context: when you need to determine Modbus RTU timing parameters. It doesn't explicitly state when not to use it or mention alternatives, but given there are no similar timing tools among the siblings, this is clear enough. No exclusions are needed.

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