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

Annotations already supply idempotentHint=true and destructiveHint=false, so the core safety profile is covered. The description adds the meaningful scope 'for all connected clients,' but it does not describe what happens if the game is already running or any client-visible effects beyond resuming.

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 conveys the action, the target resource, and the scope without wasted words. The parenthetical 'unpause' usefully reinforces the verb without adding bulk.

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, side-effect-reaching command, the description is complete: it states exactly what happens and who is affected. The no-output-schema case does not create a gap because the return value is unlikely to be central for this simple control action.

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 input schema has zero parameters, so there are no parameter semantics for the description to clarify. Baseline 4 is appropriate because no parameter documentation burden exists.

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 uses a specific verb ('Resume (unpause)') and names the exact resource ('the game') affected. It also clarifies scope ('for all connected clients'), making it immediately distinguishable from the sibling game-pause and game-pause-get tools.

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 explains what the tool does but gives no explicit guidance on when to invoke it or when to choose an alternative. It does not mention preconditions such as the game being paused, nor does it point to game-pause or game-pause-get as related tools.

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