voice_play_latest

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

No annotations are provided, so the description carries the full burden. It discloses that playback targets the single most recent summary (a useful determinism cue), but says nothing about whether playback is blocking, whether it interrupts an in-progress voice_speak/playback, or what happens when the inbox is empty. The presence of an output schema absorbs part of the disclosure burden.

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?

A single front-loaded sentence with zero filler; the selector ('most recent') and the source ('voice inbox') arrive immediately in one read.

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?

With no parameters and an output schema covering return values, the description is close to sufficient. What is missing is playback-state context that matters for a voice tool: blocking vs async behavior, interaction with voice_stop or concurrent speech, and empty-inbox behavior.

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. There is nothing parameter-level for the description to compensate for, and it correctly implies no inputs are needed.

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?

Specific verb+resource: 'plays the most recent speech summary' names exactly what is acted on and what happens. It is distinguishable from voice_speak (generates speech) and voice_stop/voice_status, though the play-vs-speak boundary is left implicit rather than stated.

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?

Usage is implied by the resource it acts on ('stored in the voice inbox'), but there is no explicit statement of when to call this instead of voice_speak or voice_status, and no mention of preconditions such as an empty inbox.

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