set_serial_update_rate_hz

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

No annotations are provided, so the description must disclose behavioral traits. It fails to mention whether changing the rate takes effect immediately, requires a reboot, or affects ongoing serial communication. The description is purely technical without operational context.

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 extremely concise: one sentence and a bracket note. It is front-loaded with the action and resource, and every word is informative without redundancy.

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 simplicity of the tool (single parameter, no output schema), the description is mostly complete. However, it lacks behavioral context such as whether the setting is applied dynamically or requires a restart, which would help the agent understand side effects.

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 coverage is 100%, so baseline is 3. The description repeats the range from the schema but adds the default value (100) which is absent from the schema, providing slight additional value.

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 action 'Set' on the resource 'serial_update_rate_hz' and explains it controls the rate of MSP/CLI serial output processing. This distinguishes it from the get_serial_update_rate_hz sibling tool.

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 provides a valid range and default value, implying when to use the tool (to change the rate). However, it does not explicitly state when not to use it or mention alternatives like the getter or other rate-setting tools.

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