create_midi_track_with_instrument

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

No annotations are provided, so the description must bear the burden of behavioral disclosure. It reveals that the operation is combined and faster, and advises sequential loading. However, it does not disclose potential failure modes, side effects, or whether the tool is destructive. It adds some context but is not fully comprehensive.

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 four sentences, all essential: purpose, benefit, usage tip, and caution. No redundant or irrelevant content. Front-loaded with the core action.

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 presence of an output schema, return value details are not needed. The description covers the main use case and provides a critical caution. However, it lacks explanation of the 'uri' parameter and does not mention any prerequisites or error scenarios. Still, it is largely complete for a combined operation tool.

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 0%, but the description explains the index parameter ('Use index=-1 to append at the end') and the name parameter ('Optionally set the track name'). It does not describe the required 'uri' parameter, which is critical. This provides some but incomplete compensation for the low schema coverage.

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 action: 'Create a new MIDI track and load an instrument in a single operation.' It distinguishes from sibling tools like create_midi_track and load_instrument_or_effect by explicitly noting it is a combined, faster alternative.

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 explicitly recommends this tool over separate calls for speed. The warning 'load instruments sequentially, not in parallel' provides behavioral guidance. However, it doesn't explicitly state when to avoid this tool (e.g., if you only need a track without an instrument).

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