Start voice mode

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

With no annotations, the description carries the full burden and does add genuine context: it is a UI overlay, the user drives it via Option+Space, and output surfaces as a bubble near the pointer. However it omits the single most important behavioral fact for an agent — whether this call returns immediately or blocks awaiting the spoken question and answer — and says nothing about how to terminate voice mode.

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?

One sentence, front-loaded with the action, with no redundant or filler content. Every clause conveys distinct information about what launching the overlay means in practice.

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 zero-parameter tool with no output schema and no annotations, the description covers purpose and interaction flow adequately. The remaining gap is the synchronous/asynchronous behavior of the call, which an agent would need in order to sequence it correctly.

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 tool takes zero parameters, so there is nothing for the description to disambiguate; the baseline of 4 applies.

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 ('Launch') and resource ('the voice overlay for this project') and describes the resulting interaction model. It is unmistakably distinct from every sibling tool, all of which are browser/window/screenshot operations.

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 implies usage by explaining the voice interaction flow, but never states when an agent should choose this tool versus alternatives, nor any preconditions (e.g., whether voice mode must be enabled first or whether an overlay is already running).

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