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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds value beyond that by disclosing exactly what information comes back (visibility, avatar, audio source, sensitivity), which matters since there is no output schema. It does not say what happens when no player is connected, which is the main remaining gap.

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 sentence, front-loaded with the verb and resource, followed by a colon-separated enumeration of returned fields. No filler, no redundancy, and every clause 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?

For a zero-parameter read-only tool with no output schema, the description is nearly sufficient: it tells the agent what state is retrieved and implies a safe read. Only the no-player-connected behavior and the shape of the return are left unstated, which are minor omissions at this complexity.

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 no parameters, so there is nothing for the description to disambiguate; baseline 4 applies. The description correctly implies a zero-argument, ambient-state read rather than suggesting any input is 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?

The description pairs a specific verb ("Report") with a specific resource (the connected Ania Player's state) and enumerates the fields reported: visibility, loaded avatar, audio source, sensitivity. This clearly separates it from status siblings like creation_status and wake_word_status, which concern different resources, though it never names them.

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?

There is no explicit statement of when to call this versus alternatives, no prerequisites (e.g., a player must be connected), and no conditions under which it should not be used. The use case is inferable from the purpose statement alone, but no guidance is offered.

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