mixer_count

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

No annotations are present, so the description carries the burden of behavioral disclosure. It implies a read operation (returning a count) but does not explicitly state that it is non-destructive or safe. The description is minimal, but the operation's nature is reasonably inferred.

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 sentence with no redundant words. It is front-loaded and maximally concise, conveying the essential information in minimal space.

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 parameterless tool, the description is adequate. It specifies the output (number of mixer tracks inclusive of master). However, it lacks any mention of return format or type, and there is no output schema to supplement. Given the simplicity, it is mostly complete.

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 parameters, so schema coverage is trivially 100%. With no parameters, the description cannot add meaning beyond the schema; baseline 4 applies as the description adequately conveys the tool's function without needing parameter details.

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 what the tool does: returns the number of mixer tracks, explicitly including the master track at index 0. This distinguishes it from sibling tools like mixer_all_tracks (which lists tracks) and other mixer utilities. The verb is implied (returns) and the resource is specific.

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 such as mixer_all_tracks, mixer_track_info, or other mixer queries. For a simple count, context is minimal, but explicit usage conditions or exclusions are absent.

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