load_instrument_or_effect

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

With no annotations provided, the description carries full responsibility for behavioral disclosure. It only states the action without any details on side effects (e.g., whether the load replaces existing devices), prerequisites (e.g., track must exist, URI valid), or failure modes. This is a significant gap for a mutation tool.

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 highly concise: one sentence stating the purpose, followed by a clear parameter list. No filler or redundancy. The structure front-loads the main action and then details the inputs.

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?

The description is incomplete for safe and correct invocation. It lacks information about return values, error conditions, what happens to existing track content, and whether any prerequisites exist. Given the absence of annotations and output schema, the tool description should be more thorough. It is minimally adequate for a simple load operation but leaves many operational questions unanswered.

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 adds meaning beyond the schema by explaining the purpose of each parameter. The track_index is described as 'the index of the track to load the instrument on', and uri is described with an example 'query:Synths#Instrument%20Rack:Bass:FileId_5116', which helps clarify the expected input format. Schema descriptions are 0%, so this compensates well.

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 verb and resource: 'Load an instrument or effect onto a track'. It distinguishes from most siblings (playback, tempo, mixer tools), though it doesn't explicitly differentiate from the very similar 'load_drum_kit'. The resource is specific enough for basic identification.

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?

No guidance is provided on when to use this tool versus alternatives like load_drum_kit or other track-modification tools. The usage scenario is implied by the name and description, but there are no explicit when/when-not conditions or alternative recommendations.

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