get_mixer

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds useful return-shape context (specific fields returned, '-inf' meaning silence) but doesn't describe pagination, scope limits, or error behavior.

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?

Front-loads the core scope (mixer state of all tracks in one call) and then enumerates returned fields. Dense but focused. Slightly overloaded by the field list and minor formatting oddities, but every sentence carries information.

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?

No output schema exists, so the description must describe the return value, which it does thoroughly (fields, units, -inf semantics, master-specific additions). Missing only details on the tracks filter semantics and any edge cases for an agent calling it with a subset.

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% for the single tracks parameter, so the description must compensate. It mentions 'only tracks' implying a subset filter, but doesn't clarify accepted identifier formats (integer vs string) or scope. Adds marginal value over the bare schema.

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?

States a specific verb+resource: reading mixer state for regular, return, and master tracks. Clearly distinguishable from set_mixer (its write counterpart) and get_meters. Not explicitly differentiated from siblings in text, but the mixer-state reading purpose is unambiguous.

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?

Implies a use case (retrieve all mixer state in one call) and notes the optional tracks filter. No explicit when-to-use vs alternatives guidance, e.g. no routing to get_meters for metering or to get_track for per-track detail. Adequate but with clear gaps.

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