set_metronome

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

With no annotations provided, the description carries the full burden of disclosing behavior. It indicates the tool mutates the metronome state (enable/disable), but it does not mention any side effects, required conditions, or return value behavior. For a simple boolean setter, this is adequate but not rich in behavioral detail.

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: a single sentence plus an Args block for the one parameter. Every word earns its place with no fluff or redundancy, making it highly scannable and efficient.

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 simplicity (one boolean parameter, clear purpose), the description is nearly complete. An output schema exists, so no need to explain return values. It could mention what happens if the metronome is already in the desired state or any related side effects, but for most use cases this is sufficient.

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 schema description coverage is 0%, so the description must compensate. It does so by explaining the 'on' parameter: 'True to enable, False to disable.' This adds clear semantic meaning beyond the schema's bare boolean type, fully covering the single parameter's purpose.

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 tool's purpose: 'Enable or disable the metronome.' It uses a specific verb and resource, and distinguishes itself from sibling tools like set_tempo or set_time_signature by targeting the metronome specifically.

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 tool is used when the user wants to control the metronome, but it does not explicitly state when to use it versus alternatives or provide context like prerequisites. Since there are no direct alternative tools for metronome control, the implied usage is acceptable but not clearly articulated.

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