set_time_signature

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

There are no annotations, so the description carries the full behavioral burden. It only explains the parameter meanings and does not disclose whether the change is global, whether existing notes are affected, what valid ranges are, or what happens on invalid input.

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 brief, front-loaded with the purpose, and uses a clean Args section with no redundant filler. Every sentence contributes necessary information.

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?

For a simple two-parameter setter, the description covers the essential meaning of both parameters and the operation itself. It could be more complete with allowed ranges or global scope, but the low complexity and presence of an output schema make this adequate.

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 0%, so the parameter explanations in the description are essential. It adds real meaning by defining numerator as 'Beats per bar' with examples and denominator as 'Beat unit' with note-value examples, going beyond the bare integer schema.

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 the exact operation with a specific verb and resource: 'Set the time signature.' This is unambiguous and naturally distinguishes it from siblings like set_tempo or set_master_volume, since the resource is uniquely the time signature.

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 when to use the tool — whenever a time signature needs to be set — but does not explicitly state alternatives, exclusions, or contextual conditions. There is no direct comparison with related set_* tools.

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