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

Annotations already flag destructiveHint=true and readOnlyHint=false, so the safety profile is covered; the description's job is to say what gets destroyed, and it does not. The schema's nested description explains that dialogue_styles replaces the entire list, but the tool description never warns that omitting entries silently deletes them, which is the single most consequential behavior here.

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 sentence with the ID scoping and the most complex field front-loaded; nothing is padded or repeated from the name. It is efficient, though its brevity is achieved by omission rather than by tight editing.

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?

This is a nested-object mutation with a 50-item array replacement, no output schema, and only coarse annotations, so the description carries a heavy load and delivers very little. An agent would only learn that replacement is destructive and that a prior get_game read is advisable by reading the schema, not the definition.

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 reported as 0% at the top level, but the nested dialogue_styles field does carry a substantive description and the schema enforces enums, required sub-fields, and additionalProperties=false. The tool description adds only a pointer to dialogue_styles and the ID scoping; it says nothing about which of the many updateable fields (name, github_url, environment_id, levels_menu_type, logo_static_image_id) exist or what 'editable' excludes.

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 and resource ('Update editable game details by ID') and names one of the updateable surfaces ('dialogue styles used by scene dialogue'). Combined with the game ID requirement, an agent can distinguish it from update_scene, update_style, and the other update_* siblings without opening the schema.

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 when-to-use guidance, no prerequisites, and no alternatives are named. The agent gets no signal that create_game is for new games or that get_game must be read first to obtain the current dialogue_styles list, even though that read-before-write step is effectively required by the list-replacement semantics.

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