Start voice mode

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

With no annotations, the description carries the full behavioral burden. It does disclose useful runtime behavior: an overlay appears, the answer renders in a bubble above the mouse pointer, and there is a screenshot variant of the shortcut. However, it omits whether the call blocks while the user speaks, whether microphone/accessibility permissions are required, and how voice mode is exited — gaps that matter to an agent deciding to invoke it.

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 verb and resource before the colon, with the interaction detail following. Tight overall, though the parenthetical about Option+Command with a screenshot adds detail of marginal value to an agent's decision to call the tool.

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 mode launcher with no output schema or annotations, the description covers what the tool is and what the user experiences. It is nearly complete; only the blocking/permission semantics and the absence of a return-value expectation keep it from being fully sufficient.

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 the baseline is 4. The description correctly adds nothing about inputs because there are none, and the keyboard-shortcut detail is a user-side interaction rather than a parameter.

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 concrete verb and resource: 'Launch the voice overlay for this project'. No sibling is explicitly named as an alternative, but no other sibling offers a voice mode, so the purpose is unambiguous. Not a 5 because it never contrasts itself with adjacent tools like 'announce' or 'look'.

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 conveys the user-driven interaction model (user holds Option and speaks), which implies when the tool is relevant, but it never states when to call it versus alternatives or what preconditions must hold. Usage is inferable rather than prescribed.

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