create_midi_item

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

Annotations already indicate 'destructiveHint: true'. The description adds that the tool 'returns a stable take identity', which is useful for subsequent operations. However, it does not disclose other behavioral traits like overwriting behavior or required permissions.

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 a single efficient sentence (13 words), front-loaded with the action. Every word contributes meaning, and there is no redundancy.

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 tool with 3 parameters and an output schema, the description covers the core behavior but omits edge cases like whether existing items are overwritten or if the track must exist. The mention of a stable identity partially compensates, but gaps remain.

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?

With 0% schema description coverage, the description carries the full burden. It explains that the tool operates 'over a bar range' (linking to start_bar and length_bars) and implies the track parameter, but it does not provide data types, constraints, or examples, leaving significant ambiguity.

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 action ('Create'), the resource ('a MIDI item/take'), and the scope ('over a bar range'). It distinguishes itself from siblings like 'create_track' and 'insert_midi_notes' by focusing on creating a new MIDI item as a container for notes.

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 for creating a MIDI item on a track within bar boundaries, but it does not provide explicit guidance on when to use this tool versus alternatives, nor does it mention prerequisites or when not to use it.

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