get_gamemode_status

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered without the description. 'Currently active' adds the notion of live state rather than a persisted setting, which is mildly useful, but nothing about what 'active' means operationally (e.g. whether it requires a session, daemon, or can fail).

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 no filler; the parenthetical disambiguation earns its place. It is arguably under-sized given that it omits the return value, but it is not padded or bloated.

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?

There is no output schema, so the description is the only place the return value could be described, and it does not say that a boolean active/inactive state is returned or what happens if gamemode is unavailable. For a no-parameter status query with annotations covering safety, this leaves one meaningful gap.

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 of 4 applies. The description correctly adds no parameter prose, since there is nothing to document.

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 ('Check') and resource ('gamemode'), and clarifies with the parenthetical '(performance mode)' that gamemode is a performance setting rather than a media or gaming mode. It does not distinguish itself from the sibling toggle_gamemode, which is the obvious confusion risk.

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?

No guidance on when to call this versus toggle_gamemode or when the check is warranted. The read-only nature is implied by 'Check', but there is no explicit statement that this must be called before toggling, or that it is a query-only sibling of the toggle.

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