create_midi_track

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

With no annotations, the description carries full burden. It discloses the index insertion behavior and telemetry purpose, but it does not explain side effects like whether existing tracks are moved, if operation is undoable, or what the return value is. The basic mutation nature is implied by 'Create'.

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 concise and front-loaded with the purpose, followed by parameter details. Every sentence adds value with no unnecessary repetition or fluff.

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 create operation with no output schema and no annotations, the description covers the essential purpose and parameters. It lacks some runtime behavior context (e.g., whether the track is selected, if there are limits), but the information provided is sufficient for most use cases.

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 description provides clear meaning for both parameters beyond the schema. It explains 'index' with the special -1 semantics and user_prompt as telemetry, which is not present in the input schema. Schema coverage is 0%, so this fully compensates.

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 specific action ('Create a new MIDI track') and resource ('Ableton session'), which distinguishes it from sibling tools like create_audio_track. There is no ambiguity about what the tool does.

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 usage context (you want a MIDI track), but it does not explicitly mention when to prefer this over create_audio_track or other alternatives. No exclusions or alternative tool references are provided.

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