set_song_root_note

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

No annotations are provided, so the description carries the burden of behavioral disclosure. It states the action clearly but does not mention side effects, prerequisites, or whether existing notes are affected. The hint to pair with `set_song_scale` adds some context, but overall it lacks deeper 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 two sentences plus a compact parameter list. The main action is front-loaded, and every word earns its place without unnecessary elaboration.

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 setter with one parameter and no output schema, the description is nearly complete: it explains the parameter and its role in setting the key. It does not discuss side effects, but the tool's simplicity makes that less critical. The only modest gap is the absence of any note about whether existing notes are transposed or if it affects the current project only.

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 input schema has zero description coverage, but the description fully compensates by mapping root_note values to note names (0=C, 1=C#, ... 11=B). This provides exactly the missing meaning and makes the parameter self-explanatory.

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 ('Set'), names the resource ('song's root note'), and distinguishes itself from the sibling `set_song_scale` by explicitly saying to pair with it for setting the key. This makes the tool's purpose immediately clear and differentiates it from related tools.

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 usage context by recommending pairing with `set_song_scale` to set the key, which clarifies when this tool should be used. It does not explicitly mention when not to use it, but there are no competing tools for root note, so the guidance is adequate.

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