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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is fully covered by structured data. The description adds content scope (steps, world pace, links) but no behavior beyond that, such as caching, freshness, or size of the guide, so it earns a moderate score.

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 that front-loads the purpose and packs the content scope and language options without any filler. Nothing is redundant with the name or schema.

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?

An output schema exists, so return values need not be explained, and the single optional parameter is covered. The description sufficiently characterizes what the agent will get, though it could note the guide is static content rather than live game data.

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?

Schema description coverage is 0%, but there is only one parameter and its enum already constrains it to en/ru. The description compensates by stating 'English or Russian', clarifying that the lang value selects the output language of the guide, adding meaning the bare enum does not convey.

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 states a specific verb+resource: it delivers the onboarding steps for the game Jetopolis, plus world pace and links. This is clearly distinct from the data-lookup siblings (aircraft_catalog, world_standings), but it never explicitly names or contrasts them, so it stops short of full sibling differentiation.

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?

'How to start playing' implies the audience (new players needing an intro) but there is no explicit when-to-use statement, no when-not-to-use, and no named alternative among the sibling tools. Usage is inferable from the name and description rather than spelled out.

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