mixer_arm

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

With no annotations, the description carries the full burden of behavioral disclosure. It implies a state change but does not explain whether the tool toggles arming, what `armed: null` means, whether repeated calls have side effects, or whether recording must be stopped. This is a significant transparency gap for a state-mutating 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 short and front-loaded with no wasted words. However, it is under-specification rather than purposeful conciseness, omitting crucial operational details that are necessary for correct invocation.

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 tool has only two parameters, but the description does not cover their meaning or default behavior, there is no output schema, and there are no annotations. An agent cannot determine how to specify a track index or what the armed parameter does, so the description is incomplete for safe and correct use.

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 description coverage is 0%, and the description does not explain either parameter. `track` is just an integer with no indexing semantics, and `armed` is a boolean/null with no explanation of how it relates to arming. The description adds no value beyond the bare parameter names.

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 'Arm track for recording' clearly states the verb (arm), resource (track), and purpose (recording). This is specific and intelligible, though it does not explicitly distinguish itself from sibling tools like transport_record, so it misses the top score for differentiation.

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, nor on how the `armed` parameter should be set (true, false, or null). The description offers no context for selection or invocation, leaving the agent without direction.

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