toggle_gamemode

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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the fact that this mutates system state is covered. The description adds which subsystems are affected (animations, blur, other effects), which is genuine value. However, it describes only the enabling direction of a toggle, never clarifying that a second call flips the effects back on, and 'other effects' leaves the blast radius undefined.

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 front-loaded sentence with the verb-resource pair first and the effect list second; nothing is padded. Minor deduction because 'and other effects' is vague filler that could have been replaced with a concrete statement about reversibility.

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, no output schema and non-destructive annotations already present, the minimum coverage is met. Still missing is what the agent needs to wield a state-flipping tool confidently: whether the call returns the new state and that get_gamemode_status exists to check it beforehand.

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, which is the baseline-4 case: there is nothing for the description to disambiguate in the schema. No param semantics are missing because none exist.

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 (toggle) and resource (gamemode) and defines what gamemode concretely means: 'disables animations, blur, and other effects for performance.' That goes beyond restating the name. It does not distinguish itself from the close sibling toggle_animations, which changes a subset of the same effects, nor does it mention get_gamemode_status for checking the current state.

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?

'for performance' implies the reason to use it, so usage is inferable but never stated. There is no explicit when-to-use guidance, no mention of the alternative of checking state first via get_gamemode_status, and no note on which effects are restored when toggled back.

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