mixer_group_create

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

With no annotations, the description must disclose behavioral traits, but it only mentions the default routing to Master and the optional output_target format. It does not describe side effects, return values, prerequisites, or any failure modes. For a creation tool, this is insufficient transparency regarding what actually happens when the group is created.

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 very brief and front-loaded with the main purpose. It uses a clear two-sentence structure plus a simple Args block, with no unnecessary fluff. It loses a point for not using a more structured format (e.g., bullet points) but is otherwise concise.

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 create tool with two parameters, the description covers the essential purpose and parameter formats. However, it leaves out important context such as what the response looks like (even though no output schema), potential errors (e.g., duplicate names), and whether additional configuration is needed. Given the lack of annotations and output schema, this is adequate but not comprehensive.

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 minimal value beyond the schema. 'name: Group name.' is essentially a repeat of the schema's 'Name'. For output_target, it does add 'Optional output bus/group path or {guid}', which provides some format context, but it does not explain how to specify a path, what {guid} refers to, or what the default behavior is beyond 'Master'. The schema coverage is 0%, so the description does not compensate for the lack of parameter detail.

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 a mixer group'. It specifies the resource (mixer group) and includes a key behavioral default ('routed to Master by default'). This distinguishes it from sibling tools like mixer_group_rename or mixer_group_delete, making its purpose 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?

The description does not provide any guidance on when to use this tool versus alternatives. It does not mention scenarios where mixer groups are appropriate or when to consider other group types (e.g., VCA groups). The only hint is the default routing, but no explicit when-to-use or when-not-to-use instructions are given.

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